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#1461589 Sat Aug 06 2022 03:12 PM
Joined: Aug 2022
Posts: 2
D
Moderated
I am new to the forum, and have been searching through the threads for part numbers for front and rear wheel cylinders. I have a leak in the drivers rear. Also, does the 2 speed dual rear axle require two cylinders per side?

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Joined: Dec 2015
Posts: 2,328
Big Bolt Forum Moderator
welcome to the site!! that is a sharp looking truck!
I believe the 59 is the same as my 58. Yes, 2 wheel cylinders per side on the rear. There were 2 different types, one with solid rubber cups, the other one, the cups are actually rings that fit over the piston. I don't have cylinder part numbers, I just put kits in mine. You should be able to get the kits and/or cylinders at Napa. Rock Auto may also have them.


Mike

1955 Chevy 6400 ex-flatbed (no bed now!)
In the Stovebolt Gallery [stovebolt.com]


1958 Chevy 6400 flatbed W/dump
In the Stovebolt Gallery [stovebolt.com]

1959 Chevy Suburban Owned for almost 20 years, Daily Driver -- sold May 2016
In the Stovebolt Gallery [stovebolt.com]

Sufficient unto the day is the evil thereof
Joined: Aug 2022
Posts: 2
D
Moderated
Thanks! It’s my work in progress, want re do the brake lines as well.

Joined: Dec 2015
Posts: 2,328
Big Bolt Forum Moderator
yes, definitely replace all the hoses and steel lines, as they rot/rust from the inside out.


Mike

1955 Chevy 6400 ex-flatbed (no bed now!)
In the Stovebolt Gallery [stovebolt.com]


1958 Chevy 6400 flatbed W/dump
In the Stovebolt Gallery [stovebolt.com]

1959 Chevy Suburban Owned for almost 20 years, Daily Driver -- sold May 2016
In the Stovebolt Gallery [stovebolt.com]

Sufficient unto the day is the evil thereof
Joined: Aug 2022
Posts: 1
M
Moderated
Nice Truck. 👍🏼
I have been looking for brake part numbers also. I’m redoing my brakes, wheel cylinders are next.
69Cuda is there a part number to the Napa cylinder kit?

Joined: Dec 2015
Posts: 2,328
Big Bolt Forum Moderator
Napa kits are shown below. For the rear wheel cylinders, there are 2 types, one with a solid rubber cup, the other one has a ring type cup.
Mine were the ring type.
rear wheel cylinder kit 1 1/2 bore, ring type UP 147
master cylinder kit 1 1/4" UP 33
front wheel cylinder kit 7/8" UP 129


Mike

1955 Chevy 6400 ex-flatbed (no bed now!)
In the Stovebolt Gallery [stovebolt.com]


1958 Chevy 6400 flatbed W/dump
In the Stovebolt Gallery [stovebolt.com]

1959 Chevy Suburban Owned for almost 20 years, Daily Driver -- sold May 2016
In the Stovebolt Gallery [stovebolt.com]

Sufficient unto the day is the evil thereof
Joined: Mar 2022
Posts: 4
S
Moderated
Thought I would let ya'll know some stuff I have learned while rebuilding the brakes on my recently purchased/trying to bring back to life '59 c60 viking grain truck that was last tagged 21 years ago. In working on the brakes I found a master cylinder rebuild kit for 1"1/4 bore at NAPA part number UP33 and a reman master cylinder of the same size bore is part number P21698. It fit perfectly and was about $20 bucks more than the kit. And wonder of wonders, they had one in stock and do request a core exchange.


1959 C60 viking grain bed
Joined: Feb 2011
Posts: 1,166
T
'Bolter
Question has anyone converted to a dual system type master cylinder on these larger trucks? Reason I ask is I worked with a fellow that had I think a 2 ton 57 Chev with a box on back for his vegetable, fruit business, broke a brake line going down a steep hill and crashed at the bottom into a building. I like pure stock old trucks but for driving one I'd want a dual system because of that story. So will the bolt in the stock position after market units work on the larger trucks, Ok?

Last edited by Truckrolet; Mon Oct 03 2022 05:53 AM.

Kicking self for selling off my Taskforce trucks.
Still looking for an LCF or conventional big bolt in decent shape.


As of 10-26-2022, A 55.2 Taskforce long bed now the work begins
Joined: Feb 2016
Posts: 765
7
'Bolter
If your big bolt has a divorced brake booster then a dual master is going to dictate an all new plumbing design. My '57 has the master mounted on the frame, from there a 1/4" line goes to the Hydro-Vac mounted further back on the frame, from the Hydro-vac a 1/4" goes to a tee and then front and rear.


1957 Chevrolet 5700 LCF 283 SM420 single speed rear, 1955 IH 300U T/A, 1978 Corvette 350 auto, 1978 Yamaha DT175, 1999 Harley Davidson Softail Fat Boy
Joined: Feb 2004
Posts: 25,315
H
Kettle Custodian (pot stirrer)
I remember some Class A motorhomes that had a dual line master cylinder and two small hydrovac units. Front and rear brake systems were independent, but they required a pretty complex plumbing system. It would probably be more effective to keep the original system up to "as new" condition, and fit the driveshaft with a big manual disc brake setup. I don't remember the name of the company, but there is an aftermarket driveline brake that has enough power to lock up the rear wheels on a loaded truck.
Jerry


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Moderated by  69Cuda, Grigg 

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