YJ Axle Shift Motor
01-01-2004, 10:18 AM
#31
Guest
Posts: n/a
Re: YJ Axle Shift Motor
You didn't say what year or model, there are some differences.
Pressure switch on the firewall sorta indicates '87 to '90 YJ
Wrangler.
First off, don't worry about the front axle being continuouisly
engaged, all of the TJ's ('97 and later) run that way all the time.
The shift motor is vac pulled each way, in and out. The 4wd
pressure switch and the 4wd light are quite reliable, if the
light works and responds, things are usually all right in the
axle. In fact, the light will not go out until the axle disengages.
The really shaky part of all this is the vac lines and the switch
on the transfer case. ($35 and $15 respectively)
So if all that works, I have to ask what makes you think it is
locked in 4wd? The only thing that can be broken and give you
this particular set of symptoms is the shift fork inside the
shift motor. 4 bolts and you can inspect it.
Jeepster_2 wrote:
> I was posting as Jeepers and just realized that someone else posts
> here using the same name ( or someone else use to use that name) so
> you will notice I changed my nick a bit.
>
> Anyways 2 days ago I had my vehicle in 4WD and today I went to work
> and noticed that the front axles are locked in 4wd. The indicator
> light does not indicate that I'm in 4WD and responds to me shifting in
> and out of 4WD. From what I have read when I shift to 4WD the transfer
> case of course shifts the gears and via vacuum it trips a pressure
> switch to energize the indicator light.....this all seems to be in
> order. Also I understand it also applys or removes vacuum on the axle
> shift motor and engages / disengages the front axles.
>
> So from this I guess I can assume one of the following:
>
> 1:) I have a bad vacuum line
> 2:) The shift motor diaphram is damaged
> 3:) The shift linkage from the shift motor is damaged / jammed
>
> Is there an easy way to manually disengage this until I get time after
> NewYears to really look at the problem.
>
> Also does it apply vacuum to engage the front axles or remove vacuum?
>
>
Pressure switch on the firewall sorta indicates '87 to '90 YJ
Wrangler.
First off, don't worry about the front axle being continuouisly
engaged, all of the TJ's ('97 and later) run that way all the time.
The shift motor is vac pulled each way, in and out. The 4wd
pressure switch and the 4wd light are quite reliable, if the
light works and responds, things are usually all right in the
axle. In fact, the light will not go out until the axle disengages.
The really shaky part of all this is the vac lines and the switch
on the transfer case. ($35 and $15 respectively)
So if all that works, I have to ask what makes you think it is
locked in 4wd? The only thing that can be broken and give you
this particular set of symptoms is the shift fork inside the
shift motor. 4 bolts and you can inspect it.
Jeepster_2 wrote:
> I was posting as Jeepers and just realized that someone else posts
> here using the same name ( or someone else use to use that name) so
> you will notice I changed my nick a bit.
>
> Anyways 2 days ago I had my vehicle in 4WD and today I went to work
> and noticed that the front axles are locked in 4wd. The indicator
> light does not indicate that I'm in 4WD and responds to me shifting in
> and out of 4WD. From what I have read when I shift to 4WD the transfer
> case of course shifts the gears and via vacuum it trips a pressure
> switch to energize the indicator light.....this all seems to be in
> order. Also I understand it also applys or removes vacuum on the axle
> shift motor and engages / disengages the front axles.
>
> So from this I guess I can assume one of the following:
>
> 1:) I have a bad vacuum line
> 2:) The shift motor diaphram is damaged
> 3:) The shift linkage from the shift motor is damaged / jammed
>
> Is there an easy way to manually disengage this until I get time after
> NewYears to really look at the problem.
>
> Also does it apply vacuum to engage the front axles or remove vacuum?
>
>
01-01-2004, 02:36 PM
#32
Guest
Posts: n/a
Re: YJ Axle Shift Motor
87 YJ Laredo / 258 cu
It seems to have a bit of bump steer ..... not real bad but none the
less there is a bit of a bump in the steering wheel when I turn
corners. I have inspected the vac lines and they "appear" ok but I
suspect that maybe it was caused by a 1" body lift that I did , but
then again I did notice it just before I did the lift. I plan today to
pull the cover and cycle it in and out of 4WD and watch the fork it
might be sticking, I also have a vac test guage and I plan to check
the vac signal to each side of the diaphram.
On Thu, 01 Jan 2004 09:18:33 -0600, Roy J <spamless@microsoft.net>
wrote:
>You didn't say what year or model, there are some differences.
>Pressure switch on the firewall sorta indicates '87 to '90 YJ
>Wrangler.
>
>First off, don't worry about the front axle being continuouisly
>engaged, all of the TJ's ('97 and later) run that way all the time.
>
>The shift motor is vac pulled each way, in and out. The 4wd
>pressure switch and the 4wd light are quite reliable, if the
>light works and responds, things are usually all right in the
>axle. In fact, the light will not go out until the axle disengages.
