Changing rear diff fluid (91 XJ): don't want to R&R the diff cover...
 

What about pumping out the old fluid through the fill hole? Would this be
OK? I guess if there were any metal particles in the fluid the pump wouldn't
pick them up?

--
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Re: Changing rear diff fluid (91 XJ): don't want to R&R the diff cover...
 

Doug did pass the time by typing:
> What about pumping out the old fluid through the fill hole? Would this be
> OK? I guess if there were any metal particles in the fluid the pump wouldn't
> pick them up?

It works just fine for routine changes and when you don't want to
inspect anything. Make your life a bit easier and get a good quality
suction gun/pump and collection jar. I use a glass jar because to get the
lube out easily you should take a nice drive for a few miles to heat
up the lube.

--
DougW

Re: Changing rear diff fluid (91 XJ): don't want to R&R the diff cover...
 

Doug did pass the time by typing:
> What about pumping out the old fluid through the fill hole? Would this be
> OK? I guess if there were any metal particles in the fluid the pump wouldn't
> pick them up?

It works just fine for routine changes and when you don't want to
inspect anything. Make your life a bit easier and get a good quality
suction gun/pump and collection jar. I use a glass jar because to get the
lube out easily you should take a nice drive for a few miles to heat
up the lube.

--
DougW

Re: Changing rear diff fluid (91 XJ): don't want to R&R the diff cover...
 

Doug did pass the time by typing:
> What about pumping out the old fluid through the fill hole? Would this be
> OK? I guess if there were any metal particles in the fluid the pump wouldn't
> pick them up?

It works just fine for routine changes and when you don't want to
inspect anything. Make your life a bit easier and get a good quality
suction gun/pump and collection jar. I use a glass jar because to get the
lube out easily you should take a nice drive for a few miles to heat
up the lube.

--
DougW

Re: Changing rear diff fluid (91 XJ): don't want to R&R the diff cover...
 

Doug did pass the time by typing:
> What about pumping out the old fluid through the fill hole? Would this be
> OK? I guess if there were any metal particles in the fluid the pump wouldn't
> pick them up?

It works just fine for routine changes and when you don't want to
inspect anything. Make your life a bit easier and get a good quality
suction gun/pump and collection jar. I use a glass jar because to get the
lube out easily you should take a nice drive for a few miles to heat
up the lube.

--
DougW

Re: Changing rear diff fluid (91 XJ): don't want to R&R the diffcover...
 

I always recommend opening up the cover for the first change and then
figure pumping is safe after.

The first change will have metal in it, subsequent changes should only
be needed to pump out water.

Don't forget to follow the directions on the gasket sealer/maker you
use. Lots like RTV need 24 hours to cure before you add fluid to insure
they don't leak.

Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's

Doug wrote:
>
> What about pumping out the old fluid through the fill hole? Would this be
> OK? I guess if there were any metal particles in the fluid the pump wouldn't
> pick them up?
>
> --
> Remove nospam to email

Re: Changing rear diff fluid (91 XJ): don't want to R&R the diffcover...
 

I always recommend opening up the cover for the first change and then
figure pumping is safe after.

The first change will have metal in it, subsequent changes should only
be needed to pump out water.

Don't forget to follow the directions on the gasket sealer/maker you
use. Lots like RTV need 24 hours to cure before you add fluid to insure
they don't leak.

Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's

Doug wrote:
>
> What about pumping out the old fluid through the fill hole? Would this be
> OK? I guess if there were any metal particles in the fluid the pump wouldn't
> pick them up?
>
> --
> Remove nospam to email

Re: Changing rear diff fluid (91 XJ): don't want to R&R the diffcover...
 

I always recommend opening up the cover for the first change and then
figure pumping is safe after.

The first change will have metal in it, subsequent changes should only
be needed to pump out water.

Don't forget to follow the directions on the gasket sealer/maker you
use. Lots like RTV need 24 hours to cure before you add fluid to insure
they don't leak.

Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's

Doug wrote:
>
> What about pumping out the old fluid through the fill hole? Would this be
> OK? I guess if there were any metal particles in the fluid the pump wouldn't
> pick them up?
>
> --
> Remove nospam to email

Re: Changing rear diff fluid (91 XJ): don't want to R&R the diffcover...
 

I always recommend opening up the cover for the first change and then
figure pumping is safe after.

The first change will have metal in it, subsequent changes should only
be needed to pump out water.

Don't forget to follow the directions on the gasket sealer/maker you
use. Lots like RTV need 24 hours to cure before you add fluid to insure
they don't leak.

Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's

Doug wrote:
>
> What about pumping out the old fluid through the fill hole? Would this be
> OK? I guess if there were any metal particles in the fluid the pump wouldn't
> pick them up?
>
> --
> Remove nospam to email

Re: Changing rear diff fluid (91 XJ): don't want to R&R the diff cover...
 

Thanks Mike, the rear cover is going to have to come off then.

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"Mike Romain" <romainm@sympatico.ca> wrote in message
news:4276235B.50436F32@sympatico.ca...
>I always recommend opening up the cover for the first change and then
> figure pumping is safe after.
>
> The first change will have metal in it, subsequent changes should only
> be needed to pump out water.
>
> Don't forget to follow the directions on the gasket sealer/maker you
> use. Lots like RTV need 24 hours to cure before you add fluid to insure
> they don't leak.
>
> Mike
> 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
> 88 Cherokee 235 BFG AT's
>
> Doug wrote:
>>
>> What about pumping out the old fluid through the fill hole? Would this be
>> OK? I guess if there were any metal particles in the fluid the pump
>> wouldn't
>> pick them up?
>>
>> --
>> Remove nospam to email