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The ones on my engine are marked 8.8. With that being said, the Cummins part number listed for them is obsolete and they were replaced by a stainless bolt of the same size.

When the shutterstat is closed, the input hole is closed off but the output vents to the atmosphere so the fan clutch will release. If you plumb the hoses backwards, it will leak air constantly when it is closed, and it won't release the fan clutch properly after it actuates.

This means you need to have the #1 and #6 cylinders of the engine at top dead center (does not matter compression stroke vs. overlap) when you install the compressor with the marks lined up as WillWagner said. You can use a barring device and rotate the engine until the timing pin (behind the...

It's been a while since I posted anything so I thought I'd share a few updates. I got uncomfortable with the tires last Fall when I found some dry rot cracking near the edges of the tread, so this Spring I changed the tires out for Michelin 395's that I had (on MRAP wheels). Of course that...

I don't know if my truck (1990 BMY M923A2) has something different about its tank than yours, but when I had it off the truck last weekend I could not see any baffles in it. There did not appear to be any coating (intentional or otherwise) on the inside, either. The drain boss on the bottom...

I just did it over the last few weeks. 395/85R20's removed from MRAP wheels replaced the 14R20's that were on it. I did it one at a time with basic tools and the 1 inch impact wrench I ended up getting when my 1/2 inch would not budge the wheel half nuts. It took forever but was not really all...

Here's where I tapped into mine. I drilled a 1/8" NPT hole into the plug while it was out on the workbench, and then reinstalled into the engine. It was easier than making a mount for the gage!

Tonight I did more troubleshooting on my truck and confirmed that the 3 wire sensor is indeed the CTIS pressure switch. Apparently some trucks have 2 wire sensors and some have 3. The Dana .pdf I was looking at last night didn't have any troubleshooting information in it, but I found one today...

Thanks, guys. I'll try jumping the A and B terminals tonight and hopefully report back with success.

Ok thanks MtnSnow, that is the one I took the connector off of thinking it was the one. I also took it out of the air line and confirmed it wasn't packed full of crud, hence the new PTFE tape on the threads. Like I said though, mine has 3 wires in it instead of 2 like the parts diagram and...

I've had a CTIS problem pop up on my truck recently. The best I can tell from following the troubleshooting guide in the TM, reading every thread I can find, and using the Spicer pdf file, it's not getting the signal from the pressure switch that tells the system it has 120 psi. I've found the...

Mine also had some brackets bolted behind the front mounts on the box that guided the front of the box back down squarely when the frame flexed. They would hit the mounts on the frame rails if you did not remove them. I've seen multiple threads where the boxes were removed by sliding them...

Check to make sure you don't have your ground and high beam wire locations flipped. I used a diagram I found online and it was backwards. It sent the current through both filaments on the low beam setting and was very dim. Yours may already be fine, but it is something fairly easy to check.

Has anyone else had trouble with the alternate shutterstats identified in this and other threads? As best I can tell, there are 2 options in the market, the original Evans unit that is supposed to be failure prone, and the Medallion brand ones that are available through various retailers...

Thanks! That's my volt meter for checking the status of the 'house' battery. It's just a cheap China made piece so it's lower than my good meter's reading by about 0.2 volts, but it's a pretty constant offset so it's still useful. I think it may even be adjustable but I've just learned to...

Thanks! The floor covering is just peel and stick Armstrong brand floor tile from Lowes. They were cheap and give me the ability to replace them when one gets damaged. I've already had to exercise that option once after a sharp corner on my tool box cut one. [thumbzup]

The last thing I've been working on was to get the primer covered up before winter time. I'd originally planned on doing the full 3 color woodland camo, and I still may at some point, but I like the way it looks solid green for now so it's going to stay like it is for now. Here are some pictures...

When I figured out that my shutterstat wasn't working, I took it apart only to break the thermal module in the process. I'm waiting on my replacement to arrive, but while I was into the cooling system I decided to go ahead and flush everything out and add a coolant filter system. It was very...

It's been a while since I've posted anything, largely because I've been busy trying to get work done on the truck. I've gotten the interior a little closer to 'finished', and taken the truck on a few short trips. I've also gotten the toolbox made for the back. It is made from 1/8" steel and...

My M109 was a 1990 rebuild and had water leaks at some of the riveted seams in the roof, as well as at most of the window frames. The body seams all had a polyurethane caulk around the edges, which I replaced with a Loctite brand polyurethane caulk (Loctite PL S40 specifically). I know others...