differential question

Reply Subscribe

Thread Tools

Search this Thread

May 6, 2004 | 08:35 AM

xxxl68

Thread Starter

Heel & Toe

Joined: Dec 2003

Posts: 23

Likes: 0

From: n.y.

differential question

I've got a 68 vert. and while I was removing the rear spring (from where it bolts to the diff.) when I got to the pasenger side foward most bolt, oil started draining from bolt hole in the diff. is this supposed to happen? If not what could be the problem.

Thanks in advance,

xxxl68

[Modified by xxxl68, 8:26 AM 5/6/2004]

May 6, 2004 | 08:51 AM

wombvette

Le Mans Master

Joined: Jan 2000

Posts: 8,918

Likes: 27

From: New Hill NC

Re: differential question (xxxl68)

No. If someone ran the bolt up in there too far it can crack the housing and cause a leak, or there is a fault in the casting.

May 6, 2004 | 09:03 AM

xxxl68

Thread Starter

Heel & Toe

Joined: Dec 2003

Posts: 23

Likes: 0

From: n.y.

Re: differential question (wombvette)

The casting looks good, I've cleaned it up and it doesn't seem to have any cracks. I've never had a problem with it leaking before just this experience.

I have read through my service manual and haven't found anything regarding this type of problem.

So more than likely I'll need a new housing?

xxxl68

May 6, 2004 | 09:20 AM

GTR1999

Tech Contributor

Joined: Aug 1999

Posts: 15,135

Likes: 3,939

From: Connecticut, USA

Re: differential question (xxxl68)

Probably cracked rear cover. Look close to see,if so then you have to drop the rear end out to replace it. Get a HD Muskegon cover to avoid and spring install problems and checkhte yoke play while you have it out.
Gary

May 6, 2004 | 09:28 AM

xxxl68

Thread Starter

Heel & Toe

Joined: Dec 2003

Posts: 23

Likes: 0

From: n.y.

Re: differential question (gtr1999)

I checked the rear cover it looks good. The oil was actually leaking from the bolt hole. Like the blot also served as a drain plug?

xxxl68

[Modified by xxxl68, 8:29 AM 5/6/2004]

May 6, 2004 | 10:20 AM

GTR1999

Tech Contributor

Joined: Aug 1999

Posts: 15,135

Likes: 3,939

From: Connecticut, USA

Re: differential question (xxxl68)

If it's coming from the rear cover bolt hole the cover is no good.I'm going to email you a picture of the inside of a good cover. You will see there is a casting boss in there where the hole is tapped but it isn't open to the differential. Maybe the factory or somebody in the past drilled it too much and blew a hole into it.
Gary

[Modified by gtr1999, 10:27 AM 5/6/2004]

May 6, 2004 | 10:35 AM

LemansBlue68

Melting Slicks

Joined: May 2001

Posts: 2,131

Likes: 4

From: May help you? You can sure as hell try!

Re: differential question (gtr1999)

:iagree:

Cracked rear covers are a very common malady on these cars. Nonetheless, the cover needs replaced if oil is leaking from it. Muskegon Brake sells a very nice heavy duty cover. Buy direct from them to get the best price. A lot of vendors sell the same cover for $20 or more than MB's price. Beware of some of the "reinforced" covers that you will also find for sale. Many of them won't work with the spare tire carrier because the reinforcements will interfere.

[Modified by LemansBlue68, 10:24 AM 5/6/2004]