THANKS for adding me!! Picked up this rig a week ago. 1990 M925A2. Overhauled in 2010. Had 70Hrs and 1395mi. Came with issued items that I know of still new in tool boxes, plus all bows and canvas bed cover. Also got the M105 trailer with top and bows. It made the 100 mile trip home but have a few bugs I need to work out with the air system and/or CTIS system.
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My first post and my first MV
- Thread starter BiggDaddy
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Welcome to the Outfit!
First place to start troubleshooting would be to crank the truck, let it build air - then listen from under the truck. If you happen to have a shop air compressor, attaching a glad hand and air line to the front driver's side will air up the truck with no noise. If you don't hear air leaking then you need to break out a spray bottle of soapy water. The CTIS hoses (possibly behind the "hub caps") need to be sprayed. All those hoses under the truck may need your attention too...
The TM's for 939 Series trucks are here for downloading:
Updated TMs TBs MWOs for the M939
A couple of these may be repeats but I'll include them anyways in the interest of trying to make applicable TMs, TBs, LOs, and MWOs easier to find. There are only a couple missing and I'll notate those in hopes that someone else may have them and can link them as well. Please understand that...
www.steelsoldiers.com
Updated TMs TBs MWOs for the M939 (Cont'd)
Since the last post was being a real PITA and didn't like having so many links in it I had to break this into 2 posts. TM 9-2320-272-24P-1: PUB DATE 08/27/2012; REPAIR PARTS AND SPECIAL TOOLS LIST (RPSTL) FOR TRUCK, 5-TON, 6X6, M939A0/A1/A2 *SUPERSEDURE NOTICE - This manual supersedes TM...
www.steelsoldiers.com
Lots of reading and looking with lots of troubleshooting flowcharts are hidden in these books.
Thanks!
First thing it was doing is not building air at idle. was only getting 50psi at the compressor. Pulled the head and resurfaced it at work, cleaned up the unloader, lubed the soft parts and made some new gaskets. Works great now!
My next problem is all my tires aired down to about 20psi while driving. I posted about it in the 5 ton section.
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Welcome to the site! Great looking truck you have there!
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One small thing... You had your lights on - Right? The light switch seems to be tied to CTIS and that is how that system is energized. You might want to look at the Spicer troubleshooting guide or the military CTIS diagnostics are in TM9-2320-272-23-1
I did have the lights on, I figured out the hard way that there are no brake lights or blinkers without the switch on stop lights or headlights. I did not know the CTIS was tied to it. 10-4 on the troubleshooting guide. I will be reading up on it. Thanks
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You have a thread about the airing down problem. Don't start trying to troubleshoot it here, and there. Will only confuse you, and is against Forum rules.
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Sure a nice looking truck! When I saw it the very first thing I thought about was the CTIS and what a PIA they can be, then read your post and was not surprised in any way! Take your time on it and be thorough in troubleshooting then when you get tired of all the messing around there is a CTIS delete kit that you can buy and troubles are over!
Fine looking truck though!
Fine looking truck though!
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Welcome to the site, good looking truck.
Thanks! Update on CTIS issue in the 5 ton and up section.