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The kph one reads good when comparing it to my phone GPS when set on kph. New speedo cable. The new one reads 15-20mph low on kph and mph....

For some reason my M998 has a kph ONLY speedometer on it. I bought a replacement one with mph/kph on it. Installed it and it's about 15-20mph off (low). I checked it with the GPS on my phone. The kph speedo is really close, only about 2kph off. The cable had a kink in it so I replaced the...

Do the geared hubs and differentials... Pretty straightforward.

What is the output voltage at the alternator? and at the batteries??? I adjusted mine till I had 24.8 at the terminals.... Maybe help pinpoint your problem location...

With a little work I got it figured out. Thanks guys.

I'm replacing the one on the vehicle. The current bolts spin, but don't come out. I don't think there are rivnuts in the body.

I'm trying to get the current one off and replace it with a new one. How do I get to the nuts holding this piece in place??? Cant find a removal procedure in the TM???? Current bolts spin.... Thanks.

One more thing.... I did put some pipe dope on the threads...... Was that a bad idea???

Update... Put the old gauge in and it reads the same as the new gauge, so it wasn't broken. The sending unit made the difference. Still reads about 220 on both gauges while driving. I got my infrared gun and shot the thermostat housing after my test drive and still running. The aluminum housing...

I just got back from puking in the toilet after seeing that!!!! WOW.

I will...and I also installed one of the additional grounding assemblies.

I was sitting here thinking about doing that tomorrow.... To eliminate that variable. Thanks.

1986 M998, original gauges.... Radiator flushed, new thermostat. Temperature gauge never went above 160 deg. on the gauge. Cooling fan would engage on warm days. Replaced the gauge, but still not above 160. Replaced the temp sending unit, now it goes up to about 215-220 and stays in that range...

That's why HMMWV actually means High Maintenance Money Wasting Vehicle😁😁, but I still love mine

Just had a 700R4 with 4 speed shifter installed in my 998. WOW, what an improvement. For an apples to apples comparison at 55mph the 3speed was turning about 2700rpm and now it's about 2000-2100 rpm.

Just got a new 700R 4 speed transmission installed in the M998.... Much better.

https://www.flashoffroad.com/features/PartsCrossRef/partsCrossRef.shtml Try this link

I have Black Rhino wheels with a -18 offset so they stick out about 2.5".... I think they also make 0 (zero) offset which should be like OEM.

Checking the output voltage is easy and let's you know exactly what's going on. Adjust output to 28.8v on the 60amp unit.

Installed my antenna... Now I get amazing high definition TV:):)