Changing the Differential Fluid
Thread Starter
Instructor
Joined: Jun 2019
Posts: 232
Likes: 14
Changing the Differential Fluid
A little Sunday project. First time changing the diff fluid on the '81. Don't have the bottom drain plug,, why not?? Another genious design!
My hose from the fluid pump isn't really flexible and doesn't appear to bend down; only to the front of the diff.
Is the trick to raise the rear so that the fluid pools as far forward in the diff?
My hose from the fluid pump isn't really flexible and doesn't appear to bend down; only to the front of the diff.
Is the trick to raise the rear so that the fluid pools as far forward in the diff?
Pro
Joined: Mar 2014
Posts: 529
Likes: 113
From: Texas
A little Sunday project. First time changing the diff fluid on the '81. Don't have the bottom drain plug,, why not?? Another genius design!
My hose from the fluid pump isn't really flexible and doesn't appear to bend down; only to the front of the diff.
Is the trick to raise the rear so that the fluid pools as far forward in the diff?
My hose from the fluid pump isn't really flexible and doesn't appear to bend down; only to the front of the diff.
Is the trick to raise the rear so that the fluid pools as far forward in the diff?
Thread Starter
Instructor
Joined: Jun 2019
Posts: 232
Likes: 14
Just curious? How often are the clutch packs supposed to be serviced? Doesn't that require dropping the carrier and diff? And then basically rebuilding the diff?
Last edited by eddp; Nov 3, 2019 at 02:51 PM. Reason: add
Le Mans Master
Joined: Aug 2017
Posts: 8,336
Likes: 2,810
From: Cool Northern Michigan
eddp,
Why no drain plug? Lets just say for sake of argument that it wouldn't cost GM a penny to add one. However, 40 yrs later, someone would be asking:
Why does my rear axle drainplug drip?
Why does my trans - pan plug weep?
Just like an oil pan plug, it will drip. Trust me.
Why no drain plug? Lets just say for sake of argument that it wouldn't cost GM a penny to add one. However, 40 yrs later, someone would be asking:
Why does my rear axle drainplug drip?
Why does my trans - pan plug weep?
Just like an oil pan plug, it will drip. Trust me.
Racer
Joined: Mar 2018
Posts: 395
Likes: 52
From: wilmington Ma
eddp,
Why no drain plug? Lets just say for sake of argument that it wouldn't cost GM a penny to add one. However, 40 yrs later, someone would be asking:
Why does my rear axle drainplug drip?
Why does my trans - pan plug weep?
Just like an oil pan plug, it will drip. Trust me.
Why no drain plug? Lets just say for sake of argument that it wouldn't cost GM a penny to add one. However, 40 yrs later, someone would be asking:
Why does my rear axle drainplug drip?
Why does my trans - pan plug weep?
Just like an oil pan plug, it will drip. Trust me.
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