Front Brake Problems
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Front Brake Problems
69' F100 drums all around. Added boost assist from a junked 78 a year ago.
My left front cylinder blew out the other day, so I decided to do a full front brake job.
Everything is new from the hard lines coming out by the front wheel wells
I put the drums on and adjusted the pads out so they just brush the drums.
Started bleeding from the RR then LR and when I got to the RF no fluid would come out, same with the left front.
Started working my way back disconnecting stuff and and fluid was coming out of the hard lines before the flex lines. Blew on the flex, at first I couldn't get any fluid to come out. Hooked up lines and tried to bleed again, no fluid out the bleeder screw.
Got pissed, walked away and when I came back I disconnected the flex from the hard line and was able to blow fluid out the bleeder screw from the flex.
Hooked the hard and flex back up and was able to bleed all 4 cylinders.
Still no front brakes!
Bled 4 cylinders again
Still no front brakes!
What am I doing wrong? I can't believe I got 2 faulty cylinders or flex hoses.
Time to
My left front cylinder blew out the other day, so I decided to do a full front brake job.
Everything is new from the hard lines coming out by the front wheel wells
I put the drums on and adjusted the pads out so they just brush the drums.
Started bleeding from the RR then LR and when I got to the RF no fluid would come out, same with the left front.
Started working my way back disconnecting stuff and and fluid was coming out of the hard lines before the flex lines. Blew on the flex, at first I couldn't get any fluid to come out. Hooked up lines and tried to bleed again, no fluid out the bleeder screw.
Got pissed, walked away and when I came back I disconnected the flex from the hard line and was able to blow fluid out the bleeder screw from the flex.
Hooked the hard and flex back up and was able to bleed all 4 cylinders.
Still no front brakes!
Bled 4 cylinders again
Still no front brakes!
What am I doing wrong? I can't believe I got 2 faulty cylinders or flex hoses.
Time to
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O'reilley Special brakebest hoses. I'll check em out today.
The other thing is that the new cylinders have their threads tapped for the brake hose at a different angle than the old cylinder leaving no clearance between the metal part of the hose and the post with the zerk fitting.
I went and looked at some cylinders that autozone had and they were tapped at the same angle.
The other thing is that the new cylinders have their threads tapped for the brake hose at a different angle than the old cylinder leaving no clearance between the metal part of the hose and the post with the zerk fitting.
I went and looked at some cylinders that autozone had and they were tapped at the same angle.
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Oh, that sentence should have read, I went and looked at some cylinders that autozone had and they were tapped at the same angle as the O'rilley cylinders.
Took off the right front flex hose and was able to run a piece of wire through it.
The rear brakes work, but not till my pedal is all the way to the floor, going to take off the rear drums and check out those cylinders this afternoon. There must be something leaking back there.
Took off the right front flex hose and was able to run a piece of wire through it.
The rear brakes work, but not till my pedal is all the way to the floor, going to take off the rear drums and check out those cylinders this afternoon. There must be something leaking back there.
Ford Parts Specialist
Joined: Nov 2006
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From: Simi Valley, CA
If the '69 F100 wheel cylinders are wrong, ask for them for a different application. Maybe you'll get lucky.
C5TZ-2061-C Right & C5TZ-2062-C Left .. Front Wheel Cylinders-1 1/8" diameter.
Applications: 1965 F250 2WD with 12 1/8" x 2" brakes / 1967 F350 w/12" x 3" brakes / 1968/71 F100 2WD with 11" x 3" brakes // 1965/67 Econoline with 10" x 2 1/2" brakes.
C5TZ-2061-C Right & C5TZ-2062-C Left .. Front Wheel Cylinders-1 1/8" diameter.
Applications: 1965 F250 2WD with 12 1/8" x 2" brakes / 1967 F350 w/12" x 3" brakes / 1968/71 F100 2WD with 11" x 3" brakes // 1965/67 Econoline with 10" x 2 1/2" brakes.
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Post Fiend
Joined: Nov 2000
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From: Glendale Arizona
If the wheel cyl. failed then the safety block actuated and the front port is blocked by function to allow the rear brakes to stop the truck.
Look to the frame rail and follow the lines from the master to the brass block. Clean it real good with a can of brake kleen or two. you will see a rubber seal on one end and in the middle of it a little metal tit. This pin needs to be pulled out while some one actuates the brakes to re center the valve. You can do this yourself with a hold clip that is described in the shop manual.
It must be manually reset every time a failure occurs.
Also repair or replace the lower left hand dash bulb for the brakes or replace the switch as it should have illuminated when the switch was grounded by the slide.
Garbz
Look to the frame rail and follow the lines from the master to the brass block. Clean it real good with a can of brake kleen or two. you will see a rubber seal on one end and in the middle of it a little metal tit. This pin needs to be pulled out while some one actuates the brakes to re center the valve. You can do this yourself with a hold clip that is described in the shop manual.
It must be manually reset every time a failure occurs.
Also repair or replace the lower left hand dash bulb for the brakes or replace the switch as it should have illuminated when the switch was grounded by the slide.
Garbz
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garbz2,
Can this pin be reset by repeatedly pumping the brakes? I was having my wife do this while I looked for leaks in my lines and all the sudden I had brakes.
I'll check the pin out.
Thanks for the help.
Can this pin be reset by repeatedly pumping the brakes? I was having my wife do this while I looked for leaks in my lines and all the sudden I had brakes.
I'll check the pin out.
Thanks for the help.
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