M35A2 Fuel Pump Fuse Location

[peter]

I read in an old post the M35A2 has a fuse protected fuel pump. My pump is not pumping this would be a quick check, if; I could find it.

Can someone tell me where the fuse is located?

I am a new member, so; I think I will test the waters with a photo of the deuce in question.

 

[doghead]

It's right on top of the fuel tank/pump. Under the small square cover that is held on with 3/8" hex head nuts. (where the wire enters the pump).

If you replace it, be sure to use a slow-blow fuse, about a 3 or 4 amp will do. A search here, will find a Radio Shack part number.

 

[cranetruck]

Welcome to the site! You may enjoy browsing the PS magazine section (pictures of the fuse in question).
Steel Soldiers :: Military Vehicles Supersite

 

[peter]

Thanks doghead, Found it. I tired a 7.5 amp and blew that. So; I am off to CAP or NAPA for some slow blow. I think I am hosed, but still hoping for an easy fix.

Peter

 

[bryan70546]

I am in the same boat as you , I replaced my fuse with the one from radio shack and the pump started working great , now its not working again so I will have to dig futher into it some more

 

[nk14zp]

Welcome to the site.

 

[bryan70546]

Welcome to the site.

Thanks NK but I have been here a little while

 

[peter]

I guess he meant me, thanks. Nice to be here.

I had to drop everything and run out. I will probably try and remove the pump tomorrow and eye ball the situation.

Can anyone recommend a reasonable source for a used pumps or replacement pump? I maybe getting ahead of things, but no harm to ask. I may also try to rig up a 12v pump, but if I can do it clean with right part, that always better.

Wierd thing is when I checked, the fuse was missing! I have run the engine and drove the truck around the yard. I dont image that could be done with no pump? Just running off the filter!! I dont think anyone is playing games, since the pump seems bad, so not just a prank. I though I heard an engine knock or it ran somewhat poorly but what the heck? Now could that have been running without any fuel pump, just on what was in the filters? Talk about bullet proof or just plain spooky.......

 

[jasonjc]

YES a Deuce will run OK with out a pump. I drove mine that way for years. There is another post that list places to get the pump. If you want a new one they are about $225 for the manufacture. Thats the best deal for new ones.

 

[poppop]

I fixed three of mine just by inspecting and cleaning connections. One I thought was dead and pulled it from tank and had new pump ready to install. Cleaned a ground connection that was inside the tank and she purred like a kitten, still working today. Put the new pump back on the shelf.

 

[actionfigurebob]

Has anyone tried remote located aftermarket fuel pumps? Boyce Equipment sells a unit made for just such applications. Talked to a parts guy there who claims they work well on m35's. Can be located on top of tank, on lower rear corner of cab or on the frame. $95.00 for the kit.
Any other sources for such pumps? Given the failure rate of the stock intank pumps, surely someone has gone this route. Would be grateful for any advice.

 

[KaiserM109]

Take a look at this thread:

Dead Fuel Pump; Need help fast

Help! I know all the issues and have intended to save my nickles up for a new Olympic pump, but I have to move my equipment starting this coming weekend. On an M109 you have to drop the tank because of the bed, so mine is on the ground right now. I can put the bottom of the pump back together...

www.steelsoldiers.com

A dead in-tank pump seems to be rather common. I would prefer to replace my dead one with an in-tank unit, and will eventually, but $$ dictated a cheaper solution.

Arlyn

 

[poppop]

ODIRON, a member and advertizer here sells a kit to do just that, replace the intank pump with an external one. I have an M151 MUTT and have been running an external 24 volt pump from NAPA on it for years. It works fine and is cheap.

 

[mkcoen]

I had the fuse issue last week on a truck I sold and was delivering. Once I got around to checking the fuse it was still good but I scrapped the contact area any way and when I put it back in the pump kicked on again. No idea why driving down the road it decided to die on me and then was as simple to fix as that.

 

[southdave]

I had issue with fuses, My fuse houseing would get fuel in and blow the fuse I replaced the pump from somthing that was 28 volts and used a inline water proof fuse housing now I have fuel leak though out the system do to the 30psi of pressure, though trucks performace is better not so much bog when on the hills. also I used 10 amp fuse do to use of WMO as fuel

 

[blisters13]

TM 9-2320-209-20-3-1 page 4-53 states a "2 ampere" fuse. "Higher ampere fuse could cause fuel to explode if pump overheats."

Besides pump overheating, a poor electrical connection which may be only warm can burn off creating a spark or flame if too much current (amperes) is allowed to run through it when the pump binds or seizes.

I wouldn't go higher than 3 amps. I know many people are using way higher fuses than 2 amps, and as long as nothing bad happens they will get away with it. In fact, if a higher-amp fuse had been proven to cause a tank fire or explosion, NO ONE would use the wrong fuse. But all it will take is the one time and someone's daddy, brother, or uncle will be in the burn unit at the hospital or in the morgue.

If it's blowing the fuse something's wrong. Fix it!

 

[Westech]

Yeah we all know how bad diesel explodes with a spark.....
now if you are running gas mix.... maybe be a problem.

 

[gimpyrobb]

Blister, some of the manuals are from gasser deuces. I don't worry about the oil in my tank exploding.

 

[frank8003]

goto a thread called "no fuel getting to injectors" and see #24 + #25 in that thread.
Pictures are there and the quick easiest check is to remove the pipe plug, well it would be best to put a gauge in there. I put all that information in there but it was supposed to goto the M35A2 Deuce fix it thread. I haven't a clue as to how to change that.
Anyhow a new pump is 50 bucks. And yes you need the pump lifting fuel if you have opened anything up in the fuel system.

 

[frank8003]

replacement in tank pump

me and puter not getting along good right now. I just found that the pictures didn't go. Goto that other thread, they are there