Quick Differential Help Please!
Professional
Joined: Sep 2010
Posts: 167
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From: New Brunswick Canada
Well yes that is slightly correct as if there isn't enough grip on the clutch disks and they are worn they will not transfer power as they are designed to do. But it still would not act like an open gearing, but close to it.
I hope you installed the 7oz (I install 8oz) of Friction Modifier in it after you opened it up? If not drain and install and pray. Your issue could also be a bad U-joint.
As for the rebuild. It took me 2 days but I had to do a full clean out job and it was my first rebuild. Knowing what I know now and I have most all the tools it would be 1 day unless there was issues.
I hope you installed the 7oz (I install 8oz) of Friction Modifier in it after you opened it up? If not drain and install and pray. Your issue could also be a bad U-joint.
As for the rebuild. It took me 2 days but I had to do a full clean out job and it was my first rebuild. Knowing what I know now and I have most all the tools it would be 1 day unless there was issues.
- No I did not add the modifier - I believe that is only for LSD - I am not confirmed to have LSD
- Not a bad Ujoint, they all feel tight, no play
- When I opened up the pumpkin, there wasn't any metal on the magnet, nothing on the bottom, just fluid. It looked really clean.
- If I am understanding this right, if it is an LSD and the clutch packs are gone making it work like an open diff - I still should be able to raise an identify which diff I have because if it is an LSD, it should spin both wheels in the same direction.
THE ULTI-MOD
Joined: Jan 2007
Posts: 19,797
Likes: 36
From: Union NJ
if the clutch packs are bad there is a chance that jacking it up and turning the wheels will NOT work to confirm, it may well behave like an open diff, however not putting the friction modifier in it if you have limited slip will cause weird behavior even if the clutch packs are shot
if you are unsure the friction modifier in the diff oil is cheap insurance over a rear end rebuild IMHO
if you are unsure the friction modifier in the diff oil is cheap insurance over a rear end rebuild IMHO
I had the diff open to change the fluid this summer, also changed pinion seal - nothing found on the magnet etc but afterwards I noticed a slight shudder from a dead stop. Now i can feel/hear a vibration in the rear from about 40mph and up when accelerating, quiets down when let off the gas. The truck doesnt shake - you can just hear the rear get louder.
Thoughts?
Thoughts?
Professional
Joined: Apr 2011
Posts: 218
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From: Summerset, SD