Air Brake trolley hand brake control valve rebuild kits FS

Military Trucks 2 1/2 ton and greater, Wanted, For Sale (NO AUCTION or EBAY), and Knowledge Base
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dlevy
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Air Brake trolley hand brake control valve rebuild kits FS

Post by dlevy » Mon Mar 20, 2017 3:23 pm

Hi All,

I am looking for the hand air brake valve that mounts on the steering column of the Diamond T. That or a repair kit that has the seals.

Has anyone had other options for repairing these?

I understand these the same on the Ward LaFrance Wrecker, Pacific Dragon Wagon, High Speed Tractor, essentially any MV with air brakes (or uses it for a trailer as with the HST).

Thanks,
Dave
Attachments
Diamond T Hand Valve - smaller.jpg
Diamond T Hand Valve - smaller.jpg (83.76 KiB) Viewed 382 times
Last edited by dlevy on Sat May 27, 2017 7:56 pm, edited 4 times in total.

CplDixon
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Re: WTB Diamond T trolley hand brake valve or repair kit

Post by CplDixon » Sun Mar 26, 2017 7:55 am

Theses hand brake valve are the same for ALL US WW2 TRUCKS that got air brake system.. WLF,B666,International,federal,Autocar,pacific,mack, all of the us ww2 trucks that are fitted with air brake system..

CplDixon ;)

dlevy
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Re: WTB Diamond T trolley hand brake valve or repair kit

Post by dlevy » Sun Mar 26, 2017 11:45 am

Thanks. Good to know.

What have people been doing to get them working again?

There are a couple rubber parts inside that get all dried out.

Dave

dlevy
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Re: WTB Air Brake trolley hand brake control valve or repair

Post by dlevy » Tue Apr 04, 2017 2:41 pm

Hi,

With all the WWII MV's out there with air brakes using this valve someone must have a replacement kit or way to rebuild them.

Any help appreciated!

Thanks
Dave

kw573
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Re: WTB Air Brake trolley hand brake control valve or repair

Post by kw573 » Wed Apr 05, 2017 12:56 pm

Dave,

I hope you are not being ignored, rather that you have asked a question no-one has the answer for.

This valve is the only one that I have not had apart on my DT969. Here is the exploded view from the parts manual . . . .

Image


. . . . . and the listing for the kit.

Image

The 'Ball' is item G
The 'Cup; is item U
The 'Screw' is item B
The 'Spring' is item F
The 'Spring' is item AB
The 'Valve' is item X

Hmmm, the kit does not seem to have any rubber parts except maybe the Cup. Strange.

It is not much, but maybe a European dealer may have something to help.

Please let us know what you end up doing.

Sam.
1942 Script GPW (Daily driver).
Willys MB.
2 x Diamond T 969.
Kenworth M1A1 Heavy Wrecker.
3ton GS (Blitz) Trailer.
150gal water tanker trailer.


dlevy
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Re: WTB Air Brake trolley hand brake control valve or repair

Post by dlevy » Sat May 27, 2017 7:35 pm

Sam, thanks for responding and offering the info. I appreciate it.

So my solution to get the trolley hand brake controls working again were to make my own rebuild kits.

I had all the rubber pieces molded using an NOS kit as a template. There are 3 rubber parts in the valve.

The company machined molds from the original parts and molded brand new rubber pieces.

I had new springs made as well.

The sealing surface on the plunger was pitted on 2 of my valves so I had them welded up and then I turned them on my lathe to spec.

The new hand valves work great!

The truck also has double check shuttle valves, so I made new seals for them too.

I made extra pieces so I have some rebuild kits available if anyone needs them.

Thanks,
Dave
Attachments
20170428_121539_1494527145573_resized.jpg
Two of the parts in the molds (the black parts)
20170428_121539_1494527145573_resized.jpg (120.56 KiB) Viewed 168 times
20170428_121611_1494527144653_resized.jpg
Newly molded part
20170428_121611_1494527144653_resized.jpg (150.58 KiB) Viewed 168 times
17- Kit, Service, Hand Air Brake Control A.jpg
NOS Kit
17- Kit, Service, Hand Air Brake Control A.jpg (161.17 KiB) Viewed 168 times
Last edited by dlevy on Sat May 27, 2017 7:53 pm, edited 2 times in total.

dlevy
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Re: WTB Air Brake trolley hand brake control valve or repair

Post by dlevy » Sat May 27, 2017 7:42 pm

Here are some pictures of the valves with new rubber and spring going back together.

There is a special graphite lube (as per the TM) on the seal so it looks irregular in the picture.

Dave
Attachments
P1100380.JPG
P1100380.JPG (171.4 KiB) Viewed 168 times
P1100383.JPG
P1100383.JPG (185.94 KiB) Viewed 168 times
P1100396.JPG
P1100396.JPG (203.04 KiB) Viewed 168 times

dlevy
Sergeant Major of the Gee
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Re: Air Brake trolley hand brake control valve rebuild

Post by dlevy » Sat May 27, 2017 7:48 pm

Here is the double check / shuttle valve.

Dave
Attachments
P1090486.JPG
P1090486.JPG (160.31 KiB) Viewed 167 times
P1070309.JPG
P1070309.JPG (164.27 KiB) Viewed 167 times

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