Master Cylinder
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Master Cylinder
Changing mine out tomorrow due to leakage. I have power brakes on a 67 F-100, automatic transmission. Any minefields here? It looks pretty straightforward...is it a 2-man job? Thanks for the help!
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From: charlotte nc
Its a one man job, but I always need to have someone "pump up and repump: when I bleed the entire system,If you "bench bleed" the MC correctly you should not have an air in the system problem
Fleet Owner
Joined: Jun 1999
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From: Creedmoor, North Carolina
Originally Posted by thefarelaneman
Its a one man job, but I always need to have someone "pump up and repump: when I bleed the entire system,If you "bench bleed" the MC correctly you should not have an air in the system problem
If you feel that you need to clairify your post please do.
John
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Originally Posted by thefarelaneman
Its a one man job, but I always need to have someone "pump up and repump: when I bleed the entire system,If you "bench bleed" the MC correctly you should not have an air in the system problem
Myself, Depends if I am alone or not.
I like to gravity drain the brake lines then tighten them up before I have someone start pumping on the pedal.
If I am alone, I either pressure bleed them or vacuum bleed them.
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Just finished the job, and I'm disappointed. Easily swapped out the MC, bench bled it, installed it, bled brake lines RR, LR, RF, LF. Went through 30 ozs. of Dot-3, 2 test drives, more extensive bleeding, but the brakes remain spongy. (I did accidentally run the front MC compartment dry and had to start over...). Drums all around...what's my next course of action?
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Ford brakes (especially with drums all-around) are naturally spongy.
Did you make all the necessary adjustments
Brake shoes, M/C pushrod
Did you make all the necessary adjustments
Brake shoes, M/C pushrod
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Negative; didn't think I had to do anything at all with the shoes. Also, with the automatic, did nothing with push rod extending through power booster...spongy is okay, I guess, but pedal travels all the way to floor at a stoplight...what's the difference between pressure bleed and vacuum bleed?
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From: Westminster, Colorado
Originally Posted by WOFP
Is there a good way to determine if it's a bleed issue or a wheel cylinder problem?
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Joined: Oct 2004
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From: Northern Virginia
I went around with this issue last week.If your m/c came with a bench bleeder,two tubes with plastic nuts that your circulate the fluid thru the mc,do it again and re bleed the brakes.If the M/C gave you two plugs and tells you to pump with the plugs in to bleed,get a bleeder kit with the hoses.Solved my spongy brake problem.If the m/c is bad if should still be fairly stiff it will just bleed by with steady pressure such as sitting at a stop light provided there is no fluid loss.Take it back then.If you lose pedal pressure and have fluid loss in the m/c check your wheel cylinders.
Joe
Joe
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Thanks, Joe; I did indeed use the bench bleeder with the tubes. Have bled all 4 brakelines, and I get a steady stream of fluid, with no air, coming from each bleeder valve. No smattering of brake fluid was evident to indicate a wheel cylinder problem. Shall I start all over again?