Brake problems
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Senior User
Joined: Mar 2007
Posts: 185
Likes: 0
From: Regina, SK
Brake problems
I just changed the master cylinder and booster on a 75 F-250 crew cab. I put in used parts and they were working okay. I lent the truck to my neighbour and when it came back the brakes were terrible. Now the pedal goes down 85% of the way before the brakes engage. It is not spongy at all. I just drove it to work this morning and have not looked into it at all. Any ideas where to start.
I was hoping it would just be low on fluid as opposed to the cylinder or booster being shot.
I was hoping it would just be low on fluid as opposed to the cylinder or booster being shot.
Senior User
Joined: Feb 2007
Posts: 381
Likes: 5
You do realise that stuff only breaks when:
1) It HAS to work.
2) Someone is watching (i.e. "Check this out")
3) You loan it to somebody.
I agree with ubereal. Bleed the whole system down. Check all the pistons at the wheels for wet spots.
You might not have tightened one of the flare fittings at the master cylinder enough, letting air in.
Booster could be shot. Check that the Vac line is still attached.
1) It HAS to work.
2) Someone is watching (i.e. "Check this out")
3) You loan it to somebody.
I agree with ubereal. Bleed the whole system down. Check all the pistons at the wheels for wet spots.
You might not have tightened one of the flare fittings at the master cylinder enough, letting air in.
Booster could be shot. Check that the Vac line is still attached.
