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- Jefferson, Massachusetts
Can't find the spec in the TM's but on my meter the old one is 028 ohms and the new one is 029 ohms
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What have you done to your 5 ton this week?
- Thread starter dezert ratt
- Start date
Valor
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- Apple Valley, Ca.
Try checking the windings to ground, the solenoid housing. Maybe a short in winding?
- 193
- 544
- 93
- Location
- Jefferson, Massachusetts
Using the common body ground, the new one has no reading at any setting. At the 2M setting on my multimeter my ohm reading on the old solenoid is all over the place on either pin or the body.
Valor
Active member
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Check the windings with ah ohm meter with one probe grounded to the solenoid body, separate from the truck ground. You want to see if there might be a short in the windings. There should be infinite ohms, no continuity. If there is some, that means there is a short and pulling down the voltage to operate the solenoid.
- 193
- 544
- 93
- Location
- Jefferson, Massachusetts
I gutted the old fuel shutoff solenoid on my M813 to turn it into a full manual valve and now the engine won't start.
Figure I've lost prime in the lift pump as this is the first time I've had the shutoff valve side of the fuel circuit disconnected. When I had the supply side off for troubleshooting filters, lines and the pickup tube all I had to do was use a transfer pump to pull fuel through the filter then screw the supply line back into the lift pump and she'd start within 10 seconds.
The threads I've seen for priming an NHC250 pump show an actual manual pump which my rig doesn't have.
Is there anyway to manually prime the Lift Pump on my M813 to save my starter?
Figure I've lost prime in the lift pump as this is the first time I've had the shutoff valve side of the fuel circuit disconnected. When I had the supply side off for troubleshooting filters, lines and the pickup tube all I had to do was use a transfer pump to pull fuel through the filter then screw the supply line back into the lift pump and she'd start within 10 seconds.
The threads I've seen for priming an NHC250 pump show an actual manual pump which my rig doesn't have.
Is there anyway to manually prime the Lift Pump on my M813 to save my starter?
msgjd
Well-known member
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unfortunately that's the nature of the M809-series , losing prime is easy once their system is opened up.. Changing a fuel filter beside the road without having a can of fuel to fill the filter can is impossible unless you have a hose and like the taste diesel fuel , and even then, priming is still a bear.. I have always wanted at the very least to put a check valve on the M809's, or better-yet an electric bypass-type pump just for priming .. Another trick is to have a fuel tank filler cap with an air fitting (and pressure regulator) to force the fuel up out of the tank , and i clamp the rubber part of the return hose with vice grips.. The setup also gives you an excuse to make a carry-along air hose with gladhand for such occasion and for tires .. The ultimate "fix" I have seen on an M809-series is the commercial spin-on fuel filter head having an integral manual priming pump.. Old Caterpillar engines had a similar goodie as well, but in time tended to leak around the primer shaft and suck air