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You might want to look at what transmissions Mack matched up with the ENDT 673 engines in their commerical fleet. I recall a 10-speed duplex and 18 and 20 speed transmissions in the 60s and 70s. There are some of these transmissions stilling working in the field and there are still a few...

I have owned my M1028A2 for eight years and its been driven more than 70,000 since purchased at auction. It has always clicked and jerked when taking a corner at certain speeds as the rear end changes drive sides. It has been serviced numerous times and given a complete inspection following the...

The bumper/hitch, everything about the vehicle is designed for an M101 3/4-ton trailer. That is a long way from 5,000 lb trailer. The front and rear axels are 3.08s unlike the 4.56 gears on the pickup models. The engine does not have a turbo. The horsepower is 140 and the foot-lbs available are...

Ignore all the explanations so far. The simple, straight answer is life is just one peter match after another and then we die. These old trucks are really great tools with which to play the game.

You are correct. And I might add, since I have choices, I drive an M54A1 (a 1965 with a 1975 depot rebuild) rather than an M923 or an M813.

Its not so much about altitude above sea level as it is pressure altitude which is altitude adjusted for temperature and barometric pressure. Any hot summer day can easily cause a vehicle at 7,000 feet to deliver performance as if it was 12,000 feet. Truck turbochargers usually come with fixed...

non-turbo gets the regular 15-40 Rotella Turbo gets the semi-synthetic 15-40 Rotella My 1965 M54A1 with the turbo gets the semi-synthetic 15-40 Rotella. However, zinc additive for the flat-tappet portions of the engine is essential.

It can happen to almost any diesel powered truck. Years ago, I was driving back from Georgia to my home in Virginia and I was getting low on fuel. It was only five miles or so to the house so I pressed on only to be forced to make a sudden and fast stop avoiding an accident that would not have...

It is not so much a problem of bigger tires fitting, it is what happens to the transmission and axle ratios. Increasing tire size reduces your vehicle's Effective Gear Ratio. The increased size causes the tires to rotate slower to cover the same amount of ground. ... If you are running an...

Welcome USMCGunny. And, yes, you ARE considered to be in Northern Virginia.

Will it run? I paid $800 at auction for a1965 M54A1 cargo truck that was rebuilt in 1975. It had a rotted out cloth top, broken glass, eat up with rust panel and window frames. It had been pickled 12-years earlier. It had the last version of the Mack ENDT-673 engine, Spicer tranny upgrade...

LEDs lights will benefit from the use of a digital flasher unit

I have 2ft x 2ft peel and press vinyl sheets in OD green that is used for patching military parachutes. I use it on my trailer covers to patch the holes. I cut it to be several inches larger than the hole, affix it to the material, and perform the same on the other side of the cover. I've never...

B & B Military Surplus at Altona, NY there near where you live has supplied me with parts for my M54A1 for a long time. I purchased two Military water pumps and two Mack radiators from him as they are the two most difficult items to find for the ENDT-673.

Does the truck keep making the clicking sounds coming from under the left dash area as you drive? Does it ever stop?

I believe if you are operating in low light conditions, the headlights will also be dimming several times until the truck warms up. The glow plug controller continues to cycle the glow plugs on and off until the engine warms sufficiently. This is a standard feature of diesel engines with glow plugs.

My typo....285/75R/16

This is one of my farm trucks with NO LIFT. The tires are Mickey Thomspon 285/75R/16 Baja Claws. The 235/85R/16 tires that come with these trucks have rims that are 6.5 inches wide. These tires require 10.5 inch rims.

CUCV Air Conditioning https://nostalgicac.com/c-k-series-military-m1008-m1009-truck-blazer-a-c-system.html

This company is the best known AT-6 parts supplier remaining. There are certainly individuals that hold some misc. parts but most are hidden from us. http://www.lanceaircraftsupply.com/