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Fixing the old truck

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Joined: Jun 2007
Posts: 12
C
New Guy
New Guy
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Joined: Jun 2007
Posts: 12
Hello All,

I have a 1939 JC 1/2 ton and am trying to get the part number of any of the several speed bleeders made. I searched, but only found that information for the later trucks and I do not know if it is the same. If anyone knows the size and thread pitch, that could work too (is it 3/8 x 24?). I appreciate your help as I am trying to avoid having to go to the parts store or online order a part while the truck is on stands.

Thanks again,
j

Last edited by Crazy j; 02/25/2016 5:27 AM.

'39 1/2 ton
Joined: Dec 2011
Posts: 19
S
New Guy
New Guy
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Posts: 19
Would suggest taking one of your old bleeders to your favorite auto parts store and let them measure the thread, so you get the right speed bleeder.

Joined: May 2001
Posts: 7,440
Extreme Gabster
Extreme Gabster
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..and when he gets home he'll have brake fluid all over the shop floor.


"It's just a phase. He'll grow out of it." Mama, 1964

1956 Chevy 1/2-ton 3100
1953 Chevy 6100 "The Yard dog"
1954 GMC Suburban Now with a new proud owner.
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'Bolter
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not if he uses a tray underneath



1949 Dodge Coronet
1955 2nd Chevy 4400 1.5 ton
1955 2nd Chevy 3100 1/2 ton
1955 2nd Chevy 3100 1/2 ton
1957 Chevy 5400 LCF 2 ton
1966 Dodge D100 Sweptline
1968 Chevy P20 stepvan
1969 GMC LWB pickup
1972 GMC Sprint
1974 CP30 shorty bus

There are three things that I've learned never discuss with people: religion, politics, and the Great Pumpkin.----Linus Van Pelt
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Joined: Jun 2007
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C
New Guy
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Thanks for the responses, guys. I can remove the bleeder screw and check the size and thread pitch in my garage, but I am hoping just to get the right parts and do the job without interruption to go buy parts. Leaking brake fluid would be annoying too, though I suppose it'll be leaking from the wheel cylinder when I change the bleeder screws, so . . .

Last edited by Crazy j; 02/24/2016 9:08 AM.

'39 1/2 ton

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