Part number for rear brake cylinders.

[Mopman]

Hi all,
I am in Australia with a 1969 Chrysler 300. Rear drums are locking up. I was wondering if anyone knows the OEM part numbers for the rear cylinders and brake shoes.

I need to see if they will cross reference with our Chryslers over here.

Cheers.

 

[CBODY67]

You can find a Chrysler parts book of the desired year at www.mymopar.com . Free download. Might need to input that address manually.

Nice looking car and scenery.

CBODY67

 

[MoPar~Man]

If you solve this, I'd like to hear how.

I have 1 rear wheel that locks up at low speed braking, and a shudder from somewhere when braking from about 35 mph. I've had my rear drums turned recently, but won't be in a position to test them now until spring (so like 4 or 5 months from now). The shoes are new. Having 4-wheel drums, I don't have a proportioning valve in the system, but I'm assuming that you probably do - with front disks. Have you checked that valve?

 

[Mopman]

If you solve this, I'd like to hear how.

I have 1 rear wheel that locks up at low speed braking, and a shudder from somewhere when braking from about 35 mph. I've had my rear drums turned recently, but won't be in a position to test them now until spring (so like 4 or 5 months from now). The shoes are new. Having 4-wheel drums, I don't have a proportioning valve in the system, but I'm assuming that you probably do - with front disks. Have you checked that valve?

done a bit more hunting. It might be poor colapsed brake lines. Going to do the lot.

 

[MAXWEDGECHAR]

If you have problems finding the parts Craig @mobileparts can help.

 

[Big_John]

Rear drums are locking up.

Are the front brakes stock? Disc or drums?

Stock master cylinder?

Brake hoses good? They can be bad and still look good, so it's more about how old and/or if they've been manhandled during brake or suspension work.

Sometimes the rears lock because the fronts aren't working right, so look at the fronts too. The fronts have to be right as they provide most of the stopping power.

Are the rear shoes installed correctly with the smaller, primary shoe in the front?

Have the shoes been contaminated? Rear axle seals sometimes leak and leaking wheel cylinders. can contaminate the shoes.

If everything is right, the rears shouldn't lock up too easily. A lot of us drive these cars with stock brakes and not have those problems.

BTW, nice car... I have a '70 300 'vert!