Recent Posts

21

For Sale, Rent or Wanted by Beaver Owners / For Sale 2007 Beaver Marquis

« Last post by Robert Oplinger on June 30, 2025, 05:22:32 PM »

Custom, high-end motorhome.  2nd owner, 4 slides, Detroit 60 series, 130k miles, all brand-new tires, extensive list of upgrades.  Message or call me for more info and pictures.
Layout: Salon, Eat in kitchen with full size fridge, mid shower and bathroom, king size bed, washer dryer and closet.
Perfect running condition.

Robert Oplinger
Call or Text 484-256-5165
New Tripoli, Pennsylvania

22

Technical Support / Re: 1999 Beaver Marquis - Air Brake & E-Brake Adjustment Problems

« Last post by Eric Maclean Co-Admin on June 29, 2025, 03:59:53 PM »

Devin
here is a video of the drive shaft parking brake system as installed on a Beaver motorhomes.

https://youtu.be/pdgyNiK2PCk?si=O2k7O0WuGSOvHZuu

Eric

23

Technical Support / Re: Currently broke down - Airbags will not air up

« Last post by David T. Richelderfer on June 28, 2025, 01:41:01 PM »

When you confirm the manufacturer of your leveling system, which is likely HWH, experiment with it to determine what works and what doesn't. Then, call the manufacturer, again likely HWH, and describe your findings.  I know HWH is very helpful on the phone, and may be able to suggest a first step to a repair.

https://www.hwhcorp.com/

24

Technical Support / Re: Currently broke down - Airbags will not air up

« Last post by Eric Maclean Co-Admin on June 28, 2025, 01:34:49 AM »

Gayden
Does your coach have the HWH air leveling system?
Is it just the front that's not coming to ride height or is it both front and rear?

Eric

25

Technical Support / Re: Currently broke down - Airbags will not air up

« Last post by Carl Boger on June 27, 2025, 11:44:49 PM »

I really am not familiar with you chassis, but I would start by going to the air bags and following the air lines back toward the air compressor.  Inspect any fittings or junctions/distribution blocks on the way.  Also check the air control valves at the air bags.  It's air in and air out so something has to be stopping the air in.

26

Technical Support / Currently broke down - Airbags will not air up

« Last post by Gayden.Peel on June 27, 2025, 05:57:32 PM »

So the coach had been working fine, and this morning when we got on the road after parked over night the coach was driving very bumpy and noticed the steering seemed strange, so stopped and noticed the coach is all the way down, and the bags are not airing up. Not really sure where to start looking, I can hear the air pressure relief open when it gets to pressure and I know the system is airing up for brakes and the tank reads 120psi at the gauge, I cannot hear any air leaks, even with the engine off. I would imagine the "dump valve" being open would really let a lot of air out if and this would be audible. My levelers do not work, so I cannot use the HWH system to raise the coach. It seems like the valve to let air in to air up might not be opening, if that is a thing, maybe this is the same as the dump? I'm not even sure where this would be on the 1997 Marquis with the Gillig chassis. I did a brief search but didn't come across other posts like this yet, and with the urgency to get it moving I didn't have time to invest in googling it more. I'll keep poking around and pull out the Gillig chassis manual here in a min to ee if they show any trouble shooting.

Thanks for any pointers.

27

Motorhomes and Tow Cars / Re: 2004 Beaver Marquis Sapphire for sale 541-571-5331

« Last post by Fred Cook on June 25, 2025, 07:04:24 PM »

Hey David, please give me a call at 5735285203 about your coach. Fred

28

Technical Support / Re: 1999 Beaver Marquis - Air Brake & E-Brake Adjustment Problems

« Last post by Eric Maclean Co-Admin on June 24, 2025, 12:58:14 PM »

Devin
If your parking brakes don't activate at all. Or are very weak you are looking around one of two things
1) the air is not being removed or exhausted from the spring brake chambers (possible internal leak in the yellow valve or a bad relay valve)
2) broken or weak  springs in the spring brake chambers.(Common problem)


Eric

29

Technical Support / Re: 1999 Beaver Marquis - Air Brake & E-Brake Adjustment Problems

« Last post by Frank Bergamo on June 24, 2025, 02:35:43 AM »

Brake pads and rotors.

30

Technical Support / Re: 1999 Beaver Marquis - Air Brake & E-Brake Adjustment Problems

« Last post by Eric Maclean Co-Admin on June 24, 2025, 02:22:19 AM »

Devin
I believe your right your coach may have been built during the change over to the ADB brakes both the earlier system with the drive shaft mounted P brake and the ADB system utilize the yellow P brake control knob to operate the Parking brake the only difference is the drive shaft brake was a stand alone system where as the ADB uses the brake service brake calipers to accomplish the parking brake function .
On the ADB calipers you should find a regular slack adjuster which is operated by an air chamber this air chamber has two separate diaphragms the one closest to the slack adjuster is the service chamber which operates the brakes during normal driving,the second chamber the one furthest from the slack adjuster is the parking brake chamber commonly referred to as the spring brake chamber.
When you push on the yellow Parking brake knob at the driver's station the yellow valve applies air pressure to the spring brake chamber where the pressure in that section of the brake chamber pushes on a diaphragm which compresses the large spring inside the chamber this release the brake .
However if the air system pressure drops below 45 psi the yellow Parking brake valve knob will pop up and dump the air off the spring brake chambers causing the Parking brakes to activate.

If your problem is that the Parking brake won't hold the vehicle there are several things to check.
1) check the mechanical operation of the service brakes.
2) check the slack adjuster for proper adjustment
3) check the chamber push rod stroke when parking brake activated ( your looking for a broken spring brake spring)
4) check the caliper guide pins for free operation ( these are a common fault with the ADB the guide pins get rusty and won't slide properly which causes the brake to not center properly wearing one pad more than the other and making proper adjustment of the brake almost impossible.
5) the use of the wrong grease can cause several problems as the caliper heats up the wrong grease can expand causing the brake to drag and over heat.
    It can also effect the operation of the caliper itself.

https://youtu.be/7N-St4Px8cs?si=YXvbSMFLSmiHIZ_G

https://graphicvillage.org/meritor/mm4m.pdf

Hope this helps
Eric