Recent Posts

11

Technical Support / Immediate starter engagement

« Last post by Brian Miller on April 12, 2026, 08:40:09 PM »

All,
I’m having an ignition/ starter ( stays engaged )issue with my 2000 Beaver Patriot.  Turned the ignition key to the first position and the starter immediately engaged.  Just had the starter replaced because the previous starter had immediate engagement and overheated and seized. I thought it was a solenoid issue that caused the issue however it’s the same issue with the new starter.
Need some ideas…

Thank you
Brian

12

Technical Support / Re: No Air Pressure??

« Last post by Roger Milne on April 11, 2026, 01:47:31 PM »

Thanks Eric, I was actually going to put it back together and run it so I can try and determine where the leak is. It was a "in the field" repair, so I knew it was leaking, but not exactly where. This link might actually help.

13

Technical Support / Re: No Air Pressure??

« Last post by Eric Maclean Co-Admin on April 11, 2026, 03:20:48 AM »

Roger
Here is the service sheet for the 1200 series wabco dryer it might help you determine where or what is leaking..

https://www.wabco-customercentre.com/catalog/docs/mm34_web.pdf

Eric

14

Technical Support / Re: No Air Pressure??

« Last post by Roger Milne on April 10, 2026, 11:25:19 PM »

Roger
Considering the age of your coach, I suspect your air dryer is a Wabco 1200 series.  Be aware that there are LOTS of generic after-market knock-offs of this dryer that sell very cheap ($50 to $100).  Some have had success with them, others have been disappointed.  The actual Wabco dryer is very expensive.  So, be forwarned when you are shopping.

That is a fascinating reply because I actually just got off the Webco webpage looking at one and yes it is a 1200 series and they run about 550 bucks and the same looking model I hadn’t looked at the exact part number but are on Amazon for about 80 to 100 bucks so very good to know thank you for the heads up

15

Technical Support / Re: Coolant temp gauge doesn't show any movement

« Last post by Roger Milne on April 10, 2026, 11:21:56 PM »

Roger
It sounds like it's time for new thermostats.
That would also account for the low gauge readings.
You might want to take your engine serial number and check with the Cat online parts menu to see exactly what temperature thermostat or ( regulator) in Cat terms that C9 should have in it .
If I'm not mistaken the thermostat on a C9 should be in the 180* to 190* temperature range .
Running the engine with faulty thermostats will prevent the engine from reaching proper operating temperature which contributes to poor fuel mileage and a greater possibility of wet stacking at idle not to mention poor cab heater performance in cold weather.

Hope this helps
Eric

Well I am learning a bunch about this rig and I really appreciate that info we are parked at an RV park for the next month or two while we search for a house I will do my due diligence and find me a shop that can service that and take care of that issue. good to know and I appreciate it

16

Technical Support / Re: Coolant temp gauge doesn't show any movement

« Last post by Eric Maclean Co-Admin on April 10, 2026, 10:20:14 PM »

Roger
It sounds like it's time for new thermostats.
That would also account for the low gauge readings.
You might want to take your engine serial number and check with the Cat online parts menu to see exactly what temperature thermostat or ( regulator) in Cat terms that C9 should have in it .
If I'm not mistaken the thermostat on a C9 should be in the 180* to 190* temperature range .
Running the engine with faulty thermostats will prevent the engine from reaching proper operating temperature which contributes to poor fuel mileage and a greater possibility of wet stacking at idle not to mention poor cab heater performance in cold weather.

Hope this helps
Eric

17

Technical Support / Re: No Air Pressure??

« Last post by Richard Davis on April 10, 2026, 05:03:59 PM »

Roger
Considering the age of your coach, I suspect your air dryer is a Wabco 1200 series.  Be aware that there are LOTS of generic after-market knock-offs of this dryer that sell very cheap ($50 to $100).  Some have had success with them, others have been disappointed.  The actual Wabco dryer is very expensive.  So, be forwarned when you are shopping.

18

Technical Support / Re: Coolant temp gauge doesn't show any movement

« Last post by Roger Milne on April 10, 2026, 01:36:22 PM »

So just a follow up on this in case it helps others.

So we just drove 2000 miles from AZ to SC. As I was a little skeptical of the gauge and it's accuracy, I was able to get in on the Aladdin system this RV has installed and actually has a sensor page much like modern cars have with temps and pressures from various components.

Thankfully this one had both Coolant and Transmission temps and the actual readings were exactly where I'd expect the temps to operate at under driving conditions.
What I will say is this. The CAT and Allison analog gauges work, but at slightly different values compared to the digital ones on the Aladdin. But they did show readings and the Allison more closely that the CAT.
The other thing I did notice is the CAT engine itself, seems to run very cool and it was only during extended hill climbs in the AZ and NM hills that it climbed to what I'd expect them to run normally. But even during continuous road driving they CAT ran about 130-150* digitally and about 1/4 the way off the peg to halfway on the analog.

This is my first experience driving a big diesel and this type of transmission and I can say it is really cool to just watch these rigs, just pull and pull, when going up hill. A very different experience from driving conventional vehicles where the RPM increases dramatically going up hills.

Can't wait to drive it more.

19

Technical Support / Re: No Air Pressure??

« Last post by Roger Milne on April 10, 2026, 01:26:06 PM »

Roger
With your air drier it is often cheaper to buy a complete rebuilt unit than it is to buy individual parts to repair one.
Do you know which model and make the air dryer is.
If you have a haldex pure air plus like the one in the link below and decide to change the filter cartridge try to get it loosened before you remove the unit from the vehicle chassis as they can be seized on and take a lot of torque to get them to come loose.

Hey Eric,

Thanks for the reply.
Yeah we only reached or new RV home base yesterday and will be here for at least the next couple months while we search for a home. But to answer your question, No that doesn't seem to be the same style. I'll take a pic of it in a little bit and post it but it is at least accessible as it's right in the rear engine compartment by the door and I will remove the cartridge before hand as I agree trying to remove that after the body is off would be troublesome. I can't for the life of me figure out why the body would just start to leak, but removal will hopefully reveal what failed and then the search for the replacement will begin.

20

Technical Support / Re: No Air Pressure??

« Last post by Eric Maclean Co-Admin on April 10, 2026, 12:15:22 PM »

Roger
With your air drier it is often cheaper to buy a complete rebuilt unit than it is to buy individual parts to repair one.
Do you know which model and make the air dryer is.
If you have a haldex pure air plus like the one in the link below and decide to change the filter cartridge try to get it loosened before you remove the unit from the vehicle chassis as they can be seized on and take a lot of torque to get them to come loose.



https://www.anythingtruck.com/product/052-170DA33100.html

Hope this helps
Eric