>
>The really shaky part of all this is the vac lines and the switch
>on the transfer case. ($35 and $15 respectively)
>
>So if all that works, I have to ask what makes you think it is
>locked in 4wd? The only thing that can be broken and give you
>this particular set of symptoms is the shift fork inside the
>shift motor. 4 bolts and you can inspect it.
>
>Jeepster_2 wrote:
>
>> I was posting as Jeepers and just realized that someone else posts
>> here using the same name ( or someone else use to use that name) so
>> you will notice I changed my nick a bit.
>>
>> Anyways 2 days ago I had my vehicle in 4WD and today I went to work
>> and noticed that the front axles are locked in 4wd. The indicator
>> light does not indicate that I'm in 4WD and responds to me shifting in
>> and out of 4WD. From what I have read when I shift to 4WD the transfer
>> case of course shifts the gears and via vacuum it trips a pressure
>> switch to energize the indicator light.....this all seems to be in
>> order. Also I understand it also applys or removes vacuum on the axle
>> shift motor and engages / disengages the front axles.
>>
>> So from this I guess I can assume one of the following:
>>
>> 1:) I have a bad vacuum line
>> 2:) The shift motor diaphram is damaged
>> 3:) The shift linkage from the shift motor is damaged / jammed
>>
>> Is there an easy way to manually disengage this until I get time after
>> NewYears to really look at the problem.
>>
>> Also does it apply vacuum to engage the front axles or remove vacuum?
>>
>>
It seems to have a bit of bump steer ..... not real bad but none the
less there is a bit of a bump in the steering wheel when I turn
corners. I have inspected the vac lines and they "appear" ok but I
suspect that maybe it was caused by a 1" body lift that I did , but
then again I did notice it just before I did the lift. I plan today to
pull the cover and cycle it in and out of 4WD and watch the fork it
might be sticking, I also have a vac test guage and I plan to check
the vac signal to each side of the diaphram.
On Thu, 01 Jan 2004 09:18:33 -0600, Roy J <spamless@microsoft.net>
wrote:
>You didn't say what year or model, there are some differences.
>Pressure switch on the firewall sorta indicates '87 to '90 YJ
>Wrangler.
>
>First off, don't worry about the front axle being continuouisly
>engaged, all of the TJ's ('97 and later) run that way all the time.
>
>The shift motor is vac pulled each way, in and out. The 4wd
>pressure switch and the 4wd light are quite reliable, if the
>light works and responds, things are usually all right in the
>axle. In fact, the light will not go out until the axle disengages.
>
>The really shaky part of all this is the vac lines and the switch
>on the transfer case. ($35 and $15 respectively)
>
>So if all that works, I have to ask what makes you think it is
>locked in 4wd? The only thing that can be broken and give you
>this particular set of symptoms is the shift fork inside the
>shift motor. 4 bolts and you can inspect it.
>
>Jeepster_2 wrote:
>
>> I was posting as Jeepers and just realized that someone else posts
>> here using the same name ( or someone else use to use that name) so
>> you will notice I changed my nick a bit.
>>
>> Anyways 2 days ago I had my vehicle in 4WD and today I went to work
>> and noticed that the front axles are locked in 4wd. The indicator
>> light does not indicate that I'm in 4WD and responds to me shifting in
>> and out of 4WD. From what I have read when I shift to 4WD the transfer
>> case of course shifts the gears and via vacuum it trips a pressure
>> switch to energize the indicator light.....this all seems to be in
>> order. Also I understand it also applys or removes vacuum on the axle
>> shift motor and engages / disengages the front axles.
>>
>> So from this I guess I can assume one of the following:
>>
>> 1:) I have a bad vacuum line
>> 2:) The shift motor diaphram is damaged
>> 3:) The shift linkage from the shift motor is damaged / jammed
>>
>> Is there an easy way to manually disengage this until I get time after
>> NewYears to really look at the problem.
>>
>> Also does it apply vacuum to engage the front axles or remove vacuum?
>>
>>
01-01-2004, 02:36 PM
#33
Guest
Posts: n/a
Re: YJ Axle Shift Motor
87 YJ Laredo / 258 cu
It seems to have a bit of bump steer ..... not real bad but none the
less there is a bit of a bump in the steering wheel when I turn
corners. I have inspected the vac lines and they "appear" ok but I
suspect that maybe it was caused by a 1" body lift that I did , but
then again I did notice it just before I did the lift. I plan today to
pull the cover and cycle it in and out of 4WD and watch the fork it
might be sticking, I also have a vac test guage and I plan to check
the vac signal to each side of the diaphram.
On Thu, 01 Jan 2004 09:18:33 -0600, Roy J <spamless@microsoft.net>
wrote:
>You didn't say what year or model, there are some differences.
>Pressure switch on the firewall sorta indicates '87 to '90 YJ
>Wrangler.
>
>First off, don't worry about the front axle being continuouisly
>engaged, all of the TJ's ('97 and later) run that way all the time.
>
>The shift motor is vac pulled each way, in and out. The 4wd
>pressure switch and the 4wd light are quite reliable, if the
>light works and responds, things are usually all right in the
>axle. In fact, the light will not go out until the axle disengages.
