Differential 78 302: external washers and damaged housing questions

3dgraham111

New Member
Oct 9, 2021
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Two questions: I am changing the differential gear oil in my 1978 Mustang 302. It was not leaking before opening.
1. The 10 nuts have washers. The washers were difficult to remove and were destroyed in the process. How important are these washers when reassembling?
2. Once the internal stock gears were removed, I discovered two damaged areas on the housing as shown by the photos. How could this occur and how serious is this?
Thank you for your help.
 
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2Blue2

will be trying this sex one when I can find it
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Mar 5, 2019
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Welcome New Member:)

1. The copper crush washers prevent leaking from bolts and are hard to remove, get new ones or drip on floor.
2. Picture didn't post...
 

3dgraham111

New Member
Oct 9, 2021
10
0
1
64
Texas
I visited a Ford dealership, an O’Reilly’s, and a NAPA for the crush washers. I need 10. One place had eight that might work. It was not the dealership. Can you recommend a place to buy them if these do not work?
Here’s the photo. The damage is on the left and the right side.
 

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2Blue2

will be trying this sex one when I can find it
Mod Dude
Mar 5, 2019
3,148
2,086
143
54
Oahu
Can you recommend a place to buy them if these do not work?
Our usual vendors ~ CJ Pony part, Stang aholics, Classic industries,ect. would be places to look.
Or a local driveline shop.

No idea on how damage occurred but should still work.