tonydamato
New member
- 22
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- Location
- Hales Corners, Wisconsin
Good morning everyone, just joined this forum as I purchased a very clean low milage '91 M998 over the weekend for a great price and I am looking for some guidance from those of you with far more experience than I. I am a Machinist and instructor by trade and am no stranger to turning a wrench. Ive built several 1000+ hp race cars and I know my way around suspension and powertrain very well. What I don't know is the specifics with these HMMWV's and the changes that were made year to year. I have done a lot of reading before making this post and I just seem to be confusing myself so I am looking for some definitive answers. So if anyone is willing to help me out, I would greatly appreciate it. Also, being a dealer for many parts in the performance racing industry I understand the importance of service before and after a sale, so if any of you are dealers for the parts I need, please let me know and Id be more than happy to work with you directly.
What im noticing so far is that my brakes feel a little odd and the rear brakes seem to have more stopping power than the front, this in my opinion is completely the opposite of the way things should be. Especially my drivers side rear brake with seems to lock the wheel up with ease. So in the name of preventative maintenance I am looking to start going through the rear end of this thing and im not the kind of person to cut corners. After crawling under this turd Ive noticed that the rotors have some hot spots on them and that is likely contributing to the brake squeal as well as the lock up issue so Im assuming I should just replace the rotors and pads. While im in there though I would also like to upgrade to these 12K lbs half shafts im reading about. In my opinion there is no reason to take this thing that far apart without doing that upgrade. From what I understand it will require grinding on the caliper mounts for clearance as well as changing the pinion gear inside the hubs. No big deal.
What im looking for is a comprehensive parts list of what I need and where I can buy it as well as any tech info that may help me with this project.
I would like to replace the rotors, pads, half shafts, and re-build/seal the gear boxes as well as change out the upper and lower ball joints if possible.
So if anyone can help me out with this, I would greatly appreciate it.
![IMG_E5784.jpg IMG_E5784.jpg](https://www.steelsoldiers.com/data/attachments/485/485414-91e6030135eb6cba53bf0e06001ea89f.jpg)
What im noticing so far is that my brakes feel a little odd and the rear brakes seem to have more stopping power than the front, this in my opinion is completely the opposite of the way things should be. Especially my drivers side rear brake with seems to lock the wheel up with ease. So in the name of preventative maintenance I am looking to start going through the rear end of this thing and im not the kind of person to cut corners. After crawling under this turd Ive noticed that the rotors have some hot spots on them and that is likely contributing to the brake squeal as well as the lock up issue so Im assuming I should just replace the rotors and pads. While im in there though I would also like to upgrade to these 12K lbs half shafts im reading about. In my opinion there is no reason to take this thing that far apart without doing that upgrade. From what I understand it will require grinding on the caliper mounts for clearance as well as changing the pinion gear inside the hubs. No big deal.
What im looking for is a comprehensive parts list of what I need and where I can buy it as well as any tech info that may help me with this project.
I would like to replace the rotors, pads, half shafts, and re-build/seal the gear boxes as well as change out the upper and lower ball joints if possible.
So if anyone can help me out with this, I would greatly appreciate it.
![IMG_E5784.jpg IMG_E5784.jpg](https://www.steelsoldiers.com/data/attachments/485/485414-91e6030135eb6cba53bf0e06001ea89f.jpg)