>
>The really shaky part of all this is the vac lines and the switch
>on the transfer case. ($35 and $15 respectively)
>
>So if all that works, I have to ask what makes you think it is
>locked in 4wd? The only thing that can be broken and give you
>this particular set of symptoms is the shift fork inside the
>shift motor. 4 bolts and you can inspect it.
>
>Jeepster_2 wrote:
>
>> I was posting as Jeepers and just realized that someone else posts
>> here using the same name ( or someone else use to use that name) so
>> you will notice I changed my nick a bit.
>>
>> Anyways 2 days ago I had my vehicle in 4WD and today I went to work
>> and noticed that the front axles are locked in 4wd. The indicator
>> light does not indicate that I'm in 4WD and responds to me shifting in
>> and out of 4WD. From what I have read when I shift to 4WD the transfer
>> case of course shifts the gears and via vacuum it trips a pressure
>> switch to energize the indicator light.....this all seems to be in
>> order. Also I understand it also applys or removes vacuum on the axle
>> shift motor and engages / disengages the front axles.
>>
>> So from this I guess I can assume one of the following:
>>
>> 1:) I have a bad vacuum line
>> 2:) The shift motor diaphram is damaged
>> 3:) The shift linkage from the shift motor is damaged / jammed
>>
>> Is there an easy way to manually disengage this until I get time after
>> NewYears to really look at the problem.
>>
>> Also does it apply vacuum to engage the front axles or remove vacuum?
>>
>>
It seems to have a bit of bump steer ..... not real bad but none the
less there is a bit of a bump in the steering wheel when I turn
corners. I have inspected the vac lines and they "appear" ok but I
suspect that maybe it was caused by a 1" body lift that I did , but
then again I did notice it just before I did the lift. I plan today to
pull the cover and cycle it in and out of 4WD and watch the fork it
might be sticking, I also have a vac test guage and I plan to check
the vac signal to each side of the diaphram.
On Thu, 01 Jan 2004 09:18:33 -0600, Roy J <spamless@microsoft.net>
wrote:
>You didn't say what year or model, there are some differences.
>Pressure switch on the firewall sorta indicates '87 to '90 YJ
>Wrangler.
>
>First off, don't worry about the front axle being continuouisly
>engaged, all of the TJ's ('97 and later) run that way all the time.
>
>The shift motor is vac pulled each way, in and out. The 4wd
>pressure switch and the 4wd light are quite reliable, if the
>light works and responds, things are usually all right in the
>axle. In fact, the light will not go out until the axle disengages.
>
>The really shaky part of all this is the vac lines and the switch
>on the transfer case. ($35 and $15 respectively)
>
>So if all that works, I have to ask what makes you think it is
>locked in 4wd? The only thing that can be broken and give you
>this particular set of symptoms is the shift fork inside the
>shift motor. 4 bolts and you can inspect it.
>
>Jeepster_2 wrote:
>
>> I was posting as Jeepers and just realized that someone else posts
>> here using the same name ( or someone else use to use that name) so
>> you will notice I changed my nick a bit.
>>
>> Anyways 2 days ago I had my vehicle in 4WD and today I went to work
>> and noticed that the front axles are locked in 4wd. The indicator
>> light does not indicate that I'm in 4WD and responds to me shifting in
>> and out of 4WD. From what I have read when I shift to 4WD the transfer
>> case of course shifts the gears and via vacuum it trips a pressure
>> switch to energize the indicator light.....this all seems to be in
>> order. Also I understand it also applys or removes vacuum on the axle
>> shift motor and engages / disengages the front axles.
>>
>> So from this I guess I can assume one of the following:
>>
>> 1:) I have a bad vacuum line
>> 2:) The shift motor diaphram is damaged
>> 3:) The shift linkage from the shift motor is damaged / jammed
>>
>> Is there an easy way to manually disengage this until I get time after
>> NewYears to really look at the problem.
>>
>> Also does it apply vacuum to engage the front axles or remove vacuum?
>>
>>
01-01-2004, 02:36 PM
#34
Guest
Posts: n/a
Re: YJ Axle Shift Motor
87 YJ Laredo / 258 cu
It seems to have a bit of bump steer ..... not real bad but none the
less there is a bit of a bump in the steering wheel when I turn
corners. I have inspected the vac lines and they "appear" ok but I
suspect that maybe it was caused by a 1" body lift that I did , but
then again I did notice it just before I did the lift. I plan today to
pull the cover and cycle it in and out of 4WD and watch the fork it
might be sticking, I also have a vac test guage and I plan to check
the vac signal to each side of the diaphram.
On Thu, 01 Jan 2004 09:18:33 -0600, Roy J <spamless@microsoft.net>
wrote:
>You didn't say what year or model, there are some differences.
>Pressure switch on the firewall sorta indicates '87 to '90 YJ
>Wrangler.
>
>First off, don't worry about the front axle being continuouisly
>engaged, all of the TJ's ('97 and later) run that way all the time.
>
>The shift motor is vac pulled each way, in and out. The 4wd
>pressure switch and the 4wd light are quite reliable, if the
>light works and responds, things are usually all right in the
>axle. In fact, the light will not go out until the axle disengages.
