View Single Post
  #154  
Old October 27th, 2023, 08:48 PM
Prowbar Prowbar is offline
Senior Member
 
Join Date: Dec 2020
Location: Friesland, the Netherlands
Truck: 1965 GMC 1500, 478 V6, SM420
Posts: 391
Rep Power: 184
Prowbar is a jewel in the roughProwbar is a jewel in the roughProwbar is a jewel in the roughProwbar is a jewel in the roughProwbar is a jewel in the roughProwbar is a jewel in the rough
Default Re: '65 GMC 1500 project. From the Netherlands

More progress on the old Dana 60. Disassembled everything and cleaned up the outside. Lots of dirt and rust came off. It will be painted with epoxy chassis paint when the axle is finished.

The first step in the process it to make a case spreader. I designed my own, based on the original tool. The Allen head bolts fit into the holes in the differential case.

Man, this thing is filthy on the inside. A black goo of metal and old gear oil has coated the inside.
When I got the truck, it seemed like the 1965 gear oil was still in there. Sure left its mark on the components. The pinion bearings are funnily enough OK, still a lot of small indentations in the races of debris in the oil. The carrier bearings are shot. The non ring gear side has small pits from debris, but the ring gear side bearing has extensive spalling and the bearing also spun on the carrier itself

To view some links or images in this forum your post count must be 1 or greater. You currently have 0 posts. Maybe you should introduce yourself with a new topic?

Forgot to take a picture! Will do it later.

Luckily the damage is not too bad, it could have been worse...
Time to repair the carrier. Planning to make a sleeve to repair the damaged surface. Will continue tomorrow.

Then I can use the old bearings as setup bearings, and start the ring and pinion installation.

For fun, I checked the gear pattern before pulling the old carrier. The backlash is way out of spec, but the pattern isn't too bad considering its age.

As you can also see, one of the pinion preload shims came out broken. The pinion oil slinger was also damaged (not by me!) Maybe I got a Monday morning differential?
Attached Images
File Type: jpg 20231024_150411.jpg (182.7 KB, Multiple views, 5 clicks)
File Type: jpg 20231026_134543.jpg (170.3 KB, Multiple views, 5 clicks)
File Type: jpg 20231026_152448.jpg (144.8 KB, Multiple views, 6 clicks)
File Type: jpg 20231026_153259.jpg (87.2 KB, Multiple views, 7 clicks)
File Type: jpg 20231026_160715.jpg (122.2 KB, Multiple views, 5 clicks)

Last edited by Prowbar; October 27th, 2023 at 08:54 PM.
Reply With Quote