i have a 1977 f600 dump truck. it has 6'' rear brake shoes and dual wheel cylinders. im rebuilting the back brakes and have been unable to find the lower cylinder. raybestos.com only shows one wheel cylinder for my truck and it has a bleed screw. my top cylinder has a bleeder screw but the lower one has to 7/16 lines going to it. has anyone exprienced this? thanks in advance. chad

 

Is it possible that they are really 2 of the same part number wheel cylinders?

Does it look like the bleeder screw threads and the line threads are the same size?

 

i believe he is right , as I remember years ago the same kits for rebuilding them were the same !

 

I removed the wheel cylinder and checked the threads and found the inlet and outlet to be 7/16. I called raybestos brake tech line and Tim confirmed that they are the same. Raybestos WC24489. You guys were right on. Thanks for your help. Also if your needing brake parts check the prices at rockauto.com. I was able to get the wheel cylinder for $12.47.

 

All four rear cylinders are the same. There are two choices, as it depends on the weight capacity of the rear axle.

4) C5TZ-2261-A .. Rear Wheel Cylinder-1 3/4"

4) C5TZ-2261-B .. Rear Wheel Cylinder-1 5/8"