>
>The really shaky part of all this is the vac lines and the switch
>on the transfer case. ($35 and $15 respectively)
>
>So if all that works, I have to ask what makes you think it is
>locked in 4wd? The only thing that can be broken and give you
>this particular set of symptoms is the shift fork inside the
>shift motor. 4 bolts and you can inspect it.
>
>Jeepster_2 wrote:
>
>> I was posting as Jeepers and just realized that someone else posts
>> here using the same name ( or someone else use to use that name) so
>> you will notice I changed my nick a bit.
>>
>> Anyways 2 days ago I had my vehicle in 4WD and today I went to work
>> and noticed that the front axles are locked in 4wd. The indicator
>> light does not indicate that I'm in 4WD and responds to me shifting in
>> and out of 4WD. From what I have read when I shift to 4WD the transfer
>> case of course shifts the gears and via vacuum it trips a pressure
>> switch to energize the indicator light.....this all seems to be in
>> order. Also I understand it also applys or removes vacuum on the axle
>> shift motor and engages / disengages the front axles.
>>
>> So from this I guess I can assume one of the following:
>>
>> 1:) I have a bad vacuum line
>> 2:) The shift motor diaphram is damaged
>> 3:) The shift linkage from the shift motor is damaged / jammed
>>
>> Is there an easy way to manually disengage this until I get time after
>> NewYears to really look at the problem.
>>
>> Also does it apply vacuum to engage the front axles or remove vacuum?
>>
>>
It seems to have a bit of bump steer ..... not real bad but none the
less there is a bit of a bump in the steering wheel when I turn
corners. I have inspected the vac lines and they "appear" ok but I
suspect that maybe it was caused by a 1" body lift that I did , but
then again I did notice it just before I did the lift. I plan today to
pull the cover and cycle it in and out of 4WD and watch the fork it
might be sticking, I also have a vac test guage and I plan to check
the vac signal to each side of the diaphram.
On Thu, 01 Jan 2004 09:18:33 -0600, Roy J <spamless@microsoft.net>
wrote:
>You didn't say what year or model, there are some differences.
>Pressure switch on the firewall sorta indicates '87 to '90 YJ
>Wrangler.
>
>First off, don't worry about the front axle being continuouisly
>engaged, all of the TJ's ('97 and later) run that way all the time.
>
>The shift motor is vac pulled each way, in and out. The 4wd
>pressure switch and the 4wd light are quite reliable, if the
>light works and responds, things are usually all right in the
>axle. In fact, the light will not go out until the axle disengages.
>
>The really shaky part of all this is the vac lines and the switch
>on the transfer case. ($35 and $15 respectively)
>
>So if all that works, I have to ask what makes you think it is
>locked in 4wd? The only thing that can be broken and give you
>this particular set of symptoms is the shift fork inside the
>shift motor. 4 bolts and you can inspect it.
>
>Jeepster_2 wrote:
>
>> I was posting as Jeepers and just realized that someone else posts
>> here using the same name ( or someone else use to use that name) so
>> you will notice I changed my nick a bit.
>>
>> Anyways 2 days ago I had my vehicle in 4WD and today I went to work
>> and noticed that the front axles are locked in 4wd. The indicator
>> light does not indicate that I'm in 4WD and responds to me shifting in
>> and out of 4WD. From what I have read when I shift to 4WD the transfer
>> case of course shifts the gears and via vacuum it trips a pressure
>> switch to energize the indicator light.....this all seems to be in
>> order. Also I understand it also applys or removes vacuum on the axle
>> shift motor and engages / disengages the front axles.
>>
>> So from this I guess I can assume one of the following:
>>
>> 1:) I have a bad vacuum line
>> 2:) The shift motor diaphram is damaged
>> 3:) The shift linkage from the shift motor is damaged / jammed
>>
>> Is there an easy way to manually disengage this until I get time after
>> NewYears to really look at the problem.
>>
>> Also does it apply vacuum to engage the front axles or remove vacuum?
>>
>>
01-01-2004, 03:22 PM
#35
Guest
Posts: n/a
Re: YJ Axle Shift Motor
What size suspension lift do you have, if you have one, and do you have the
factory Pitman steering arm or a dropped Pitman arm?
Jerry
--
Jerry Bransford
To email, remove 'me' from my email address
KC6TAY, PP-ASEL
See the Geezer Jeep at
http://members.***.net/jerrypb/
"Jeepster" <yj_driver_NO_SPAM@excite.com> wrote in message
news:8dt8vv426fjktfmktstat10af9c82t1s2n@4ax.com...
> 87 YJ Laredo / 258 cu
>
> It seems to have a bit of bump steer ..... not real bad but none the
> less there is a bit of a bump in the steering wheel when I turn
> corners. I have inspected the vac lines and they "appear" ok but I
> suspect that maybe it was caused by a 1" body lift that I did , but
> then again I did notice it just before I did the lift. I plan today to
> pull the cover and cycle it in and out of 4WD and watch the fork it
> might be sticking, I also have a vac test guage and I plan to check
> the vac signal to each side of the diaphram.
