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I've got a 6.5L GEP in my HMMWV. Last Saturday I dove 2 miles into town, 2 miles back and right when I pulled into the driveway she started puking coolant all over the ground. By the time I realized what had happened, the temp gauge when from 210 to 240+. I shut it down right away, but now...

I took apart my (old) 12-bolt rim today, one that was given to me as a spare tire by the previous owner. A few of the studs (that hold the wheel halfs together) are badly rusted, and two of them are loose in the wheel (the hole doesn't look loose, more like the stud is damaged.) Does anyone...

Tires on my HMMWV were put on by the previous owner, prior to when I bought it last August. These were NOS with DOT dates from 2006-2011. Well one of the tires is starting to show some minor cracking in the sidewall, and other is showing MUCH larger cracking in the sidewall. I started looking...

I'm using an old photo from my housemate as an example to put identifiers on my HMMWV. She said the tailgate says: 88 C-R HQ 114 CSH 11 So 88th Army Reserve, 114th Combat Support Hospital, HQ, 11th vehicle. What would the front fender numbers be for this? And how would they have...

I'm in the process for building a "new" hood. While looking at the parts manual (figure 203) item 16, compared to my old hood the orientation on my old hood is backwards from how it's shown in the diagram. Can someone take a picture and show me how your radiator seal is mounted to the hood...

I'm considering adding a tach to my HMMWV, but don't want to cut any of the existing wiring (or use taps). Looking at the pulse tach on the back of the engine, I should be able to just move it to my own wiring _IF_ I can find the right connectors. Does anyone happen to know what the...

Was wondering if someone had a point to diagnosing what might be wrong with the horn on my M998. I looked in the service manuals and didn't see any flow charts on checking the horn wiring. So far, I've checked AT the horn. I've got 24V where I should. The other line has no voltage (or -). I...

I just installed NOS troop seats on my 2-man M998 over the weekend. In the instructions it talks about how there should be bolts and metal plates in the body, and to re-use the washers/bolts and metal plates. Washers/bolts were easy hardware store purchases. However, the metal plates I don't...

Thought some of you might find this interesting. I saw in the background of a few pictures, HMMWVs, and was curious why/how the Ukraine gov't got them. Lead me to a news story from the Kyiv Post talking about how Ukraine came to acquire them, and some maintenance stuff...

I searched and didn't see this anywhere, but I may have used the wrong terms. I don't think this is the typical "fix your glow plugs, EESS box, neutrals" thread, but something slightly different. When I start my HMMWV when it's "very" cold out, -10F to 30F range.. I need to sit in the vehicle...

One of the two "regular" soft doors I have, the window is so fogged up (scratches I assume), that it's difficult to see out of. I've tried cleaning it, but it didn't help. I was wondering if anyone knows what type of plastic (thickness and other behaviors) used in the soft-doors. I have a...

I loaned my M998 to the housemate to use as a pickup truck to get something. 1 block from where she was going, making a right hand turn.. car behind her decides to pass her on the right! (Edit: she was making a LEFT turn, and the person decided to pass her on the LEFT on a 2-lane road, marked...

I know this is a little different, but... I decided to replicate (remake?) the tool bag documented in the HMMWV manual. The bag, tire iron, pliers, Philips screw drivers and slotted screw driver are correct military surplus (as far as I've been able to tell). The 8" adjustable wrench is one...

I recently fixed the apparent lack of functioning glow plugs, and now my M998 is starting quickly. Went for a drive, stopped somewhere for 30 minutes, went back out and hit start and the starter made a grinding noise. (Sounded like it didn't engage into the engine, but did spin full speed.)...

I was wondering if anyone had a pointer to the pages that would typically be in the HMMWV equipment log book? So far I've failed googling to find examples of the pages. I'm planning on simply starting a log book on my project, but I'm curious what a REAL log book looks like.

Just needed to vent.. Figured it might be useful to other people having this issue... The smart start box of course stopped powering the glow plugs. It's getting cold, so why would it work. Ordered a new box and 8 new glow plugs. Read on forums here and elsewhere I should get a removal tool...

All of my gauges are very scratched and 'fogged up' (not moisture). I was wondering if anyone had bought plastic headlight polish and tried to sand and polish the gauge faces to make them readable again. (Ya I know I can buy new gauges easily enough, but the ones I have are working fine.)

I finally got around to diagnosing my wiper motor not working. After removing the soft top and side rails, I was able to tilt the windshield forward and found two "contact assembly" ( 5999011839530 ). I cleaned them, added some dielectric grease and got it working. However, when I...

I noticed that the the top of my alternator there is a 'threaded hole' (see the picture below). Is this normal, or should there be a bolt/plug/etc in there? (And yes, I know the 12V wire is missing was this way when I got the rig, I plan to resolve that this week.)

Ok, I've suddenly realized I have absolutely no idea how to use this tester to monitor the RPMs on the 6.5L diesel. I'd like to use it as a tach and verify the RPMs. Does anyone have either a pointer (to a TM) or just in general how [and where] to attach this thing? All of the references I've...