Rear end help

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Dec 4, 2009 | 10:08 AM

#16

BarnieTrk

Cargo Master

Joined: Oct 2005

Posts: 2,084

Likes: 94

From: Stanton, Michigan, USA

Quote:

Originally Posted by f1001962

Ahaha...

I just use the search to figure out how to drop the rear-end fluid. Looks like a major project I don't want to get into now. I tried taking out the lowest bolt (not stud) and nothing. I did the tranny fluid and gave up on the rear end. Just topped it off for now. How much do they hold?

Maybe I'll try a pump gun in the spring.

It should hold 4.5 pints (or 2.25qts).
I refilled mine with some Texas Refinery Corporation (TRC) 790 SURE Universal gear lube, 85w-140 (GL-5 rated) that I picked up from Tractor Supply Company (TSC).
I think it was about 7-8$ per quart.

Realize that using a pump, you won't be able to get most of the 40+yr old sludge out of your housing. I highly recommend that you spend a little "quality time" with your truck and pull the axles out, pull the carrier out, give them a good inspection, flush and wipe out the housing and then re-install your carrier (with a new gasket at the housing), re-install your axles and then re-fill the housing with new, fresh gear lube.... your truck will thank you for it and you won't need to concern yourself with changing the lube again for at least a decade or two!

Good Luck!
BarnieTrk

Dec 4, 2009 | 06:38 PM

#17

f1001962

Freshman User

Joined: Oct 2009

Posts: 29

Likes: 0

Yes,
Thank you.

Not right now though, don't have the time to get involved with it right now. I think I would drill and tap the diff housing on the bottom while I was at it so it could be drained easy.

Dec 5, 2009 | 09:18 PM

#18

BarnieTrk

Cargo Master

Joined: Oct 2005

Posts: 2,084

Likes: 94

From: Stanton, Michigan, USA

Quote:

Originally Posted by f1001962

Yes, Thank you.
Not right now though, don't have the time to get involved with it right now. I think I would drill and tap the diff housing on the bottom while I was at it so it could be drained easy.

When you do get around to doing it, you may discover that the housing will not provide you with much metal to carve threads into.
You may want to consider using one of these: Mark Williams Enterprises - Detail
Placing the plug bung off to either side or in the lower rear area, rather than at the very bottom of the housing, as that location can be banged easily if you ever have cause to drive over a curb, or maybe slip a floor jack under the bottom of the housing.

Good Luck!
BarnieTrk