Recent content by KN6KXR

On the M939A2 getting to the PCU to check solenoids, power, etc.. is the hardest part if it's a winch truck the cover is kind of a PITA. The bench test for the solenoids (there are only three) is easy and cleaning the valve block is easy. The CTIS manual has pinouts for all this if you can use a...

There's a 4-way fitting off the primary tank that has the pressure switch. It closes at about 120 and opens about 90psi. It has an amphenol 3 pin connector (but only uses 2 contacts). You should test this switch. If the switch is bad the OEM ones are expensive but you can fit an HVAC switch with...

When you say a "harness to run unit on external batteries" do you mean the connector that's meant to jump a battery pack? I can't recall seeing anything other than that on the units I have. You have to use two separate batteries connected to the proper leads (batt1 and batt2). The system...

I have a kit in the M35 and one I intend to install in the M817 (they are the same) and then there's the ones that came with the M1078. As far as I can tell the only difference between them is the spacer bracket for the M35/M809 dash (it's partly sloped and the M939 is flat). If I install the...

A quick search shows that package widely, and rather inexpensively, available in both AA and AAA size.

There's not a lot I can help with without physically putting a meter to it and probing about. It's a nice package looks very well built. One can easily identify the charging circuit for the on board battery, drivers and such. It's a three wire plug but only two positions are used for a DC input...

Need pics of the inside.....

Looks like the lead time from Digikey for item 2 was pretty far out. I just ordered all the parts I need with 10 pins from Mouser for just under $100 shipped and taxed. Now I just need to scrounge some 22AWG and wait for a rainy day.....

OK so I got my box of packaging I saved from making my breakout harness for the CTIS so I can make another one. It takes these parts: 1) The panel mount connector to mimic the one on the side of the CTIS computer, and plug into the harness, is PT02E-16-26P here's a link...

I don't have the part number handy at the moment but they are listed in a CTIS thread I commented on over in the M939 forum... For my M936A2 I built a "breakout harness" where I ordered the 24 pin male and females with socket soldered connections then patiently soldered them together wire by...

I have an M817 that belonged to a friend that passed and I bought from his widow for likely way too much. It's had a hard life the bumper is tweaked, the top of the bed over the cab (and the hard top) looks like he hit a tree with it at some point, currently missing the front winch PTO shaft...

I highly recommend setting up to do your own injector service and calibration because on these machines it's super cheap and easy. I got a pop tester on eBay for about $120 and White Owl has injectors at $80 each plus they carry shims and other parts. The TM is pretty clear do a search here...

I have an M936A2. I do the following: 1) Parking brake set, engine in neutral, at idle 2) Depress lockout solenoid at end of t-case shaft, wait to feel/hear solenoid engage, shift t-case to neutral 3) Engage power divider lever located to left rear of drivers seat sometimes I have to bump the...

CA is definitely unfriendly. So much that for awhile they basically thought ALL former MV's were HMMWV and made it very hard to get plates for anything (like my M936A2). Things have gotten a little better they issued a newer VIN (vehicle industry news it's a guidance documant for the CA DMV))...