I have a 94 2 wheel drive F-150. The rear brakes shoes are not showing signs of wear in 25K miles. When the truck comes to a stop it feels like the front brakes are doing all the work. If I depress and release the E-brake a couples times the truck stops better and feels right for about 10 stops but then goes back to front brakes only. I replaced the entire front brake system from the hard line at the original MS to the wheels with no improvement. I bled the entire system several times and no improvement. The truck has rear only ABS. Any suggestions on the problem?

thx

 

Welcome to the board.

Crawl under your truck by the rear axle. On the back of the brake drum is a small black rubber plug shaped like an oval. Remove this plug and you should be able to see a small gear. Using a flat head screwdriver, turn this gear up towards the bed of your truck. This moves the brake shoes out, closer to the inside of the drum. Move the gear until it won't move anymore and then back it off a few times by moving the gear down. You will need to do this for both rear wheels. This should help tighten up your rear brakes. If you over-do it, you will lock up the rear brakes when you have to stop.

Good luck.

 

couldnt have said it better! BUT! they might need replacin soon. My cylinders were shot, and my front brakes were doing all the work and got warped. So watch it!

 

I adjusted them but it did not change how the truck feels when stoping. I have not checked the max dia of the drums. If they are beyond max dia do ya think maybe the wheel cylinders are are not pushing the shoes out far enough to make good contact with the drum surface?
The only time I feel improved stoping action is after I push and release the E-brake 4 or 5 times. The truck feels much better coming to a stop but then it reverts back to the feel of front brakes only after using the brakes a couple times.

 

I'd say that your system needs bleeding, but you've already done it. Remove one of drums, have someone push the brake pedal, and see if the brake shoes are moving. I'm not sure how exactly rear ABS works, because this system looks senceless to me. If we'd be talking about some regular car, i'd say that the rear brakes pressure regulator is the most probable cause of rear brakes fault. I guess other guys in here know more about rear ABS system.