Instuctions on changing differental oil

[99svtdvr]

Does anyone have a link or instructions on how to change the differential oil?

Looking to perform maintenance this winter and this is on my list. I have done a search, but couldn't find anything...

99 cobra IRS

Click to read more...

 

[Fast99Snake]

i just did it while i had my whole irs out for other reasons
basically just drain and fill pretty much, the axles pop right in and out

 

[99svtdvr]

do you think it can be done with the IRS still in?

There is no drain plugs on them right? Just the cover needs to be removed.

 

[qwik01cobra]

never done this on IRS cars but I'm sure its the same as a solid.

Pull the rear cover off... let it drain and inspect anything for damage. Once its drained put a new gasket on or just use RTV sealant and run a good bead around the contact points. Tighten it to the factory torque specs and fill it up.

On the front side of the pumpkin above the driveshaft to the right (if your looking at the car front the front to back) there should be a 3/8" square input plug to fill it back up, the plug itself is round the input is a 3/8" square input for a ratchet or extension (you can 3/8" ratchet or in most cases extension on a ratchet to take it out). Put a rubber vacuum hose on the end of the quart that will fit in the plug hole and squeeze away. Once it starts coming out you know its full.... and your forearms will be at muscle failure from squeezing so long.

PS: make sure the car itself is level when filling back up with dif. fluid :biggthump

 

[ShelbyGuy]

remove pumpkin from irs subassembly
remove cover
tap housing for, and install drain plug
reseal cover
replace pumpkin in irs subassembly

 

[99svtdvr]

remove pumpkin from irs subassembly
remove cover
tap housing for, and install drain plug
reseal cover
replace pumpkin in irs subassembly

Thanks ShelbyGuy

Sounds complicated. How easy is it to take out the pumpkin?

Shit, as long as it is out, I may as well take it somewhere and have gears installed. Hmm....looks like a good winter project.

 

[Maniak]

dont forget the friction modifyer.

gear lube and modifyer smell nasty...try not to get it on ur clothes

 

[Fast99Snake]

that depends on what fluid you use
some you do and some you don't

 

[PJx5x]

remove pumpkin from irs subassembly
remove cover
replace with this
reseal cover
replace pumpkin in irs subassembly

fixed

 

[99 Stangbanger]

Conan, Save up for 410 or 430's and get a new Diff cover as well. Make it worth your while. I know a good shop that will do your gear for 350.00 if you buy the parts!

Had mine done there!

 

[ShelbyGuy]

you seem to be confused. this thread is about IRS cars.

fixed

 

[ChromeCobra]

dont forget the friction modifyer.

gear lube and modifyer smell nasty...try not to get it on ur clothes

+1:crying:

 

[batman]

+1 on doing the gear...