Need help with my M931A2 BOB project

[redlabelauto]

I recently bobbed my 5 ton and it all went great until I ran into a clearance issue with the rear springs not fitting with the park brake air pods. I was wondering if anyone else has had the same issue and what was done to correct it. I spoke to the guys at Boyce Equipment where I purchased the kit from and they mentioned using shorter pods. I haven't been able to find any. Project is on hold for now. Please help


Alex V.
1991 M931A2 future toy hauler
1961 Unimog 404 Crawler

 

[jcappeljr]

Ive bobbed a few M939 5 tons.Spin the brake cans a little.and repipe the air lines.Works fine.

 

[aheilmann68]

If your running a front suspension you need to rotate the cans to clear the fittings. Its been talked about on the bobber build threads. Iirc you cage the brakes, loosen the band that contains the halves and rotate them and reconnect with new air lines.

 

[11BC2]

I recently bobbed my 5 ton and it all went great until I ran into a clearance issue with the rear springs not fitting with the park brake air pods. I was wondering if anyone else has had the same issue and what was done to correct it. I spoke to the guys at Boyce Equipment where I purchased the kit from and they mentioned using shorter pods. I haven't been able to find any. Project is on hold for now. Please help t


Alex V.
1991 M931A2 future toy hauler
1961 Unimog 404 Crawler

Howdy!!
I'm in Roseville and will be starting my own bobber project.
If you need a hand, let me know.

 

[mendo]

Howdy!!
I'm in Roseville and will be starting my own bobber project.
If you need a hand, let me know.

I know!! I would love to help you out on this, let me know when you are starting. Frankie's Dad.

 

[tim410]

Any pictures of spun air cans? Im running into same problem right now.

 

[jcappeljr]

I put some pics in previous threads I did when building my bobbed trucks.Its a easy solution..

 

[CBR Metalworks]

I am not sure how just spinning the air cans makes room, the last truck I bobbed I rotated the rear cans but the springs would still hit the cans. I had to run a small lift block for clearance.

Can the whole backing plate on the axle be rotated? Seems like that would be a lot of work but might be better than running a spacer.