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I there a difference in pressure between the older 6.2 v belt pumps and the newer serpentine belt types with the reservoir on the of the engine? I am doing an engine swap and don't want to blow out any parts. Can't really find any useful info on the subject though.

I am installing a 4L80e in my M998 and it is going to go in stages. First is get the trans in the truck and hook up the drivelines, hoses and shifter. The second will be getting the electronics hooked up. The question is, can you move it with all of the electronics disconnected? I ask because...

Hi Guys, Anybody got a part number for this little rubber bumper? I am missing one and can't find it in the parts manual.

Hi Guys, I was doing some calculations to correct my front end alignment on my 90 M998. The amount of shims concern me. Can you have that many? The TM says 1.5 caster and +0.68 camber so mine seems to be way off. The civilian 92 uses less camber so I am going with that.

HI Guys, I think I am going to pull my injection pump and have it rebuilt. 1990 M998 with a 6.2. Couple questions; 1. I remember reading somewhere that you can have them rebuilt to non detuned specs for better engine performance but I can't find the info now. Can anybody remember where that...

Hi Guys, I just picked up a couple of these and I am not sure who made them. Have you seen these before? Looks like they may have had a battery hold down at some point and a splash guard. Anyway, I you have a lead on who made them, let me know. Thanks

I picked up one of these and can't find anything on it in the TM's. I need the part numbers for the mounting brackets, pins and bumpers. Anyone have a TM on it?

Hi All, I took the M998 out today and put it away. Went back out the the shop later and was working on something and noticed a short 1 second buzz/vibration noise coming from the HMMWV. I didn't have time to trace it down but it was only happening once every 3 or 4 minutes. Anybody run into...

Hi all, I picked up a set of old style 12 bolt wheels with some new tires on them. I wanted to flip a couple of tires to match the tread direction so I took a couple apart. After I was done putting them together, I stuck them on the balancer and noticed the back wheel half was out of center...

I decided to remove the rear camber shims on my M998 to get a strait camber. Wow, those rear upper control arm brackets are a bear to remove by yourself, good thing I have 3 elbows...... Anyway, I know this topic has been beat up a bit around here, but I couldn't find the torque specs on the 4...

Anybody know what the front window is made out of? I was attempting to attach a rear view mirror to it but couldn't get the epoxy to set right, kept popping off. I gave up and mounted it on the upper windshield frame. It's not ideal, but I love having one there.

Will the E-rated MT/R tires fit on 12 wheels with the MT runflats?

I have had some issues with my turn signals. When I first start up and fro about the first 20 minutes of driving, the turn signals will not always work. After that they work great. The lights come on, seems like the flasher just doesn't go on and off. Before I start tossing money at the...

I bought a DTI timing setup for my 6.2L HMMWV. it was missing the little timing gauge. Anybody know where to get one of these for a reasonable price?

What are your thoughts on having a fiberglass hard top made? I was discussing this with a Jeep top manufacturer. $8000 for the initial mold and $2,000 for the tops as they roll out. Might not be a a bad look on a M998. Of course, the top could be modded any way that I saw fit for the initial...

I have a weird issue with my 12 bolt wheel. The tire is aired up and looks good, however, when I check the tire pressure, I get 0 pressure. If I try to add air, if goes from 0 to 40psi in less than a second and when I let the air back out it goes to 0 in the same amount of time. I removed the...

So what do you think...:shock: They drive really nice and won't explode if I hit 50... They came of of a Dodge 3500 and the offset is really good. just need a set of 37x12.50 18's.

Hi Guys, Just took the HMMWV out for my first 4 hour off road adventure on Friday. Let me start off by saying that this truck rocks off-road and I don't want to compromise what it is, I am keeping it completely milspec HMMWV, camo and all, that's why I bought the military version. Now, on to...

Hi guys, I have been digging through all of the parts manuals that I can find and can't find a part number for the rubber grommet that goes behind the blackout light on my M998. Anybody have the number?

Hi guys, I just picked up a 1990 M998 and have been going through it. First order of business was to change out the seats. Found a set of Smittybilt's at Summit on sale for $109 each so I went with them. Only issue I ran into was the drivers seat base is missing parts. It looks like the...