willysmjeeps.com

My comments on the volt meter vs mechanical regulator weren't meant to indicate your setup was not correct. I am not yet convinced that the M170's all left Willys with mechanical regulators. It's possible that the Willys engineers meant to install or envisioned a transistorized regulator or even possibly an alternator in production and they just didn't materialize or were introduced later in M170 production..

While on the instrument cluster, has anyone been able to determine what, if any, differences there are between the two m170 cluster assemblies?
ORD# 7954878, AC#1582314, AutoLite# L7930, WO# 809828
ORD# 7954879, AC# 1582371, SW# 502V, WO# 808569

I just think that the M170 was designed with a voltage gauge versus an amp meter.
I have been installing more stuff and I am starting to run out of parts! It is a sweet feeling. It is hard to find anything major to put on. Time to start on the last items , windshield and tailgate. Paint those and It is time to stencil

From what I can decern from the parts manual, both clusters use the same temp, oil and volt gages. The differences are in the fuel gages and the mounting plate (gage panel).
Odd thing is the different fuel gages have diff. WO-numbers but the same ordinance #.
Also of note is that the M170's have a different fuel level sending unit that is not stated in the 1956 G-758 parts manual. Luckily John Bizal clued me in prior to my ordering the wrong one. You have to go to the organizational parts manual to find the M170 fuel level sending unit (TM 9-2320-208-209P dated 1966). The M170 sending unit bolt pattern is different causing the unit to be rotated a different direction than the M38A1. It may be a different length to but I've never compared them. John clued me in on the rotation thing as he HAS the M170 sending unit and they only fit M170's much to his frustration; just not alot of demand for M170 sending units.

The differences are in the fuel gages and the mounting plate (gage panel).
Odd thing is the different fuel gages have diff. WO-numbers but the same ordinance #.

That is why I asked. What difference is there in the plates?

Army ORD part numbers often represent several different manufacturer's numbers. It's is the way the supply system is suppose to work. Any manufacturer's number listed under a single ORD# will function equally well in that vehicle.

I looked at John Colwell's site (http://www.vintagemilitarytrucks.com/M1 ... gistry.htm) where he has an M170 registry with pictures and I can not see any differences on the plates.
A mystery.

Beautiful. Looking great.

I appreciate it. So close.

The M170 also used a different temp gauge with different temp range on face of gauge. This can be seen in the manuals also.