>
> On Thu, 01 Jan 2004 09:18:33 -0600, Roy J <spamless@microsoft.net>
> wrote:
>
> >You didn't say what year or model, there are some differences.
> >Pressure switch on the firewall sorta indicates '87 to '90 YJ
> >Wrangler.
> >
> >First off, don't worry about the front axle being continuouisly
> >engaged, all of the TJ's ('97 and later) run that way all the time.
> >
> >The shift motor is vac pulled each way, in and out. The 4wd
> >pressure switch and the 4wd light are quite reliable, if the
> >light works and responds, things are usually all right in the
> >axle. In fact, the light will not go out until the axle disengages.
> >
> >The really shaky part of all this is the vac lines and the switch
> >on the transfer case. ($35 and $15 respectively)
> >
> >So if all that works, I have to ask what makes you think it is
> >locked in 4wd? The only thing that can be broken and give you
> >this particular set of symptoms is the shift fork inside the
> >shift motor. 4 bolts and you can inspect it.
> >
> >Jeepster_2 wrote:
> >
> >> I was posting as Jeepers and just realized that someone else posts
> >> here using the same name ( or someone else use to use that name) so
> >> you will notice I changed my nick a bit.
> >>
> >> Anyways 2 days ago I had my vehicle in 4WD and today I went to work
> >> and noticed that the front axles are locked in 4wd. The indicator
> >> light does not indicate that I'm in 4WD and responds to me shifting in
> >> and out of 4WD. From what I have read when I shift to 4WD the transfer
> >> case of course shifts the gears and via vacuum it trips a pressure
> >> switch to energize the indicator light.....this all seems to be in
> >> order. Also I understand it also applys or removes vacuum on the axle
> >> shift motor and engages / disengages the front axles.
> >>
> >> So from this I guess I can assume one of the following:
> >>
> >> 1:) I have a bad vacuum line
> >> 2:) The shift motor diaphram is damaged
> >> 3:) The shift linkage from the shift motor is damaged / jammed
> >>
> >> Is there an easy way to manually disengage this until I get time after
> >> NewYears to really look at the problem.
> >>
> >> Also does it apply vacuum to engage the front axles or remove vacuum?
> >>
> >>
>
factory Pitman steering arm or a dropped Pitman arm?
Jerry
--
Jerry Bransford
To email, remove 'me' from my email address
KC6TAY, PP-ASEL
See the Geezer Jeep at
http://members.***.net/jerrypb/
"Jeepster" <yj_driver_NO_SPAM@excite.com> wrote in message
news:8dt8vv426fjktfmktstat10af9c82t1s2n@4ax.com...
> 87 YJ Laredo / 258 cu
>
> It seems to have a bit of bump steer ..... not real bad but none the
> less there is a bit of a bump in the steering wheel when I turn
> corners. I have inspected the vac lines and they "appear" ok but I
> suspect that maybe it was caused by a 1" body lift that I did , but
> then again I did notice it just before I did the lift. I plan today to
> pull the cover and cycle it in and out of 4WD and watch the fork it
> might be sticking, I also have a vac test guage and I plan to check
> the vac signal to each side of the diaphram.
>
> On Thu, 01 Jan 2004 09:18:33 -0600, Roy J <spamless@microsoft.net>
> wrote:
>
> >You didn't say what year or model, there are some differences.
> >Pressure switch on the firewall sorta indicates '87 to '90 YJ
> >Wrangler.
> >
> >First off, don't worry about the front axle being continuouisly
> >engaged, all of the TJ's ('97 and later) run that way all the time.
> >
> >The shift motor is vac pulled each way, in and out. The 4wd
> >pressure switch and the 4wd light are quite reliable, if the
> >light works and responds, things are usually all right in the
> >axle. In fact, the light will not go out until the axle disengages.
> >
> >The really shaky part of all this is the vac lines and the switch
> >on the transfer case. ($35 and $15 respectively)
> >
> >So if all that works, I have to ask what makes you think it is
> >locked in 4wd? The only thing that can be broken and give you
> >this particular set of symptoms is the shift fork inside the
> >shift motor. 4 bolts and you can inspect it.
> >
> >Jeepster_2 wrote:
> >
> >> I was posting as Jeepers and just realized that someone else posts
> >> here using the same name ( or someone else use to use that name) so
> >> you will notice I changed my nick a bit.
> >>
> >> Anyways 2 days ago I had my vehicle in 4WD and today I went to work
> >> and noticed that the front axles are locked in 4wd. The indicator
> >> light does not indicate that I'm in 4WD and responds to me shifting in
> >> and out of 4WD. From what I have read when I shift to 4WD the transfer
> >> case of course shifts the gears and via vacuum it trips a pressure
> >> switch to energize the indicator light.....this all seems to be in
> >> order. Also I understand it also applys or removes vacuum on the axle
> >> shift motor and engages / disengages the front axles.
> >>
> >> So from this I guess I can assume one of the following:
> >>
> >> 1:) I have a bad vacuum line
> >> 2:) The shift motor diaphram is damaged
> >> 3:) The shift linkage from the shift motor is damaged / jammed
> >>
> >> Is there an easy way to manually disengage this until I get time after
> >> NewYears to really look at the problem.
