The 1947 - Present Chevrolet & GMC Truck Message Board Network







Register or Log In To remove these advertisements.

Go Back   The 1947 - Present Chevrolet & GMC Truck Message Board Network > 47 - Current classic GM Trucks > The 1967 - 1972 Chevrolet & GMC Pickups Message Board

Web 67-72chevytrucks.com


Reply
 
Thread Tools Display Modes
Old 04-28-2003, 11:16 AM   #1
krue
Designated A-hole!
 
krue's Avatar
 
Join Date: Mar 2003
Location: South Mississippi
Posts: 36,450
Exclamation Whooaa Truck!!!!

I put a power booster on my 70 GMC with drums all around. I get about four inches of pedal and then no more. It stops good until I run out of pedal. I've replaced all wheel cylinders and shoes. It doesn't feel like air, the pedal gets rock hard at four inches.

I plan on bleeding them again, but was hoping for some suggestions!
__________________
"If it ain't broke, fix it 'til it is!"
Being stupid ain't illegal.

We're Still Debt Free Except for the House!!!
www.daveramsey.com

70 GMC SWB Stepside project "Green Booger" soon to be 6.0l/4l80e
93 S-10 "Poppaw's Truck"
krue is offline   Reply With Quote
Old 04-28-2003, 11:23 AM   #2
rangernsk
Registered User
 
Join Date: Dec 2002
Location: Warrensburg MO
Posts: 143
Do you have the correct proportioning valve?
rangernsk is offline   Reply With Quote
Old 04-28-2003, 11:30 AM   #3
stllookn
Saving 1 truck at a time!
 
stllookn's Avatar
 
Join Date: Aug 2001
Location: Kent, WA
Posts: 6,465
Did you check the adjustment of the actuator rod between the booster and the MC? I know the adjustment is critical.
__________________
'68 C20 Longhorn 50th Anniversary 400/TH400
'68 C20 Longhorn 50th Anniversary 468/TH400w/buckets
'72 C20 Halfhorn (Longhorn w/o cab and front clip)
'69 Flxible Cruiser (look up ugly in the dictionary)
stllookn is offline   Reply With Quote
Old 04-28-2003, 02:35 PM   #4
krue
Designated A-hole!
 
krue's Avatar
 
Join Date: Mar 2003
Location: South Mississippi
Posts: 36,450
I didn't adjust between booster and m/c, I'll try that next.
__________________
"If it ain't broke, fix it 'til it is!"
Being stupid ain't illegal.

We're Still Debt Free Except for the House!!!
www.daveramsey.com

70 GMC SWB Stepside project "Green Booger" soon to be 6.0l/4l80e
93 S-10 "Poppaw's Truck"
krue is offline   Reply With Quote
Old 04-28-2003, 03:38 PM   #5
krue
Designated A-hole!
 
krue's Avatar
 
Join Date: Mar 2003
Location: South Mississippi
Posts: 36,450
Gotta luv the smell of tire smoke....if only when your slamming on brakes! At least I can stop now. Roadworthy (using that loosely!) again! Thanx stllookn for the tip. Now I gotta adjust my brake pedal back down, but at least I can stop now without getting a leg workout!
__________________
"If it ain't broke, fix it 'til it is!"
Being stupid ain't illegal.

We're Still Debt Free Except for the House!!!
www.daveramsey.com

70 GMC SWB Stepside project "Green Booger" soon to be 6.0l/4l80e
93 S-10 "Poppaw's Truck"
krue is offline   Reply With Quote
Reply

Bookmarks


Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -4. The time now is 02:26 PM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
Copyright 1997-2022 67-72chevytrucks.com