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Author Topic: Question for Spring Brake Experts on Installation Parts  (Read 2803 times)
Dreamscape
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« on: October 30, 2008, 05:51:48 PM »

OK, here is what I think I need. Please tell me if I'm on the right track. This has been a great learning experience for me, and I'm glad for it. Still have never received the documentation on changing from DD-3 to Spring Brake.

1 ea. Bendix PP-DC Park Control Vavle

http://www.bendixvrc.com/itemDisplay.as ... entID=4816

1 ea. Bendix QR-N Quick Release Valve

http://www.bendixvrc.com/itemDisplay.as ... entID=4977

1 ea. Bendix SR-1 Spring Brake Valve

http://www.bendixvrc.com/itemDisplay.as ... entID=4069

2 ea. MGM 3030 Piggy Back Spring Brake

http://www.anythingtruck.com/Merchant2/ ... 60-3430051

I should be able to get all of this for less than the cost of one DD-3 rebuilt.

I will use the DOT nylon tubing and new fittings where necessary.

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NJT 5573
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« Reply #1 on: October 30, 2008, 07:19:39 PM »

Paul, I didn't find a schematic that used your exact combination but those are the most common, basic, easy to install and replace valves. They are all common to trucking and available anywhere in the country. I'm sure this set up is more serviceable than what you have now and alot cheaper to keep on the road. I think all your bases are covered. The emergency low air application is built in, that is the cheapest QR valve, the best Park Valve for a bus and the MGM cans are fine if they don't say China on them.
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« Reply #2 on: October 31, 2008, 12:16:01 AM »

Paul I don't know any thing about the DD-3 brakes but i know it can be a job replacing brakes.  I am still working on taking the wedge brakes off of one of my trucks and replaceing them with S-Cam Spring brakes.  It is not all that hard if you can find the parts that don't wear.

Hopefully the DD-3 are some what like the S-Cam and you will not have to change the backing plates and cam holders like I had to.

Good luke, wish I were closer I would drop by and lend a hand when I could.

Bob
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1968 GM Bus of unknown model 6V53 engine (aftermarket) converted with house hold items.

Had small engine fire and had no 12 volt system at time of purchase. 
Coach is all 110 w 14KW diesel genrator
Dreamscape
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« Reply #3 on: October 31, 2008, 05:04:21 AM »

Thanks Guys,

I have spent the last three weeks or more getting educated on this stuff. I now know how air brakes work! Wink

I don't mind taking the time to do the research as this has taught me a lot about a very important subject.

I just wanted to make sure I had all of my ducks in a row and didn't leave any wandering around! Grin

Thanks for the offer Bob, I'm sure you have plenty to do without lending me a hand Grin. Maybe we'll sit around a campfire one day and discuss all of our adventures. Wink

Paul
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« Reply #4 on: October 31, 2008, 06:41:33 AM »

Dreamscape...right off hand I believe you have gotten the list correct. It AM in morning and busy now till in the evening, so not able to check it but...the Lord willing....I will check it out.

Good that you had read up about air brake system. It take time to learn the puzzle and the whys.

Take Care, Gerald
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makemineatwostroke
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« Reply #5 on: October 31, 2008, 07:12:51 AM »

If he doesn't have a dual air system on his bus some of the valves are not needed and also if he will check on Wabco valves he won't need as many some serve 2 functions and are cheaper. people get hung up to much on Bendix there are others just as good if not better  have a great day
« Last Edit: October 31, 2008, 07:50:29 AM by makemineatwostroke » Logged
Dreamscape
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« Reply #6 on: October 31, 2008, 07:36:38 AM »

I'm using Bendix as an example. The pdf files are a great read. They are the only site I could read and compare as their notes are very thorough. I will use whatever brand I can find the cheapest and of course reliable. Wabco right now is my choice.
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makemineatwostroke
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« Reply #7 on: October 31, 2008, 07:49:39 AM »

Good for you Paul, Wabco makes good products and so does Haldex/ Midland at a better price I have a Wabco air dryer and it cost less than 1/2 the price of a Bendix AD-9 to service          have a great day
« Last Edit: October 31, 2008, 07:55:30 AM by makemineatwostroke » Logged
Dreamscape
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« Reply #8 on: November 08, 2008, 07:26:37 AM »

This is what I ended up getting. I did not get Bendix as I could find better prices on the exact same valve from my favorite place, eBay. Wink The Bendix links are for illustration purposes only.

1 ea. SR-1 Spring Brake Valve

http://www.bendixvrc.com/itemDisplay.as ... entID=4069

1 ea. E-6 Teadle Valve

http://www.bendixvrc.com/itemDisplay.asp?documentID=4741

1 ea. QR-1C Quick Release with Double Check Valve, for use with Spring Brakes giving an anti-compounding feature in case the service and park valve are used at the same time.

http://www.bendixvrc.com/itemDisplay.asp?documentID=4571

2 ea. 30/30 Spring Brake Chambers

1 ea. two-way check valve between service and park tank.

I will use my PP-2 Emergency Park Valve, as it will work just fine.

I am very fortunate to have two air brake experts giving me guidance in this conversion process, as their expertise is appreciated and necessary for a "Job Well Done". Wink

HTH and FWIW,

Paul





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