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Fixing the old truck

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Joined: Jun 2001
Posts: 775
T
Bondo Artiste
Bondo Artiste
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Joined: Jun 2001
Posts: 775
Hello everyone. After a long hard winter my old truck is ready to roll and get tuned up. I noticed when I was driving late Friday night when the brakes were applied firmly the truck drifted to the right and I had to correct it by turning the steering wheel left to keep straight. I am not sure what the cause might be. I put the truck up on my lift and all looks good, no leaks and the fluid is clean. Any advice would be great and thanks in advance for your help.

Phillip
1951 GMC 9300 Canadian built 1/2 ton
Centreville Va


~ Phillip
1949 GMC Suburban - 10 year project
1952 Pontiac Chieftain Convertible straight 8 hydramatic
1945 GMC half ton truck - Driver
1946 Chevy COE - Might restore one day...
1959 GMC Half ton long bed NAPCO
Joined: Jul 2001
Posts: 3,887
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Cruising in the Passing Lane
Cruising in the Passing Lane
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Joined: Jul 2001
Posts: 3,887
I'd suspect brake adjustment right off, but it could also be a bit of condensation [w/ maybe a wee bit of fluid film] has "glazed" things - I'd "ride" the brakes a bit a few times to see if they'll clean up w/ the heat, then if adjustment don't fix it, pull the drums and take a look - if there's no real leak, maybe a little scuff w/ sandpaper would fix it up

Bill


Moved over to the Passing Lane

"When we tug a single thing in nature we find it attached to the rest of the world" John Muir
"When we tug a single thing on an old truck, we find it falls off" me
Some TF series details & TF heater pics & Rust-a-holics Unanimous parking lot
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H
'Bolter
'Bolter
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Joined: Jul 2002
Posts: 385
I had the same problem, turned out to be a stuck rear shoe had glazed and was providing zero braking power. Pull the drums and see if everything moves like it should, check for glazing and leaks. Readjustment is mandatory, even if replacement is not required. Scuff up the shoes a bit even if they don't look shiny.


1955 First Series GMC 250 1-Ton Panel
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Shop Shark
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Joined: Apr 2002
Posts: 1,571
You could have a rubber flex line with a weak spot. I've had a few cars with pulls that were fixed with new flex lines. Now I use braided stainless lines on everything. They never wear out, and have incredible pedal feel.


Get a REAL truck, get a GMC! www.oldgmctrucks.com
1954 GMC De Luxe COE
Joined: Jan 2001
Posts: 198
A
Member
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Joined: Jan 2001
Posts: 198
Three things to check, oil contamination, brake fluid/ wheel bearing grease, Incorrect brake shoe adjustments, and the third if you have an IFS supension check the right hand side of the truck for worn parts (inner a arm bushings, tie rod idler arm etc), if it a solid front axle check the spring eye bushings

Joined: Feb 2000
Posts: 960
B
'Bolter
'Bolter
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Joined: Feb 2000
Posts: 960
One other thing to check is the air preasure in you front tires make sure that they are booth the same.


Brian Moore
1949 3100 5 window Deluxe
"Today is better than yesterday, but not as good as tomorrow"

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