Oil & Fuel New Holland 1925 Year 1997

rickash1 · Mar 23, 2012

Last cold day, my NH 1925 started up, ran 10 seconds and died. It almost started on second and third tries. I turned off the fuel AT the bowl, that filter was so full of junk it had collapsed on itself, pulled loose from the bottom metal on one side,

When I replaced the little filter, I failed to fill the bowl with diesel and when I turn on the fuel, it pushed all that air right into the injector pump.

Yesterday I removed the bezel so I could get at everything. Plenty of fuel getting TO injector pump. Loosened the right most injector line and cranked but failed to advance throttle, when I cranked there was no diesel coming from the pump. I had removed the metal bezel and wire cage so I have great access to everything, front end loader bars get in the way a bit.

Today I will get out my trusty ohm meter and set it to VDC so I can check for 12vdc+ at the solenoid but I still think I have a complete air lock. MyTractor Forum member had suggesting reversing the hose on my shop vac and putting that into the fill cap on top but NOT to make a 100% seal, that I could damage something. Have you ever heard of that?

Today I plan to loosen all three lines at the block, pull down my big F-350, dual battery, 185 amp alternator for some cranking help, battery is low.

I may loosen all three lines at the block, see If I am getting any fuel and I WILL push the throttle to max.

Getting desperate, have at least two chores/jobs that need doing. Two of those involve the front end loader. The 1925 is a hydraulic, I can't pull it to start it as far as I know.

Don't know what else to check, I am getting fuel to the pump. I loosened the hose clamp yesterday and as I started to slide it off Plenty of diesel ran out. I just can't believe the injector pump just died. The MyTractor Forum has some good guys but following their instructions I have no luck yet.

One other area, someone said there is A bleed screw on the pump. Called it a "beagle" screw or something? I do see three screws, one each on top of each line and from memory, there may be one larger screw at the top.

Can anybody suggest anything else? I am a pancreatic cancer survivor, my energy level goes down pretty quick when working on and with the tractor. I have Never had any kind of problem with this tractor. Bought it new as a Christmas present for the farm in 1997 in Huntsville, AL.

I am more technical on big computers and storage, I have been an IT consultant for 30 years but no commission checks lately so living on base pay with a herd of American Quarter horses that are eating as well as us right now,,,

Thanks,

Rick

crash325 · Mar 23, 2012

Although mine is a TD45 it is similar and I have been there.

#1 check your seat switch. by pass it and try.

#2 Run a wire to the solenoid on the injector to a know hot wire (battery)

I had to bleed the injectors once. Loosened 1 at at a time till each flowed fuel. Then it fired right up.

If all else fails call the dealer and talk to 1 of the service men.

DieselMonk · Mar 23, 2012

Had the same problem on a Onan generator. For some reason we ended up with air in the injector pump and cracking the fuel lines didn't do anything. So tighten the fuel injector lines and open up the pump bleeder screw or bolt until fuel flowes. Close it and then crank that tractor! As long as the tank is above the injector pump and the fuel is turned on and a good filter installed, it should self bleed without a backwards vaccum etc. in the tank. Different it may be if there is a lift pump. However this thing should be going in a minute (once you know where the injector pump bleeder screw is). The bleeder screw should be somewere near the injector lines on the pump.

rickash1 · Mar 23, 2012

crash325 said:
Although mine is a TD45 it is similar and I have been there.

#1 check your seat switch. by pass it and try.

#2 Run a wire to the solenoid on the injector to a know hot wire (battery)

I had to bleed the injectors once. Loosened 1 at at a time till each flowed fuel. Then it fired right up.

If all else fails call the dealer and talk to 1 of the service men.

Don't have a seat switch anymore, bought an OEM seat, much better with adjustable arms, etc,.

Bro-in-law is here, headed down to run a hot wire from the battery, going to check for 12 Vdc+

If all that is good we are going to use that open end wrench which we can turn about an 1/8 at a time but then they are finger loose. Can't move them far, just UP, Those steel lines are tough to get re-started if you get one angled wrong.

Found a local guy that worked at the NH dealership 14 years. And thr dealership will always pass you to a mechanic.

Thanks! Will advise.

Rick

MrWhippy · Mar 23, 2012

My 1710 was a bear to bleed the pump and injectors. Lots of hand waving, but basically cracking each injecter a bit with cranking until the bubbles were out and move to the next one down the line. Then with it WOT, crank for 20 sec bursts until it starts.

Then, I'd make a promise to myself to change the fuel filter twice a year.:laughing:

rickash1 · Mar 23, 2012

DieselMonk said:
Had the same problem on a Onan generator. For some reason we ended up with air in the injector pump and cracking the fuel lines didn't do anything. So tighten the fuel injector lines and open up the pump bleeder screw or bolt until fuel flowes. Close it and then crank that tractor! As long as the tank is above the injector pump and the fuel is turned on and a good filter installed, it should self bleed without a backwards vaccum etc. in the tank. Different it may be if there is a lift pump. However this thing should be going in a minute (once you know where the injector pump bleeder screw is). The bleeder screw should be somewere near the injector lines on the pump.

Hey! Thanks.

Don't see a lift pump but it's a good 6-7 inches UP to the block from the pump. Going to try the bleeder screw, I think if that doesn't work I may put an eye dropper of diesel in each cylinder, see if will pull the air through into a stream of nothing but what it needs. This tractor only has 1272 hours on it, it's like new. About 2 hours a week I think, that would average out as most day's it just sits,,,

This problem has been kicking my butt over two weeks when I get a chance to work at it.

This time, I will have the throttle advanced all the way. When I took the line off of right side of the injector pump I forgot.

Again, Thanks!

rickash1 · Mar 23, 2012

MrWhippy said:
My 1710 was a bear to bleed the pump and injectors. Lots of hand waving, but basically cracking each injecter a bit with cranking until the bubbles were out and move to the next one down the line. Then with it WOT, crank for 20 sec bursts until it starts.

Then, I'd make a promise to myself to change the fuel filter twice a year.:laughing:

Well, they are so inexpensive I bought a spare, and I will also remember to refill the bowl so I don't do this again!:thumbsup:

Thanks!