booster no worky - The 1947 - Present Chevrolet & GMC Truck Message Board Network

SWINGSAX68 · 09-09-2003, 09:32 AM

So my booster offers no power assistance at all. The rod to the booster seems short, was there a difference in length between 67-68 and 69-72 brake pedal assemblies??? I also came to understand that adjustments can be made to the rod in the booster. How is that accomplished.

Funny thing is the booster seems to have no vacum leak, yet it offers no assistance, as I depress the pedal it seems like i have to push through it to engage the brakes. It's gotta be the booster not functioning properly......any ideas guys???? Can I get a rebuilt booster and use mine as a core at a parts store???? How much???
Thanks guys...I haven't been driving my truck since I atttempted this deal....and I haven't bled the wheel cylinders yet, I'll see if this works out, if not I'm switching to manual brakes until I can figure out this problem.

smokekiki · 09-09-2003, 11:51 AM

Start your truck and let it run a couple min.Shut it off and let it set 5min.Pull the vac line off at the booster.You should hear it suck in air if it is good.If not,replace.The rod is threaded on one end for adjustment.If you had the brake lines open,you need to get all the air out,or no brakes!Sounds like a good time to replace all the brake fluid.

09-09-2003, 09:32 AM	#1
SWINGSAX68 Now the others dig........ Join Date: May 2002 Location: San Antonio, TX Posts: 1,520	booster no worky So my booster offers no power assistance at all. The rod to the booster seems short, was there a difference in length between 67-68 and 69-72 brake pedal assemblies??? I also came to understand that adjustments can be made to the rod in the booster. How is that accomplished. Funny thing is the booster seems to have no vacum leak, yet it offers no assistance, as I depress the pedal it seems like i have to push through it to engage the brakes. It's gotta be the booster not functioning properly......any ideas guys???? Can I get a rebuilt booster and use mine as a core at a parts store???? How much??? Thanks guys...I haven't been driving my truck since I atttempted this deal....and I haven't bled the wheel cylinders yet, I'll see if this works out, if not I'm switching to manual brakes until I can figure out this problem. __________________ 68 Chevy C10 Stepside Black Primer 78 GMC Longbed White 09 Chevy Silverado Shortbed Granite Blue *LOOKING FOR A 67 4 DOOR IMPALA!!!Just like Sam and Dean Winchester!! 'Cause Mustangs are for p^#$ and you can fit a body in the trunk of a 67 Impala* MEMBER OF THE DRUM BRAKE CLUB Bachelor of Music in Jazz Studies Texas State University-San Marcos, TX Certified Music Educator I hope Mom is up there watching and being my Guardian Angel "I've got a fever.....and the only prescription.....IS MORE COW BELL" -The Legendary: Bruce Dickenson "F#$@ 'em up!!!!!!" -The Legendary: Rogelio Escobar TRUCKY LINKS** http://67-72chevytrucks.com/vboard/s...d.php?t=457750 http://67-72chevytrucks.com/vboard/s...d.php?t=461184 http://67-72chevytrucks.com/vboard/s...d.php?t=472848 http://67-72chevytrucks.com/vboard/s...d.php?t=417541 http://67-72chevytrucks.com/vboard/s...d.php?t=477788

09-09-2003, 11:51 AM	#2
smokekiki Mike Join Date: Jan 2003 Location: west chester pa Posts: 2,473	Start your truck and let it run a couple min.Shut it off and let it set 5min.Pull the vac line off at the booster.You should hear it suck in air if it is good.If not,replace.The rod is threaded on one end for adjustment.If you had the brake lines open,you need to get all the air out,or no brakes!Sounds like a good time to replace all the brake fluid. __________________ 70'c/10, 71 suburban4x4 402bb, 72suburban 4/6 drop, 72k/5 4x4 blazer 4" lift 35 tires

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