> >>
> >> Also does it apply vacuum to engage the front axles or remove vacuum?
> >>
> >>
>
01-01-2004, 03:22 PM
#36
Guest
Posts: n/a
Re: YJ Axle Shift Motor
What size suspension lift do you have, if you have one, and do you have the
factory Pitman steering arm or a dropped Pitman arm?
Jerry
--
Jerry Bransford
To email, remove 'me' from my email address
KC6TAY, PP-ASEL
See the Geezer Jeep at
http://members.***.net/jerrypb/
"Jeepster" <yj_driver_NO_SPAM@excite.com> wrote in message
news:8dt8vv426fjktfmktstat10af9c82t1s2n@4ax.com...
> 87 YJ Laredo / 258 cu
>
> It seems to have a bit of bump steer ..... not real bad but none the
> less there is a bit of a bump in the steering wheel when I turn
> corners. I have inspected the vac lines and they "appear" ok but I
> suspect that maybe it was caused by a 1" body lift that I did , but
> then again I did notice it just before I did the lift. I plan today to
> pull the cover and cycle it in and out of 4WD and watch the fork it
> might be sticking, I also have a vac test guage and I plan to check
> the vac signal to each side of the diaphram.
>
> On Thu, 01 Jan 2004 09:18:33 -0600, Roy J <spamless@microsoft.net>
> wrote:
>
> >You didn't say what year or model, there are some differences.
> >Pressure switch on the firewall sorta indicates '87 to '90 YJ
> >Wrangler.
> >
> >First off, don't worry about the front axle being continuouisly
> >engaged, all of the TJ's ('97 and later) run that way all the time.
> >
> >The shift motor is vac pulled each way, in and out. The 4wd
> >pressure switch and the 4wd light are quite reliable, if the
> >light works and responds, things are usually all right in the
> >axle. In fact, the light will not go out until the axle disengages.
> >
> >The really shaky part of all this is the vac lines and the switch
> >on the transfer case. ($35 and $15 respectively)
> >
> >So if all that works, I have to ask what makes you think it is
> >locked in 4wd? The only thing that can be broken and give you
> >this particular set of symptoms is the shift fork inside the
> >shift motor. 4 bolts and you can inspect it.
> >
> >Jeepster_2 wrote:
> >
> >> I was posting as Jeepers and just realized that someone else posts
> >> here using the same name ( or someone else use to use that name) so
> >> you will notice I changed my nick a bit.
> >>
> >> Anyways 2 days ago I had my vehicle in 4WD and today I went to work
> >> and noticed that the front axles are locked in 4wd. The indicator
> >> light does not indicate that I'm in 4WD and responds to me shifting in
> >> and out of 4WD. From what I have read when I shift to 4WD the transfer
> >> case of course shifts the gears and via vacuum it trips a pressure
> >> switch to energize the indicator light.....this all seems to be in
> >> order. Also I understand it also applys or removes vacuum on the axle
> >> shift motor and engages / disengages the front axles.
> >>
> >> So from this I guess I can assume one of the following:
> >>
> >> 1:) I have a bad vacuum line
> >> 2:) The shift motor diaphram is damaged
> >> 3:) The shift linkage from the shift motor is damaged / jammed
> >>
> >> Is there an easy way to manually disengage this until I get time after
> >> NewYears to really look at the problem.
> >>
> >> Also does it apply vacuum to engage the front axles or remove vacuum?
> >>
> >>
>
factory Pitman steering arm or a dropped Pitman arm?
Jerry
--
Jerry Bransford
To email, remove 'me' from my email address
KC6TAY, PP-ASEL
See the Geezer Jeep at
http://members.***.net/jerrypb/
"Jeepster" <yj_driver_NO_SPAM@excite.com> wrote in message
news:8dt8vv426fjktfmktstat10af9c82t1s2n@4ax.com...
> 87 YJ Laredo / 258 cu
>
> It seems to have a bit of bump steer ..... not real bad but none the
> less there is a bit of a bump in the steering wheel when I turn
> corners. I have inspected the vac lines and they "appear" ok but I
> suspect that maybe it was caused by a 1" body lift that I did , but
> then again I did notice it just before I did the lift. I plan today to
> pull the cover and cycle it in and out of 4WD and watch the fork it
> might be sticking, I also have a vac test guage and I plan to check
> the vac signal to each side of the diaphram.
>
> On Thu, 01 Jan 2004 09:18:33 -0600, Roy J <spamless@microsoft.net>
> wrote:
>
> >You didn't say what year or model, there are some differences.
> >Pressure switch on the firewall sorta indicates '87 to '90 YJ
> >Wrangler.
> >
> >First off, don't worry about the front axle being continuouisly
> >engaged, all of the TJ's ('97 and later) run that way all the time.
> >
> >The shift motor is vac pulled each way, in and out. The 4wd
> >pressure switch and the 4wd light are quite reliable, if the
> >light works and responds, things are usually all right in the
> >axle. In fact, the light will not go out until the axle disengages.
