BCM Community

Hello to all:

My rear end is leaking in 5 spots and I can't stop.
Does anyone know of a shop for a rebuilt or reconditioned rear axle/deiferential?

1976 5B MCI auto trans mission Allision 640

thanks

Rick

Where is leaking at the drop box, differential pumpkin where ? most of the time people used lock washers instead of grade 8 flat washers or used silicone instead of gaskets 

the drop box seal (WHICH WAS JUST REPLACED)and pumpkin seam, the front access plate. welded on some but still have 5 leaks
extreme rust -- most nuts corroded

Any place to take or refurnished axle?

Thanks

Rick

the drop box seal (WHICH WAS JUST REPLACED)and pumpkin seam, the front access plate. welded on some but still have 5 leaks
extreme rust -- most nuts corroded

Any place to take or refurnished axle?

Thanks

Rick

Luke at U. S. Coach in New Berlin, New Jersey

Doesn't sound all that bad to me,when drop seals leak it usually a sign of bearings starting to fail or wasn't pre loaded. I know of no one that wants to work on the drop box setup anymore. Gary Hatt did his own at my place and stopped the leaks took him 4 days to remove the silicone 

I also sent days scraping the stuff off and cleaning with spirits but wanted to find someone who has done it before or many times.
They know the tricks to working on that giant piece of metal.

thanks

Quote from: richardkillmon on October 05, 2021, 06:57:07 AM
I also sent days scraping the stuff off and cleaning with spirits but wanted to find someone who has done it before or many times.
They know the tricks to working on that giant piece of metal.

thanks

Where are you located,I am 8 miles N of Needles Ca when I get 3 engines done and the Calvary comes in Jan maybe we can help you fix the problem,the group jumps in and helps other people they work together and no money changes hands makes it nice even Gary works lol and cost me a little but I don't mind it,If you want to buy a unit Chris Newton is parting out a MCI 5 a tree fell on you can reach him on facebook   

For cleaning surfaces in my opinion is a angled (90 degree) die grinder with prep pads will quickly and easily peel silicon or old stuck on gasket material right off. Use it so it throws the crap away from the inside of the housing saves hours of scraping. Also Fleet Pride formerly Catco in Roseville MN will rebuild dropboxes  (new bearings) minus bad gears and carriers they did mine.

thanks