rear diff hot enough to cook on

M

mooncounter

NAXJA Forum User

Location

Kelowna BC Canada

• Aug 23, 2008

• #1

'90 XJ 4.0

Had a bearing in my Dana 35c shred itself so I went to the wrecker and replaced entire diff contents from a '91 XJ.

Donor parts are all in nice shape.
Cleaned out axle tubes and diff with a fine toothbrush and reassembled.

Went for a drive... no noises, nice tight drive except...

put in clutch and feels like brakes engage and the diff becomes smokin' hot!

What did I screw up?

(....my axles are made of cheese)

 

bcmaxx

NAXJA Forum User

Location

The West Kootenays,B.C. Canada

• Aug 23, 2008

• #2

see if its in the pinion,axle bearing or the spideys! there are plenty old jeeps in these parts with better rear axles, or you can transplant a ford rear end.


my tie rod is nicknamed the butter bar

 

M

mooncounter

NAXJA Forum User

Location

Kelowna BC Canada

• Aug 23, 2008

• #3

I'd like to find a dana 44....but I couldn't wait...I'm in a rush to go fishin'

 

bcmaxx

NAXJA Forum User

Location

The West Kootenays,B.C. Canada

• Aug 23, 2008

• #4

mooncounter said:

I'd like to find a dana 44....but I couldn't wait...I'm in a rush to go fishin'

Click to expand...

Dam! I just got rid of two good 3:55 complete rears, one had new brakes and e cables, would have been like fifty freight to kelowna, So you basically gutted your original and put everything out of a donor?

will it spin freely by hand?

 

M

mooncounter

NAXJA Forum User

Location

Kelowna BC Canada

• Aug 23, 2008

• #5

yes, it spun nicely by hand....no slop, not tight.......


axle seals? I didn't change them....

 

bcmaxx

NAXJA Forum User

Location

The West Kootenays,B.C. Canada

• Aug 23, 2008

• #6

where on the diff gets hot?

 

M

mooncounter

NAXJA Forum User

Location

Kelowna BC Canada

• Aug 23, 2008

• #7

the entire rear cover is hottt.
the brake drums were not hot.

could smell gear oil cooking from 20 feet away

I gotta go out....But will check back in the morning if anyone has had this happen...

 

-96JeepSpeed-

NAXJA Forum User

Location

Tweaker Valley CA. (Spring Valley)

• Aug 23, 2008

• #8

Mesh could be to tight. Did you use gear chalk when setting it up?

 

L

lawsoncl

NAXJA Forum User

Location

North Idaho

• Aug 23, 2008

• #9

My 93 ZJ absolutley shredded the spider gears a few weeks ago. I was tempted to just throw another set of spiders in there, but the oil and other bearings were full of ground up metal. I just grabbed an entire axle at the JY for $60 and swapped it in. I think it was less effort and cheaper than replacing all the bearings, reshimming, etc.

Did you re-set up the gears or just install and pray? Check the tooth pattern?

Looking at the old axle after it was out, and its bent.