> >
> >The really shaky part of all this is the vac lines and the switch
> >on the transfer case. ($35 and $15 respectively)
> >
> >So if all that works, I have to ask what makes you think it is
> >locked in 4wd? The only thing that can be broken and give you
> >this particular set of symptoms is the shift fork inside the
> >shift motor. 4 bolts and you can inspect it.
> >
> >Jeepster_2 wrote:
> >
> >> I was posting as Jeepers and just realized that someone else posts
> >> here using the same name ( or someone else use to use that name) so
> >> you will notice I changed my nick a bit.
> >>
> >> Anyways 2 days ago I had my vehicle in 4WD and today I went to work
> >> and noticed that the front axles are locked in 4wd. The indicator
> >> light does not indicate that I'm in 4WD and responds to me shifting in
> >> and out of 4WD. From what I have read when I shift to 4WD the transfer
> >> case of course shifts the gears and via vacuum it trips a pressure
> >> switch to energize the indicator light.....this all seems to be in
> >> order. Also I understand it also applys or removes vacuum on the axle
> >> shift motor and engages / disengages the front axles.
> >>
> >> So from this I guess I can assume one of the following:
> >>
> >> 1:) I have a bad vacuum line
> >> 2:) The shift motor diaphram is damaged
> >> 3:) The shift linkage from the shift motor is damaged / jammed
> >>
> >> Is there an easy way to manually disengage this until I get time after
> >> NewYears to really look at the problem.
> >>
> >> Also does it apply vacuum to engage the front axles or remove vacuum?
> >>
> >>
>
01-01-2004, 03:22 PM
#37
Guest
Posts: n/a
Re: YJ Axle Shift Motor
What size suspension lift do you have, if you have one, and do you have the
factory Pitman steering arm or a dropped Pitman arm?
Jerry
--
Jerry Bransford
To email, remove 'me' from my email address
KC6TAY, PP-ASEL
See the Geezer Jeep at
http://members.***.net/jerrypb/
"Jeepster" <yj_driver_NO_SPAM@excite.com> wrote in message
news:8dt8vv426fjktfmktstat10af9c82t1s2n@4ax.com...
> 87 YJ Laredo / 258 cu
>
> It seems to have a bit of bump steer ..... not real bad but none the
> less there is a bit of a bump in the steering wheel when I turn
> corners. I have inspected the vac lines and they "appear" ok but I
> suspect that maybe it was caused by a 1" body lift that I did , but
> then again I did notice it just before I did the lift. I plan today to
> pull the cover and cycle it in and out of 4WD and watch the fork it
> might be sticking, I also have a vac test guage and I plan to check
> the vac signal to each side of the diaphram.
>
> On Thu, 01 Jan 2004 09:18:33 -0600, Roy J <spamless@microsoft.net>
> wrote:
>
> >You didn't say what year or model, there are some differences.
> >Pressure switch on the firewall sorta indicates '87 to '90 YJ
> >Wrangler.
> >
> >First off, don't worry about the front axle being continuouisly
> >engaged, all of the TJ's ('97 and later) run that way all the time.
> >
> >The shift motor is vac pulled each way, in and out. The 4wd
> >pressure switch and the 4wd light are quite reliable, if the
> >light works and responds, things are usually all right in the
> >axle. In fact, the light will not go out until the axle disengages.
> >
> >The really shaky part of all this is the vac lines and the switch
> >on the transfer case. ($35 and $15 respectively)
> >
> >So if all that works, I have to ask what makes you think it is
> >locked in 4wd? The only thing that can be broken and give you
> >this particular set of symptoms is the shift fork inside the
> >shift motor. 4 bolts and you can inspect it.
> >
> >Jeepster_2 wrote:
> >
> >> I was posting as Jeepers and just realized that someone else posts
> >> here using the same name ( or someone else use to use that name) so
> >> you will notice I changed my nick a bit.
> >>
> >> Anyways 2 days ago I had my vehicle in 4WD and today I went to work
> >> and noticed that the front axles are locked in 4wd. The indicator
> >> light does not indicate that I'm in 4WD and responds to me shifting in
> >> and out of 4WD. From what I have read when I shift to 4WD the transfer
> >> case of course shifts the gears and via vacuum it trips a pressure
> >> switch to energize the indicator light.....this all seems to be in
> >> order. Also I understand it also applys or removes vacuum on the axle
> >> shift motor and engages / disengages the front axles.
> >>
> >> So from this I guess I can assume one of the following:
> >>
> >> 1:) I have a bad vacuum line
> >> 2:) The shift motor diaphram is damaged
> >> 3:) The shift linkage from the shift motor is damaged / jammed
> >>
> >> Is there an easy way to manually disengage this until I get time after
> >> NewYears to really look at the problem.
> >>
> >> Also does it apply vacuum to engage the front axles or remove vacuum?
> >>
> >>
>
factory Pitman steering arm or a dropped Pitman arm?
