Brake pedal and Master cylinder Adjustment.
Posted: Tue Apr 19, 2022 9:56 am
Which is the first adjustment? 
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The GMC CCKW
This is a discussion forum on the GMC World War 2 era 2.5 ton truck...the CCKW.
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Brake pedal and Master cylinder Adjustment.
Page 1 of 1
Re: Brake pedal and Master cylinder Adjustment.
Posted: Sat Apr 23, 2022 10:16 am
Re: Brake pedal and Master cylinder Adjustment.
Posted: Mon Apr 25, 2022 8:19 pm
Page 12-29 TM10-1563.
Re: Brake pedal and Master cylinder Adjustment.
Posted: Wed Apr 27, 2022 6:31 pm
Re: Brake pedal and Master cylinder Adjustment.
Posted: Thu Apr 28, 2022 8:16 pm
ADVANCE.
Re: Brake pedal and Master cylinder Adjustment.
Posted: Sun May 01, 2022 8:44 pm
RETREAT.
Re: Brake pedal and Master cylinder Adjustment.
Posted: Mon May 02, 2022 9:10 am
The purpose of the large hole (admission B) is to rebalance the depression caused in the retreat.
Re: Brake pedal and Master cylinder Adjustment.
Posted: Fri May 06, 2022 12:56 pm
On page 353,Par 187,(1)IMPORTANT...........Always check this clearance(0.020") before making pedal to toe board clearance adjustment.(TM9-801)
Re: Brake pedal and Master cylinder Adjustment.
Posted: Fri May 13, 2022 7:02 am
My brakes were locking up:Hi guys. Today my mechanic solved the problem of my truck's wheels locking. He acted by moving back the stop screw that is behind the master cylinder lever. With this the master cylinder piston can go back further in the system return releasing the return hole and causing the wheels to no longer lock up.
Re: Brake pedal and Master cylinder Adjustment.
Posted: Thu Dec 28, 2023 3:23 pm
Hi Guy's regarding the master cilinder, should both holes A and B in Fernando's picture be open? Seems like in my cilinder only hole B is drilled through.
I am running in the problem that after overhauling the master brake cilinder, the first push of the brake pedal goes to the floor, the second pump gives pressure, only after relaise of the pedal and wait for a few seconds and the pedal goes to the floor again. I have bleed the brakes and i am suspecting the master cilinder misfunction, could be the issue with the holes, any advice would be welcome.
Thanks Rik
I am running in the problem that after overhauling the master brake cilinder, the first push of the brake pedal goes to the floor, the second pump gives pressure, only after relaise of the pedal and wait for a few seconds and the pedal goes to the floor again. I have bleed the brakes and i am suspecting the master cilinder misfunction, could be the issue with the holes, any advice would be welcome.
Thanks Rik