K-20 front drum brake dragging - The 1947 - Present Chevrolet & GMC Truck Message Board Network

prg machine · 09-22-2009, 08:14 PM

This just started happening. I did the front wheel brakes about 20, 000 miles ago and all fine. recently the front left is tightening up and dragging getting real hot. I backed it off a bunch and will see what happens

what could cause the brake to adjust too tight ( it has the self adjusters.)

vectorit · 09-22-2009, 10:14 PM

You could have either a weak or broken adjuster spring, or any of the other springs could be weak causing a chain reaction to the self adjuster being too sensitive?

Also, the spreader star wheel teeth may have rounded off to the point where the adjuster arm can turn it tighter easier than it should.

FRENCHBLUE72 · 09-22-2009, 10:23 PM

You could also upgrade to disk? If your looking p.m. me

Blazer1970 · 09-23-2009, 06:09 AM

Also could be a bad wheel cylinder or the hose to that side is swelled shut inside.

09-22-2009, 08:14 PM	#1
prg machine Registered User Join Date: Jun 2007 Location: oregon Posts: 1,069	K-20 front drum brake dragging This just started happening. I did the front wheel brakes about 20, 000 miles ago and all fine. recently the front left is tightening up and dragging getting real hot. I backed it off a bunch and will see what happens what could cause the brake to adjust too tight ( it has the self adjusters.) __________________ 69 K-20 cloned to a 67 with front clip and some other stuff. 383 .040 over Crane roller cam lifters and rockers ,1.6 intake ratio, Open chamber heads, 9.5-1 compression ratio, 2.02 intake valves , Edelbrock performer Air Gap manifold Carter AFB performer 750cfm, MSD ignition, SM465 NP205 4.10 gears:

09-22-2009, 10:14 PM	#2
vectorit What? Join Date: Jun 2007 Location: Southern California Posts: 7,617	Re: K-20 front drum brake dragging You could have either a weak or broken adjuster spring, or any of the other springs could be weak causing a chain reaction to the self adjuster being too sensitive? Also, the spreader star wheel teeth may have rounded off to the point where the adjuster arm can turn it tighter easier than it should. __________________ Chris 1968 K20 Suburban 1972 K10 LWB PU

09-22-2009, 10:23 PM	#3
FRENCHBLUE72 PROJECT 7DEUCE Join Date: Dec 2002 Location: GRANTS PASS OR Posts: 21,608	Re: K-20 front drum brake dragging You could also upgrade to disk? If your looking p.m. me __________________ GO BIG GREEN GO DUCKS MEMBER #6377 72 k-5 daily driver 6'' lift 35'' 350-350-205 slowly getting rust free. Project "7DEUCE" check out my build http://67-72chevytrucks.com/vboard/s...d.php?t=267665 Tim Powell..R.I.P EastSideLowlife..... R.I.P..

09-23-2009, 06:09 AM	#4
Blazer1970 Registered User Join Date: Dec 1999 Location: Old Mission, MI, USA Posts: 2,510	Re: K-20 front drum brake dragging Also could be a bad wheel cylinder or the hose to that side is swelled shut inside. __________________ Tim



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