m1008 brakes

[TedO]

how do I adjust the brakes on my m1008 so it gets more from the front, less from the back. Now when I stop at every red light, my back wheels are locking up and I get angry looks from the guy in front of me who thinks I am hot rodding.

 

[dstang97]

Back off on the adjusters. Time for some YouTube videos on adjusting drum brakes.

 

[porkysplace]

It sounds like the rear proportioning valve is the issue

It should be covered in this TM chapter 11
TM9-2320-289-20.pdf
TM9-2320-289-20 Unit maintenance manual for all variants CUCV.

Parts TM
TM9-2320-289-20P.pdf
TM9-2320-289-20P Unit maintenance and depot maintenance parts and special tool lists for CUCV.

And the rest of the TM's
TM's for the CUCV


This thread has a good picture of the rear proportioning valve
M1008 Brake problem


Rear brake load proportioning valve

 

[TedO]

thanks very much everybody!!

It sounds like the rear proportioning valve is the issue

It should be covered in this TM chapter 11
TM9-2320-289-20.pdf
TM9-2320-289-20 Unit maintenance manual for all variants CUCV.

Parts TM
TM9-2320-289-20P.pdf
TM9-2320-289-20P Unit maintenance and depot maintenance parts and special tool lists for CUCV.

And the rest of the TM's
TM's for the CUCV


This thread has a good picture of the rear proportioning valve
M1008 Brake problem


Rear brake load proportioning valve

 

[doghead]

Start with disassembling them and inspecting them.

Locking up is one of the signs of oil contamination from bad seals.

A simple look(no disassembly needed) at the backing plates may tell you something, are they wet or dry?

 

[the skull]

Mine did that for a few trips. I used a can of brakekleen and
emery cloth on the shoes and drums. One had gear oil on it.
I might have gotten lucky, shes stops real nice

 

[TedO]

Start with disassembling them and inspecting them.

Locking up is one of the signs of oil contamination from bad seals.

A simple look(no disassembly needed) at the backing plates may tell you something, are they wet or dry?

sorry, I am a beginner. If the backing plate is wet (with brake fluid?), then I have problems with the seals? These seals are in the brake drum itself?

 

[doghead]

Gear oil from the differential also lubricates the wheel bearings.

The hubs have seals to keep the oil in them.

When the seals leak, the brake shoes get oil on them. This will cause the grabbing brakes you described.

A look at the -20 parts TM should help you understand/see the way this is assembled.

Repair should be in the -20 level TM.

 

[TedO]

Gear oil from the differential also lubricates the wheel bearings.

The hubs have seals to keep the oil in them.

When the seals leak, the brake shoes get oil on them. This will cause the grabbing brakes you described.

A look at the -20 parts TM should help you understand/see the way this is assembled.

Repair should be in the -20 level TM.

got it. Thanks.