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Each time I do some repair work, I am constantly amazed at how such a big truck with wide open spaces can be so hard to work on due to clearance/inaccessability issues like you found with the steering box.

Next time you need primer quickly, remember that Ron sells Gillespie. One day UPS to Bay Area.

In my former life, I did the noise reduction engineering for Fabco trucks. What I found was that the simplest and most important method of noise reduction was to fill all holes in any structure between the listener and the noise source. On a truck, this would be the holes in the floor for the...

I checked the fittings this weekend. Both fittings have 9/16-24 threads. The standard fittings thread OD is .560" but the DOT fittings are .530" OD. This is why the existing DOT truck nuts won't thread onto the hardware store fittings and the hardware store fittings are extremely slopply on...

You can't use auto parts/hardware store fittings. Air brake fittings are different and must be DOT approved. Also, air brake fittings have extended nose nuts to prevent vibration cracking. The reason your truck fittings are loose when you use standard fittings is because the threads are...

I checked on this before I bought my M818. Called CARB engineering group and the guy I spoke to said regulations don't apply to historic vehicles. Make sure you are going to register and use as historic vehicle

Oh.

I don't know what size that specific line is, but the rest of the truck is all 3/8 copper. If you are getting new fittings, make sure that they are air brake fittings. The air fittings have to be DOT approved and they are a different size than standard auto parts/hardware store fittings. The...

Replaced switch. Problem fixed!

Bad switch. Jumpered brake switch and brake lights came on and stayed on.

Agreed-sounds exactly like my problem. Must have missed this thread. I will look at the air switch.

I will jumper the switch terminals-if the lights stay on, then it is a bad switch.

No, seems to me a bad switch would either work or not work. Does a bad switch act like this?

The brake lights on my M818 turn on for about 2 seconds when I step on the brake pedal and then they go out. All the other lights work fine and the blinker switch has been replaced. Anyone know what might be causing the problem?

It is a two axle truck with a GVW of less than 26,000# so it falls under the catagory of a Class C. The Motor Vehicle Code doesn't address modifications for historic vehicles-the requirements are 25 years old and used for display type events only, which the truck would qualify for. The only...

Am currently adding a ramp to my M871 flatbed for a halftrack. It is a high trailer(55 " high deck). I found a dump truck removeable ramp on Craigslist. The ramp attaches to 4 hooks welded onto the back of a dump body. The ramp lights plug into the trailer plug on the back of the dump truck...

Brian is correct about Calif being serious about CDLs. Rigorous written and driving test. DMV driving test is 90 minutes long and they look at everything you are doing. Break one rule or rub a curb with a tire and your test is finished right now.

I hooked up the trailer last nite and drove it around quite a bit. The trailer supply valve system works great! Just a punch of the button and the brakes set or release.

Currently working on an M871 trailer which is similar to the M127 shown above. I found a dump truck detachable ramp for loading backhoes into the dump bed and I am working on attaching it to the back of the trailer. It will be removeable just like on a dump truck so that I will still have a...

I don't know how to do pictures but maybe I can describe it. The valve I used was a Bendix 40 PSI automatic dash control valve. It comes bare so make sure you order the mounting nut, red octagon trailer knob, and the roll pin. I tied the supply port of the valve into the manifold that is...