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I search some old threads on this issue and I think my problem is related to the air drier. I have air seeping out the bottom of the drier and the truck will not build any air pressure. It has acted up in the past and i was able to rap on the drier assemble and it would close up and work. That...

Going to Parade the truck tomorrow for the first time. I'll be pulling a civi trailer for our local hardware/ rental store. Going to load some equipment in the bed and on the trailer for my buddies at ACE Hardware. Should be a good time and the kids are excited. I'll post some pics when we get...

Can this be done without trouble. I'm pretty sure they are 12v/24v trailers so I guess fifth wheel hieght is my biggest concern. What do you know about these trailers? Thanks

Air pressure max's out and I think is releasing the pop off vavle. What am I looking for? I assume the compressor is not kicking out like it should. Where is the sensor for the compressor located? Or is that not the problem? Thanks

I'm changing the rear seal on my 654 Allison in my 923. I got the drive shaft down no problem but I can not get the nut off the back of the trans to remove the yoke. It appears to be lock tighted and I applied a little heat to release the lock tight but I can not budge that nut. It looks like a...

1st question: I changed the transmission oil in my truck today just a drain and fill no filter change at this time. I put a Napa R&O oil in which they claim is 10w oil. Seems to drive and shift fine but my trans temp is running betweem 220-225 degrees. I didn't pay much attention to it before I...

What is the little drain/weep/vent tube at the rear of the allison right below the drive shaft for and why do I get oil dripping from it after the truck has been driven? Is that normal or do I have a problem somewhere? After every drive I get maybe 1/4 - 1/2 pint of oil on the ground under the...

M923A1: NH250 855 cummins. Do these engines have glow plugs or a block heater? I'm assuming no since I can't seem to find either. Has anyone added a block heater to this engine platform before and how did it work for you. I have an 855 in a farm tractor with a block heater which works well so...