Fuse / Breaker panel Location M931???

[Carlo]

Im sure many of you have heard this request but Im new and have whats a problem to me. Are there Fuses or breakers on a M931 and if so where are they?
I have 30 plus years experince in European Ex Military and all use Breakers. The M931 must have them, right? HELP

 

[porkysplace]

TM's for the 939 series trucks

 

[Carlo]

I was able to download a limited part of the TM but can not find the location. Do they use fuses or breakers?

 

[jarokoro]

That info should be in chapter 3 of the TM its been awhile since I worked on a 900 series. I was going to look it up but I did not want to down load since it was so big, and I dont own one yet and I dont want my wife complaining that I am taking up all the hard drive space on the laptop!

 

[juanprado]

fuses & breakers

Carlo,

The abs brakes have 2 fuses inline in the wiring inside the cab under the dash close to the steering wheel.

There are 2 circuit breakers in the engine compartment on the firewall to the left of the windshield washer bottle mounted high almost to the top of the hood line. Each has 2 connectors and are the same amperage with 2 mounting screws each.

The protective control box also serves as a circuit breaker for overload or incorrect negative/positive hooks ups. It also has 2 solenoids inside of it along with some other electronic goodies. It is the large metal box typically black in a m931 with the large wiring harness on the bottom next to the windshield washer.

I don't recall which circuit goes to each one. What is your problem or symptoms that you are troubleshooting?

Benvenuto!

Juan

 

[Carlo]

Grazie Juan!

My brake light wont turn on till the brake pedal is mashed to the floor. So in traffic if I just touch the brakes the cars behind see no brake lights. I found the brake sending unit that another buddy helped me and Im going to remove it this morning. I had a ex US Navy truck that showed low oil presure and I removed this sending unit cleaned it with either and installed it back and the oil pressure went from 15 pounds to 65.
I will let you know and thanks!!

Fuse / breaker pannel.....
Finally some one replied for I know now not many people knew or cared where this is. I collect and own ex military trucks from 4 nations and have never see one that did not have fuses or breakers (breakers being the better of the two). Thanks again Juan! And Nice truck!

 

[juanprado]

Your problem sounds like the switch/pressure sending unit on the inside of the frame rail close to the fuel tank. Mine was totally dead. One of the first things i fixed. The switch uses common pipe thread. Might be difficult for you to find as it is not metric. It is a simple 24 volt stop light switch with 2 wire terminals.

Those trailers you have look very cool. When you have time post more pictures on your cool MV's. Thanks for the other ones you posted.

If you need a switch and can not find one, i will be glad to give you some leads where to look. Since it is a small part, airmail should not be too bad.

I lived in Rome for a year in 72 when I was 8 years old. I wish I had been older to appreciate it more.

 

[Carlo]

Hey Juan. Thanks for the reply. Much to my suprise there is a great source in Holland that stocks 90% of everything and the prices are as cheap or cheaper than US prices. I will keep you informed on my findings.

Thanks for the words on my "junk" as the wife calls it. That 3 axle trailer is "new unused". I paid €1.500 for it. I dont know what I will use it for but I like it. The single axle was €700 and it also was new. The German goverment built these during the end of the cold war and never used them. No they sell for scrap price at best. I would LOVE to have a tank transport trailer to pull behind the 931 but thats another page in the dream book haha.

Last week I bought welder/generators from goverment auction with Porsche motors! They are new new from 1963!! Crazy stuff.

Did you see my Bedfords from UK army? Those were stored at a old britsh airbase in holland at the german border since 1986. 2 years ago there were thousdands no they are almost gone. The trucks were super cheap but the Bedford is but ugly! Its got a spicer trans, diffs and reduction with a cummins inspired super super long stroke motor but the cab is JUNK!

Thanks for the help again and offer to find parts.