cant get any brake pedal. - The 1947 - Present Chevrolet & GMC Truck Message Board Network

chris015 · 04-06-2014, 04:07 PM

87' front disks,rear drums.

Bought it,and rear tire was locking up upon mild braking. adjusted rear brakes,replaced wheel cylinders. didnt help. Had someone look at it and got the rear tire issue fixed. He said he tinkered with the combination valve,but from looking he didnt touch it? not sure. It had good brakes,but a load of pedal travel. I went out and picked up a master cylinder, and now its just spongy..

on front :
new calipers,hoses,pads,master cylinder.

Ive bled the brakes starting from passenger rear etc etc. twice.

No dice.

I didnt bench bleed the cylinder as i dont have a vice or a good place to put it level. I had my father to apply pressure on the brake pedal and popped the lines loose on the master then tightened them. did that a few times. then moved toward the rear,front etc.

Ideas?

**old Rusty C10** · 04-06-2014, 07:11 PM

gotta bench bleed the master they will hold air if you don't.... also get a vacuum bleeder and use that on the wheel cylinders

kalbert · 04-06-2014, 07:13 PM

You have to bench bleed the master. The pedal and linkage hasn't got enough travel to completely bottom out the pistons.

04-06-2014, 04:07 PM	#1
chris015 Registered User Join Date: Mar 2014 Location: sc Posts: 19	cant get any brake pedal. 87' front disks,rear drums. Bought it,and rear tire was locking up upon mild braking. adjusted rear brakes,replaced wheel cylinders. didnt help. Had someone look at it and got the rear tire issue fixed. He said he tinkered with the combination valve,but from looking he didnt touch it? not sure. It had good brakes,but a load of pedal travel. I went out and picked up a master cylinder, and now its just spongy.. on front : new calipers,hoses,pads,master cylinder. Ive bled the brakes starting from passenger rear etc etc. twice. No dice. I didnt bench bleed the cylinder as i dont have a vice or a good place to put it level. I had my father to apply pressure on the brake pedal and popped the lines loose on the master then tightened them. did that a few times. then moved toward the rear,front etc. Ideas?

04-06-2014, 07:11 PM	#2
old Rusty C10 Robert Olson Transport Join Date: Oct 2002 Location: recent transplant to NC USA Posts: 20,300	Re: cant get any brake pedal. gotta bench bleed the master they will hold air if you don't.... also get a vacuum bleeder and use that on the wheel cylinders __________________ Bob 1951 International running on a squarebody chassis "If a man's worth is judged by the people he associates himself with, then i am the richest man in the world knowing some of the fine people of this board" http://67-72chevytrucks.com/vboard/a...t.php?f=25&a=9 (you can review the site rules here!) PM Me for your vehicle/parts hauling needs in the North East US or see my Facebook page Robert Olson Transport Live each day to the fullest.. you never know when fate is going to pull the rug out from under you... I hate cancer!!

04-06-2014, 07:13 PM	#3
kalbert Registered User Join Date: Jun 2012 Location: Minnesota Posts: 509	Re: cant get any brake pedal. You have to bench bleed the master. The pedal and linkage hasn't got enough travel to completely bottom out the pistons.



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