73GALIATH
Forum Newbie
Posts: 8
Reg: 06-23-12
|
06-23-12 09:36 PM - Post#2240654
Im new at this i found out about this site from a old diehard anyway Ive got a 73 gmc sierra grand 2500 4x4 cant drive it because of no brake power ive bleed them to the point of putting a new bottle in i push on the pedal and get a his as if air is leaking out inside the cab im not real knowlagdeable about things of the truck i feel that if i replace the brake booster it will stop the hissing and give me the ability to be able to drive my truck um the question is will it fix my brake problem or do i have other problems
|
|
 gchemist
Senior Chevytalk Moderator
Posts: 20822
Loc: Austin, TX 78748
Reg: 05-09-00
|
06-24-12 04:38 AM - Post#2240677
In response to 73GALIATH
Welcome to the site. It's nice to an first model square running on the road. Bonus points for being 4X4.
Read this page on how to test the power booster.
http://www.73-87.com/7387garage/chassis_su spension...
Read this on how to bleed brakes.
http://www.73-87.com/7387garage/chassis_su spension...
If you hear hissing, the brake boost diaphram is probably broken.
'83 Silverardo XST - ZZ4 powered
'96 GMC Jimmy LS |
|
 Vaughn
"11th Year" Gold Supporting Member
Posts: 13552
Loc: Colorado Springs, CO
Reg: 08-08-04
|
06-24-12 12:42 PM - Post#2240800
In response to gchemist
If you are getting no power assist (pedal is overly hard) - then the power booster is at fault.
If the pedal goes to the floor, the master cylinder is bad. Replace it.
|
73GALIATH
Forum Newbie
Posts: 8
Reg: 06-23-12
|
06-24-12 09:20 PM - Post#2241006
In response to Vaughn
i never even gave the master cylynder a second thought um ok with the truck running i pump it and still down to the floor with it off it feels mushy but holds ok anyway just wanted to say thankyou
|
73GALIATH
Forum Newbie
Posts: 8
Reg: 06-23-12
|
06-24-12 09:28 PM - Post#2241008
In response to gchemist
i just click on those two sites that you mentioned and printed them ill read through them tomorrow but thank you for your input and help
|
|
Gain extra benefits by becoming a Supporting Member 
drtyler (4)
