Stuck birfield / oil seal questions (1 Viewer)

reddingcruiser

Practicing for retirement
Supporting Vendor
GOLD Star
Joined
Feb 23, 2011
Messages
3,708
Location
Redding, California
Assuming it's a stock, open diff (or not), the axle shafts engage the side gears which sends the rotation of the ring and pinion out to the wheels. It seems the general consensus is your axle splines are twisted or otherwise bound up in the side gear. I would be surprised if an 8mm bolt will be enough to do the job. It's unusual for the twist to occur inboard of the side gear, but if twist is severe enough there may be too much pressure on the splines for them to slide in or out.
If drilling and tapping for a bolt doesn't work you may end up welding on something more substantial for a better bite, and some hydraulic help. Worst case will require some invasive surgery.
 

OhioFJ

SILVER Star
Joined
Jun 14, 2020
Messages
138
Location
44022
do you still have the roughly 1/2" in/out play on the shaft?

Busted out the seal and got a little more play

DCF3D784-1604-46D7-AA7A-0A6156E5F7DF.jpeg
3B985770-8B09-4FBD-AC69-01D1C2228907.jpeg
 

OhioFJ

SILVER Star
Joined
Jun 14, 2020
Messages
138
Location
44022
Surprisingly they look ok? The photos are take 180deg apart. Further investigation required. I'm going to clean everything up and take a look.


IMG_5643.jpeg
IMG_5644.jpeg
 

reddingcruiser

Practicing for retirement
Supporting Vendor
GOLD Star
Joined
Feb 23, 2011
Messages
3,708
Location
Redding, California
Looks like your lucky day. For the price of a diff gasket you may want to pull the third member and give it a look. You're 95% there now.
 
Joined
Nov 1, 2004
Messages
1,485
Location
Iowa
seemed really strange that you appeared to get 1-2 inches of additional in-out play (out at least) when you removed the axle seal. Almost like it wasn't binding on the inner splines (which are only like 1-1.25" long)? And now they look fine once it's out? I'd definitely pop the diff out to get a look at the side gear insides
 

OhioFJ

SILVER Star
Joined
Jun 14, 2020
Messages
138
Location
44022
Yeah I'm not sure whats going on yet.. The axle really wanted to bind against the front-side of the seal at the knuckle. The housing doesn't look bent enough to have caused the problem; just looking inside I do not see any gross deformation. Will post updates.
 

OhioFJ

SILVER Star
Joined
Jun 14, 2020
Messages
138
Location
44022
seemed really strange that you appeared to get 1-2 inches of additional in-out play (out at least) when you removed the axle seal. Almost like it wasn't binding on the inner splines (which are only like 1-1.25" long)? And now they look fine once it's out? I'd definitely pop the diff out to get a look at the side gear insides

I think its something in the diff.. I can pass the axle smoothly in the axle housing until it meets the side gear in the diff. As it engages the whole axle is being forced forward. This must have put excess pressure on the inner oil seal, causing it fail. Story is not over but it's interesting to figure out why things fail.
 

OhioFJ

SILVER Star
Joined
Jun 14, 2020
Messages
138
Location
44022
Pulled the diff. Overall looks ok to my untrained eye. Will keep looking.

7535B728-905C-4230-AA74-11778E6B6697.jpeg

B6394961-A9C3-427A-9963-AE9986A528AC.jpeg
 

Users who are viewing this thread

Top Bottom