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I’ve seen a bad flange “cracked” flange on hydor booster blue line cause this issue, no visible fluid, changed out o-rings, the flange was cracked from being over tightened. Unfortunately you will need to check every o-ring and every flange connection in the PS system.

The tachometer gets its signal from the generator, so take your pick, bad Tach, bad connection, slipping serp belt…I’ve seen this happen and it’s a momentary issue, so I could care less, because I’ve seen it happen in so many trucks, I’m inclined to believe it’s normal.

star denotes a CONUS US Army HMMWV, placed on the tailgate and Hood

Pictures are worth a thousand words….

4x4 and small jack underneath is what I’ve used successfully many times…

You don’t want aluminum sliders….they don’t slide on rocks, the dig in and bend.

Great to see folks using these trucks as designed On a cautionary note, after that much fording, I would not wait to drains and refill Diffs and geared hubs, I found even a day out playing in the water I had water intrusion into my hubs.

make sure you have the correct serp belt….I’ve seen this issue and the wrong belt/pulley combination will have the belt slipping.

Either Pulley is correct, but the pulley dictates the correct length belt…the belt for the solid pulley is not Easily sourced.

Now you very well need a PS pump as well…you can’t run those pumps dry.

DO NOY USE SERRATED NUTS….

Electric impact gun is the key….

Yellow Band denotes it’s a KDS manufactured TSU, Nartron doesn’t have the Yellow band….IMO, the colored band was for easy identification between a TSU and GPC. KDS got it right, because many many times I find people purchased and installed an old GPC thinking it was a Newer TSU, but you have to...

where is the 3/8-16x1in bolt that holds the bracket onto the generator?

post A pic of you generator… check for a broken tensioner

There are 2 types…depends on the truck model.

its what the Military runs in all its diesel engines….no issues, just much more expensive than no.2

What dictates The correct belt is what pulley your running on your generator, got nothing to do with your AC compressor cuz all ECV’s have that compressor.

Standard log book, contained 2404, accident forms,Govt fuel credit card, keys to vehicle….you would get this issued to you from motor pool when signing out a vehicle.

S3 EESS or nothing, it’s either a Nartron or KDS, the TSU is regardless of mfg…Nartron or Kds