AW4 Questions
 

OK, so I know a little about automatic transmissions, but not much. I know
they use between 3 and 5 sets of planetary gear sets, each consisting of
three gear sets. One sun gear, three planet gears revolving around the sun
gear, and an outside ring gear. I belive the AW4 has 4 gear sets.

I know that automatic transmissions uses fluid pressure on each clutch pack
to engage and disengage each set of gears (sun, planet, ring) in each
planetary gear set to change the way the output reflects the input, and thus
each set of gears is manipulated to create (in this case) 1, 2, 3, OD, and
R.

What I don't know is how many clutch packs are used per gear set, or per
planetary set. This really isn't much of a concern.

My question is.. Generally when I'm wheeling with an automatic, I never
leave 1st or 2nd gear. So, when the AW4 is in 'D' or 'OD' (same positon on
my 2k) is there a difference in the amount of clutch packs, fluid pressure,
or which clutch packs are used as opposed to when the transmission is in
'1-2'? My reasoning is that if more clutch packs are used when in '1-2' than
'D', they may be less likely to slip. Slipping=heat. Heat=Death. Also, the
tranmission may use different combinations of plantery sets to provide '1-2'
when in 'D' then it does when in '1-2', potentially resulting in less heat.

Am I making any sense at all?

Is the line pressure higher in '1-2' than 'D'?

I know the AW4 is overbuilt, but I want to keep it as cool as possible when
I'm wheeling. My 2k has the factory towing package. My plan at this time is
to remove the factory cooler and replace it with a larger, radiator-style
unit, and re-locate the factory cooler to somewhere inside the frame rail or
(suggestions?) as an extra aux. cooler.

TIA,

Carl

Re: AW4 Questions
 

Except when actually shifting between gears, the clutch packs don't slip at
all. That is all taken care off in the torque converter. A radiator cooler
is not a bad idea, as it will help some with warm up of the fluid, but I
don't know that you need it for off road use. The way to tell is to install
a temperature gauge with a sender teed into the coolant line. That should
keep you busy and out of trouble for a few days. ;^)

Earle

"Carl" <carlsaiyed@hotmailREMOVE.com> wrote in message
news:IdudnUMkKO_Ar6XYnZ2dnUVZ_vadnZ2d@comcast.com. ..
> OK, so I know a little about automatic transmissions, but not much. I know
> they use between 3 and 5 sets of planetary gear sets, each consisting of
> three gear sets. One sun gear, three planet gears revolving around the sun
> gear, and an outside ring gear. I belive the AW4 has 4 gear sets.
>
> I know that automatic transmissions uses fluid pressure on each clutch
pack
> to engage and disengage each set of gears (sun, planet, ring) in each
> planetary gear set to change the way the output reflects the input, and
thus
> each set of gears is manipulated to create (in this case) 1, 2, 3, OD, and
> R.
>
> What I don't know is how many clutch packs are used per gear set, or per
> planetary set. This really isn't much of a concern.
>
> My question is.. Generally when I'm wheeling with an automatic, I never
> leave 1st or 2nd gear. So, when the AW4 is in 'D' or 'OD' (same positon on
> my 2k) is there a difference in the amount of clutch packs, fluid
pressure,
> or which clutch packs are used as opposed to when the transmission is in
> '1-2'? My reasoning is that if more clutch packs are used when in '1-2'
than
> 'D', they may be less likely to slip. Slipping=heat. Heat=Death. Also, the
> tranmission may use different combinations of plantery sets to provide
'1-2'
> when in 'D' then it does when in '1-2', potentially resulting in less
heat.
>
> Am I making any sense at all?
>
> Is the line pressure higher in '1-2' than 'D'?
>
> I know the AW4 is overbuilt, but I want to keep it as cool as possible
when
> I'm wheeling. My 2k has the factory towing package. My plan at this time
is
> to remove the factory cooler and replace it with a larger, radiator-style
> unit, and re-locate the factory cooler to somewhere inside the frame rail
or
> (suggestions?) as an extra aux. cooler.
>
> TIA,
>
> Carl
>
>



--
Posted via a free Usenet account from http://www.teranews.com

Re: AW4 Questions
 

Except when actually shifting between gears, the clutch packs don't slip at
all. That is all taken care off in the torque converter. A radiator cooler
is not a bad idea, as it will help some with warm up of the fluid, but I
don't know that you need it for off road use. The way to tell is to install
a temperature gauge with a sender teed into the coolant line. That should
keep you busy and out of trouble for a few days. ;^)

