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Well, soon you'll know two. I do not and will not have a need for a Class A license.

No difference when the parking brake is applied or released.

Thanks. I will take a look at the treadle valve this weekend. The more I research the more I suspect the treadle valve. Im going to try a few drops of pneumatic oil to see if its just a sticky valve. I may just replace it with a new unit because it poses a safety concern.

I have assurances from multiple sources that venting of the tanks when the truck is turned off is not normal. It should hold air pressure in both primary and secondary systems until I manually drain the tanks. Of course the systems aren't perfect and there will always be leaks, with that said I...

I greatly appreciate your heeded warning and do not take driving this truck lightly. I will be parking the truck until I get my license. I picked up the truck on Friday and drove it around my neighborhood over the weekend, its definitely a beast to drive. Thanks again.

I realize systems vent through the stack during operation of the vehicle. What Im looking to figure out is what is leaking when the truck is sitting and shut down. It would fail a COLA test if I had to take it today. I am losing 120 psi of pressure on the secondary side in about 30-45 mins.

I have three as well, one small and two large. I tried tracing the lines but there are so many down there that I quickly lost the line in the frame rails. This weekend I will see if I can isolate it. Thanks.

I am currently prepping for my class B CDL test. Ill research the COLA test. Thanks

I am going to pull apart the intake system to isolate which of the three lines venting to the air cleaner. Does anyone know what TM has the air line diagram is in? Thanks for all the great info!

After the hissing stops the pressure showing on the secondary gauge is 0. Im not familiar with the C.O.L.A test. Whats the procedure?

I tried the soapy water but as stated by plode its venting through the exhaust side of the system to the intake stack therefore no bubbles at fittings. I looked through the TM's but got impatient. I will read more thoroughly and troubleshoot. What about the treadle valve? I read another post...

Just bought a M923A2 and got it home. I can hear air hissing in the intake stack after Ive turned the truck off. After an hour or so the hissing goes away. When I restart my truck, the primary air pressure gauge reads pressure but the secondary gauge shows 0. To verify I started the truck...

I was the opposing bidder on that truck. It is really nice. If you're ever in the OC, CA. area, shoot me a line. I drove my truck home today and couldnt be happier.

Picked up my M923A2 today. Im glad to report that there are no issue to report. Pics and additional info coming soon. Thank you all for the great info.

Thank you for the info!!

If only, right?! I have been poring over the TM's and Operators manuals for weeks now. I even sourced a local truck to cut my teeth on. Im confident I can get this thing home without ending up on the nightly news.

With regards to the filters, when they are replaced there will now be a substantial amount of air in the fuel system. Is there a proceedure that must be performed to purge the air? Or, will the injection pump work itself out? Thanks for the advice.

I have made an appointment to pick up the truck. I will be taking my Class-B CDL written test prior to picking up the truck and picking up a moving permit. The truck is now insured. I am taking tools to swap the flat tire with a known good tire. Also, a gas powered compressor, a gladhand...

Thanks! I really appreciate the info. Im beside myself with joy that I won a truck. I pick it up Friday 5/23 from Fontana. As I live in Orange, CA. Ill be driving it home. Ill post a pic once I get it all clean. Thanks again.

I am trying to find out how to get a bill of sale from GL. I live in CA and was told I had to have a BOS in order to register. Is there a link on the site to get a BOS? Regarding the SF97, must I wait til I pick up the truck to submit it? Really excited to get one of these trucks!! Thank...