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Last time I looked it was summertime here in the US and the glow plugs may or may not come on depending on how warm it is in your area. Crack the water seperator valve in the left fenderwell while your cranking the engine and see if you get fuel there. If you do then take a look at the #54...

The tires leaning in at the bottom is completely normal. When there's some load in the back end it will straighten out. Mine did it until I dropped an ambulance body onto the chassis, then the wheels were verticle. An unloaded truck is riding at the top of the suspension and will be a harsher...

Just bought 100 of them on Ebay for $12. It's a standard riv-nut available in any thread you'd like to install. There are special tools to install them but you don't need them. Look on You Tube for a simple way to install them with commonly available hardware.

The HMMWV fan works backwards from what you'd expect. The Cadillac valve holds it disengaged most of the time. Disconnecting the valve connectors causes the fan to engage. This is a fail safe mode so if anything dies the fan stays engaged all the time. Disconnect the line from the Cadillac...

We had a very productive day here in California yesterday. We were able to get all three of our RF-5033 amps up and running and repaired one of the PRC-138s. Only one of the amps would actually transmit, the other two would generate an A30-F01 error code and do nothing even though everything we...

Why isn't this post in the HMMWV forum? If your cadillac valve is kaput or the TDR or the clutch is on it's way out you'll get this issue. Where does the "air burst" appear to come from? The clutch system is hydraukicly operated. Are you referring to the sound of the fan blades make when the...

Look in the -20 manual and follow the flow chart on how to make sure all the air is out of the steering system. With the front end off the ground you need to run the steering from lock to lock about 40 times holding it at the ends of travel for a few seconds each time. Make sure to keep the...

This is the result of never lubing the U-joints. Only 1 journal had about half the number of bearings in it and the other 3 were metal to metal. Total lack of PCMS on my part!

Lovely day today! Last week while I was working under my 996 ambulance I reached up and grabbed the right front brake caliper and it rocked all over the place. The bolts to the differential had come loose. To tighten them you need to remove the wheel and tire, the half shaft, and the caliper...

Home Defect sells 4 x 8 foot sheets of a plastic cardboard called coroplast that's rigid enough for this application and won't rot or mildew if it gets wet. I've used it under my 151 top for years to keep the water from puddling there. It runs about $20 a sheet. It's the same stuff they make...

Without knowing how you wired the cutoff switch it's kind of hard to guess at what may have happened but generally when you remove power things don't go south on their own. There is no "ignition coil" in a HMMWV being a diesel and the glow plug relay is up under the dash in front of the driver...

Change the A80 mic amp module.

I think a 3D printer would be far better than trying to form one of these vents up from sheet aluminum. You'd probably end up with sheit aluminum!

When you understand the history of the HMMWV you'll understand why some of it looks like your grandfather (great) designed it. AM General has been building military trucks forever and they simply used the same POS brake switch they put into the M151 in the '60's and God only knows how many...

It's in there...............

There's a basic flaw in the design of the brake switch system in that there's no free play adjustment in the linkage so you have the brakes coming on before the switch contacts for the lights makes and this gets aggrivated by years of the switch arcing internally and needing to move even further...

I just had a friend experience the exact same thing. The control boxes use cheap Chinesium relays that tend to weld closed keeping the starter engaged. It's discouraging to see garbage used in military products that lives depend on. He replaced them with some better quality Japanese relays and...

Go buy a set of calipers from an '87 Eagle and replace them. The calipers only run around $20 and they're a cheap fix.

With regrets the MVCC is announcing the cancellation of the September Camp Plymouth meet. At our board meeting held at Eagle Field the board voted to wait until the second week of July before making the decision whether to proceed or cancel the September Camp Plymouth Meet but with the recent...