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I've looked at that kit from Meritor and yes they are extremely expensive ! It would cost more then my truck is worth and then some ! Plus all the fabrication for our older axles. I would go with one of the kits from Boyce or try what several members here have done first. The transit agency had...

The federal mandate for yearly replacement is for transit and government vehicles only, though if you read the document carefully you will see that no air-can can pass the federal standard for years. The slightest leak or lack of pressure is cause for replacement and or side-lining of your...

Since I still have my "Class A" CDL , which means I can drive any over the road vehicle except certain vehicles that carry Nuclear waste products, I need to know the Federal Laws. Since the Class A,B,C style license was introduced years ago every state in the union has gone to it and every other...

Now that looks real nice !

Yes, passenger and over the road Semi-trucks, and dump trucks. Basically any big rig that can cause severe harm to the general public if they have a brake failure. Considering the sometimes lack of quality control these diaphragms can have, it's a wonder they don't require them replaced every...

We are talking about the diaphragms, not the whole can here.

According to federal regulations they do need to be replaced at least once a year, sooner if you have high mileage. I was a safety inspector and can post the regulations when I get home.

One thing you should know about brake cans is the diaphragms need to be replaced every six months to a year. They also can just tear out of the blue. I personally would not trust my life to just two brake diaphragms.

Yes ! That is the type of valve I was talking about. There are several makes out there. Didn't know how much they cost though !

The switch you would need is the same one the big trucks and buses use that have "brakes-by-wire" application. It has a "varistor" inside that puts more current with more pressure. Of course you would then need the relay valve that is also variable. Actually thinking about this and the cost, you...

Patracy, you can have a "hydroBoost" system and activate the air brakes on a trailer with a "high pressure activated electrical switch" that then activates a "Relay valve" (like a R-14) that then supplies the air to the trailer.

Is this what your referring to for the master cylinder ?

I have a pressure gauge on my Deuce and the top brake pressure I ever had was 850 PSI. That was standing on the pedal. The average pressure was 800 PSI.

I really don't see any advantage to going this route. My "AirForce" deuce with the dual master cylinder and dual airpacks works great. The master cylinder is still available for purchase and the airpacks are still rebuildable. Now you can just keep the dual master cylinder and go with a more...

I take it there is an "adversarial" attitude towards the State Patrol on the East Coast then. Out here in Washington State we look open the State Patrol as a good thing to have around. They can be a pain when your caught speeding on the Freeway ! , but in general we like them. They do provide...

The main problem with a "Hydro-Vac" is the lack of vacuum in a Diesel engine. Yes you can add a "vacuum" compressor as Chevrolet did on the early diesel engined vehicles, but it is expensive and not nearly as efficient as the Deuces "airpaks" are. Plus your now trying to add this vacuum pump to...

I understand all the worry about modifying brake systems. The world we live in today is very litigious. That being said, if you use common sense and quality brake parts I don't see a problem. I'm not talking about using quality parts and then just "spot welding" the brackets on sort of thing...