Jerry
--
Jerry Bransford
To email, remove 'me' from my email address
KC6TAY, PP-ASEL
See the Geezer Jeep at
http://members.***.net/jerrypb/
"Jeepster" <yj_driver_NO_SPAM@excite.com> wrote in message
news:8dt8vv426fjktfmktstat10af9c82t1s2n@4ax.com...
> 87 YJ Laredo / 258 cu
>
> It seems to have a bit of bump steer ..... not real bad but none the
> less there is a bit of a bump in the steering wheel when I turn
> corners. I have inspected the vac lines and they "appear" ok but I
> suspect that maybe it was caused by a 1" body lift that I did , but
> then again I did notice it just before I did the lift. I plan today to
> pull the cover and cycle it in and out of 4WD and watch the fork it
> might be sticking, I also have a vac test guage and I plan to check
> the vac signal to each side of the diaphram.
>
> On Thu, 01 Jan 2004 09:18:33 -0600, Roy J <spamless@microsoft.net>
> wrote:
>
> >You didn't say what year or model, there are some differences.
> >Pressure switch on the firewall sorta indicates '87 to '90 YJ
> >Wrangler.
> >
> >First off, don't worry about the front axle being continuouisly
> >engaged, all of the TJ's ('97 and later) run that way all the time.
> >
> >The shift motor is vac pulled each way, in and out. The 4wd
> >pressure switch and the 4wd light are quite reliable, if the
> >light works and responds, things are usually all right in the
> >axle. In fact, the light will not go out until the axle disengages.
> >
> >The really shaky part of all this is the vac lines and the switch
> >on the transfer case. ($35 and $15 respectively)
> >
> >So if all that works, I have to ask what makes you think it is
> >locked in 4wd? The only thing that can be broken and give you
> >this particular set of symptoms is the shift fork inside the
> >shift motor. 4 bolts and you can inspect it.
> >
> >Jeepster_2 wrote:
> >
> >> I was posting as Jeepers and just realized that someone else posts
> >> here using the same name ( or someone else use to use that name) so
> >> you will notice I changed my nick a bit.
> >>
> >> Anyways 2 days ago I had my vehicle in 4WD and today I went to work
> >> and noticed that the front axles are locked in 4wd. The indicator
> >> light does not indicate that I'm in 4WD and responds to me shifting in
> >> and out of 4WD. From what I have read when I shift to 4WD the transfer
> >> case of course shifts the gears and via vacuum it trips a pressure
> >> switch to energize the indicator light.....this all seems to be in
> >> order. Also I understand it also applys or removes vacuum on the axle
> >> shift motor and engages / disengages the front axles.
> >>
> >> So from this I guess I can assume one of the following:
> >>
> >> 1:) I have a bad vacuum line
> >> 2:) The shift motor diaphram is damaged
> >> 3:) The shift linkage from the shift motor is damaged / jammed
> >>
> >> Is there an easy way to manually disengage this until I get time after
> >> NewYears to really look at the problem.
> >>
> >> Also does it apply vacuum to engage the front axles or remove vacuum?
> >>
> >>
>
01-01-2004, 03:53 PM
#38
Guest
Posts: n/a
Re: YJ Axle Shift Motor
Standard suspension with 300,000 km's on it.
On Thu, 1 Jan 2004 12:22:17 -0800, "Jerry Bransford"
<jerrypb@mecox.net> wrote:
>What size suspension lift do you have, if you have one, and do you have the
>factory Pitman steering arm or a dropped Pitman arm?
>
>Jerry
On Thu, 1 Jan 2004 12:22:17 -0800, "Jerry Bransford"
<jerrypb@mecox.net> wrote:
>What size suspension lift do you have, if you have one, and do you have the
>factory Pitman steering arm or a dropped Pitman arm?
>
>Jerry
01-01-2004, 03:53 PM
#39
Guest
Posts: n/a
Re: YJ Axle Shift Motor
Standard suspension with 300,000 km's on it.
On Thu, 1 Jan 2004 12:22:17 -0800, "Jerry Bransford"
<jerrypb@mecox.net> wrote:
>What size suspension lift do you have, if you have one, and do you have the
>factory Pitman steering arm or a dropped Pitman arm?
>
>Jerry
On Thu, 1 Jan 2004 12:22:17 -0800, "Jerry Bransford"
<jerrypb@mecox.net> wrote:
>What size suspension lift do you have, if you have one, and do you have the
>factory Pitman steering arm or a dropped Pitman arm?
>
>Jerry
01-01-2004, 03:53 PM
#40
Guest
Posts: n/a
Re: YJ Axle Shift Motor
Standard suspension with 300,000 km's on it.
On Thu, 1 Jan 2004 12:22:17 -0800, "Jerry Bransford"
<jerrypb@mecox.net> wrote:
>What size suspension lift do you have, if you have one, and do you have the
>factory Pitman steering arm or a dropped Pitman arm?
>
>Jerry
On Thu, 1 Jan 2004 12:22:17 -0800, "Jerry Bransford"
<jerrypb@mecox.net> wrote:
>What size suspension lift do you have, if you have one, and do you have the
>factory Pitman steering arm or a dropped Pitman arm?
>
>Jerry
