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Fixing the old truck

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Joined: Sep 2010
Posts: 51
C
Wrench Fetcher
Wrench Fetcher
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Joined: Sep 2010
Posts: 51
I recently bought a 1955 second that has been sitting since the mid 80's. I have gotten modern rims and radials. Now I need to replace the entire brake system. I am finding a mix of availability for the wheel cylinders. It is a two wheel drive with 12" drum 8 lug 3600 series truck that needs a fully new brake system but the budget forces me to keep it original. The wheel cylinders on the truck may not be correct. The fronts have the hose come out straight. The rear lines come out at an angle but I thought those cylinders (in the rear) were for the 3100 trucks. Can anyone set me straight. If you can provide me with a picture or part number and supplier - It would make my month!
Thanks


Love the classics!
1954 3100
1965 Mustang vert
Joined: Nov 2005
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3B Offline
'Bolter
'Bolter
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Hy carfolite, the rear wheel cylinders are Raybestos p/n WC18009 [Rock Auto $20.67] the port is straight out the back, but the thread is 7/16" X 20 t.p.i. which is for a banjo bolt/fitting I believe, hope that helps.

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C
Wrench Fetcher
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3B - I took a look at the part you listed. I have to replace the rear brake lines so I guess I could use a straight or angled fitting. They seem to be a 1 1/8" for any 3/4 ton app. I did also see a possible match for just $7.00/ Could the mounting points be different?


Love the classics!
1954 3100
1965 Mustang vert
Joined: Nov 2005
Posts: 6,061
3
3B Offline
'Bolter
'Bolter
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Posts: 6,061
Hy carfolite, without you giving me a part number, I can't even hazard a guess how it would be different from the wheel cylinder that is designed for the application. If you want to redesign your brake system so you can use the cheaper parts you found, then good luck to you. In your original post you said you wanted to keep the truck "original", has the cost of the correct parts changed that intention?

Joined: Feb 2003
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H
Shop Shark
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Joined: Feb 2003
Posts: 452
Go for the new, proper cylinders and lines. The only mod you might make is to put an adapter in to convert from banjo fittings to flare fittings. I found these by accident at NAPA while hunting for fittings for a dual-circuit master that I installed in my 49 3600. Sorry, I don't have the part numbers.
If you are going to change all the lines, it would be a good time to convert to a dual master, or at least amend the line routing to make the change easier when you do.


Current fleet (subject to change w/o notice)
\'49 GMC 3/4-Ton , 60 Austin Healey Frog-eye Sprite (some assembly required), 2011 Dodge Avenger, 2015 Jeep Cherokee. No, they don't all run.
My other ride is a (B737)no, (B767)no, A320.... Update... was Embraer E190, now Boeing B787.

Knowledge is a wonderful thing, but ignorance means you don't know you can't do something.
Joined: Jan 2011
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D
Wrench Fetcher
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the cylinders that are angled are usually for the fronts so when turning it gives more clearance for the lines (hoses). as for the interchangability of cylinders, as long as you can find the correct spacing on mounting bolts, the only real difference in the cylinders is the diameter/size of the pistons. larger will obviously need more pressure to activate and a heavier spring to return them. suprisingly orielly auto parts has a decent stock of in house cylinders that you can compare to yours in hand for better reference. buy it from somewhere else though. -DVZ

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C
Wrench Fetcher
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Posts: 51
Sorry - What I meant by 'original' was that it is not in my budget to go to a disc brake system at this time.


Love the classics!
1954 3100
1965 Mustang vert

Moderated by  Gdads51 

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