Earle

"Carl" <carlsaiyed@hotmailREMOVE.com> wrote in message
news:IdudnUMkKO_Ar6XYnZ2dnUVZ_vadnZ2d@comcast.com. ..
> OK, so I know a little about automatic transmissions, but not much. I know
> they use between 3 and 5 sets of planetary gear sets, each consisting of
> three gear sets. One sun gear, three planet gears revolving around the sun
> gear, and an outside ring gear. I belive the AW4 has 4 gear sets.
>
> I know that automatic transmissions uses fluid pressure on each clutch
pack
> to engage and disengage each set of gears (sun, planet, ring) in each
> planetary gear set to change the way the output reflects the input, and
thus
> each set of gears is manipulated to create (in this case) 1, 2, 3, OD, and
> R.
>
> What I don't know is how many clutch packs are used per gear set, or per
> planetary set. This really isn't much of a concern.
>
> My question is.. Generally when I'm wheeling with an automatic, I never
> leave 1st or 2nd gear. So, when the AW4 is in 'D' or 'OD' (same positon on
> my 2k) is there a difference in the amount of clutch packs, fluid
pressure,
> or which clutch packs are used as opposed to when the transmission is in
> '1-2'? My reasoning is that if more clutch packs are used when in '1-2'
than
> 'D', they may be less likely to slip. Slipping=heat. Heat=Death. Also, the
> tranmission may use different combinations of plantery sets to provide
'1-2'
> when in 'D' then it does when in '1-2', potentially resulting in less
heat.
>
> Am I making any sense at all?
>
> Is the line pressure higher in '1-2' than 'D'?
>
> I know the AW4 is overbuilt, but I want to keep it as cool as possible
when
> I'm wheeling. My 2k has the factory towing package. My plan at this time
is
> to remove the factory cooler and replace it with a larger, radiator-style
> unit, and re-locate the factory cooler to somewhere inside the frame rail
or
> (suggestions?) as an extra aux. cooler.
>
> TIA,
>
> Carl
>
>



--
Posted via a free Usenet account from http://www.teranews.com

Re: AW4 Questions
 

Except when actually shifting between gears, the clutch packs don't slip at
all. That is all taken care off in the torque converter. A radiator cooler
is not a bad idea, as it will help some with warm up of the fluid, but I
don't know that you need it for off road use. The way to tell is to install
a temperature gauge with a sender teed into the coolant line. That should
keep you busy and out of trouble for a few days. ;^)

Earle

"Carl" <carlsaiyed@hotmailREMOVE.com> wrote in message
news:IdudnUMkKO_Ar6XYnZ2dnUVZ_vadnZ2d@comcast.com. ..
> OK, so I know a little about automatic transmissions, but not much. I know
> they use between 3 and 5 sets of planetary gear sets, each consisting of
> three gear sets. One sun gear, three planet gears revolving around the sun
> gear, and an outside ring gear. I belive the AW4 has 4 gear sets.
>
> I know that automatic transmissions uses fluid pressure on each clutch
pack
> to engage and disengage each set of gears (sun, planet, ring) in each
> planetary gear set to change the way the output reflects the input, and
thus
> each set of gears is manipulated to create (in this case) 1, 2, 3, OD, and
> R.
>
> What I don't know is how many clutch packs are used per gear set, or per
> planetary set. This really isn't much of a concern.
>
> My question is.. Generally when I'm wheeling with an automatic, I never
> leave 1st or 2nd gear. So, when the AW4 is in 'D' or 'OD' (same positon on
> my 2k) is there a difference in the amount of clutch packs, fluid
pressure,
> or which clutch packs are used as opposed to when the transmission is in
> '1-2'? My reasoning is that if more clutch packs are used when in '1-2'
than
> 'D', they may be less likely to slip. Slipping=heat. Heat=Death. Also, the
> tranmission may use different combinations of plantery sets to provide
'1-2'
> when in 'D' then it does when in '1-2', potentially resulting in less
heat.
>
> Am I making any sense at all?
>
> Is the line pressure higher in '1-2' than 'D'?
>
> I know the AW4 is overbuilt, but I want to keep it as cool as possible
when
> I'm wheeling. My 2k has the factory towing package. My plan at this time
is
> to remove the factory cooler and replace it with a larger, radiator-style
> unit, and re-locate the factory cooler to somewhere inside the frame rail
or
> (suggestions?) as an extra aux. cooler.
>
> TIA,
>
> Carl
>
>



--
Posted via a free Usenet account from http://www.teranews.com