HELP

This is the place to get help with technical matters concerning your M151 jeep

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acudanut

Re: HELP

Unread post by acudanut » July 23rd, 2018, 7:56 pm

The other pic is from a 63 Ford. (plain M1).

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Re: HELP

Unread post by Surveyor » July 23rd, 2018, 8:29 pm

acudanut wrote:…. Wire Number 568 from the 60 amp Gen. I can't seem to figure out where and how to make it ground properly.
Edit - see viewtopic.php?f=3&t=8442&p=99440#p99440

Not an electrical expert so I'd get a second opinion before following above.
Last edited by Surveyor on July 23rd, 2018, 11:14 pm, edited 1 time in total.
1960 M151 Run #1
"There is one nut on a M151 that is very difficult to remove....." - K8icu
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kmam
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Re: HELP

Unread post by kmam » July 23rd, 2018, 8:44 pm

That is correct. You should have the +ve and field connections under the cover saying disconnect battery... and the -ve connection is on the body. When I got mine the alternator was not charging and it was a simple matter to solder that lead after which all was fine.
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acudanut

Re: HELP

Unread post by acudanut » July 24th, 2018, 8:55 pm

kmam wrote:That is correct. You should have the +ve and field connections under the cover saying disconnect battery... and the -ve connection is on the body. When I got mine the alternator was not charging and it was a simple matter to solder that lead after which all was fine.
What Batteries.?? LOL. I have not got that far yet.

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Re: HELP

Unread post by Fil Bonica » July 25th, 2018, 9:51 am

568 Does Not ground!
In order for alternator to work 568 must be connected to switched 28 volts.
If it is an A2 harness there is a wire marked 568.
If you are using something else you need to connect to the switched side of the ignition switch.
Hope this helps.

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Re: HELP

Unread post by rickf » July 25th, 2018, 10:33 am

Acudanut now has a thread going just for the alternator. I suggest all post for him related to that go on that thread to avoid confusing things. Things get very mixed up when posting about the same thing on multiple threads.

http://www.g838.org/viewtopic.php?f=3&t ... 432#p99432
1964 M151A1
1984 M1008
1967 M416
04/1952 M100
12/1952 M100- Departed
AN/TSQ-114A Trailblazer- Gone

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Re: HELP

Unread post by m3a1 » July 25th, 2018, 10:54 am

Sorry your thread got hijacked, Cap. (Shame on you, Acudanut! :lol: :lol: :lol: )

Ok, Cap, let's get back to it. How are things going on your pretty little MUTT? Have you figured out where that stray fuel is coming from?

Cheers,
TJ

acudanut

Re: HELP

Unread post by acudanut » July 25th, 2018, 9:18 pm

m3a1 wrote:Sorry your thread got hijacked, Cap. (Shame on you, Acudanut! :lol: :lol: :lol: )

Ok, Cap, let's get back to it. How are things going on your pretty little MUTT? Have you figured out where that stray fuel is coming from?

Cheers,
TJ

Sorry, I was just showing my coil on my mutt.
Last edited by acudanut on July 27th, 2018, 3:40 pm, edited 1 time in total.

CaptB
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Re: HELP

Unread post by CaptB » July 27th, 2018, 6:25 am

The fuel is definately coming out through the gasket and not from any of the lines, weird. And before anyone asks the tank is only half fuel at best. I have a new sender unit on order and added a new gasket to that order so when it all arrives I will strip it all down and fit all the new parts at the same time. I will report back when this is done

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Re: HELP

Unread post by m3a1 » July 27th, 2018, 10:18 am

Roger that. HOW that is happening is one issue....but might not be THE issue. Suggest you keep sleuthing.

What I'm having trouble getting my head wrapped around is HOW that fuel is getting up there to that gasket from the inside at half-full and I'm only imagining two possibilities. You say it is leaking "at the gasket" which in my mind tells me you have eliminated the possibility that it is leaking from the fittings on the top of the tank. So, if you have an A1 style in-tank fuel pump it just might be compromised (and somehow gushing fuel against your already marginal gasket) or if you have the simple pick-up tube, it may also be doing the same as the engine-driven mechanical pump draws fuel up out of the tank. In either case, a serious examination of the inside of that tank's lid (where all the fuel delivery bits reside) is in order.

I will say that we may yet find we are chasing our tails on the matter of fuel delivery so don't claim victory just yet. One sure way to see if we are on the right track is to set up an auxiliary tank, line it to that mechanical pump and see if that makes an improvement.

Keep us in the loop.

Cheers,
TJ

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Re: HELP

Unread post by CaptB » January 6th, 2019, 10:16 am

Ok troops, it's been a while but life got in the way. So update, the fuel leak was coming from the gasket on the fuel tank. Replaced the gasket, checked the filter on the fuel line pick up (it was ok) cleaned out the tank, some crap but not a lot. Replaced all fuel hoses and both fuel filters, cranked her up and she started ok and so far the problem has not returned. Only problem is I am not convinced that I have gotten to the bottom of this. It is now winter here in Greece same time I first got the Mutt and had no problems running. Could there be a problem with fuel vaporising in the line during warmer weather, just a thought, I will continue to run her and will post an update if the problem returns.

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Re: HELP

Unread post by rickf » January 6th, 2019, 9:06 pm

Does this vehicle still have the return vapor line from the carburetor to the gas tank? It will come from the top of the carb above where the fuel line goes in and run through the firewall on the drivers side.
1964 M151A1
1984 M1008
1967 M416
04/1952 M100
12/1952 M100- Departed
AN/TSQ-114A Trailblazer- Gone

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Re: HELP

Unread post by CaptB » January 8th, 2019, 11:43 am

Yes it has the return fuel line fitted

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Re: HELP

Unread post by rickf » January 8th, 2019, 12:23 pm

If it has the return line then you probably are not having a vapor lock issue since the vapor would pass through the orifice in that line. I have not gone back through the entire thread but did you ever pull the supply line off of the carb and do a fuel flow test to see if the pump was good?
1964 M151A1
1984 M1008
1967 M416
04/1952 M100
12/1952 M100- Departed
AN/TSQ-114A Trailblazer- Gone

CaptB
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Re: HELP

Unread post by CaptB » January 9th, 2019, 3:14 pm

New pump was fitted and there is good fuel flow

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