[AT] Help needed on non-antique tractor

[k7jdj at aol.com]

Cecil,

On some injection pumps you can take the fuel solenoid off, then remove the plunger so the engine won't shut off.  Put the solenoid back and leave the wire disconnected - sort of a way to hot wire if the solenoid fails.  Of course shutting the tractor down could be a problem.  Some pumps have a mechanical fuel shut off in addition to the solenoid.  

Gary
Renton, WA

 

 

 

-----Original Message-----
From: Cecil R Bearden <crbearden at copper.net>
To: Antique tractor email discussion group <at at lists.antique-tractor.com>
Sent: Tue, Sep 3, 2013 6:28 am
Subject: Re: [AT] Help needed on non-antique tractor


TS100 New Holland 2 WD tractor w/ 16x16 trans cab w/air loader attached. 
Engine starts easily and seems to rev up to full throttle ok.. When 
slightly loaded it begins to pull down and acts as if there is no 
governor available. Tractor has 2293 hours and uses no oil. I have 
replaced the fuel lift pump twice in last week and replaced filters. It 
has a Delphi inj pump installed at about 1550 hours. Tractor is serviced 
and maintained regularly. When connected to 648 New Holland Baler, It 
will barely go up an incline when baling. When traveling in high gear on 
roadway, it will pull down to 1500 RPM on slight incline. Works fine for 
about 5 minutes after starting, then begins to have no power. After 
running about 30 minutes, I could lay my hand on the injector pump, but 
the fuel shutoff solenoid almost burned my finger.

The fuel pump on this tractor was replaced, not rebuilt with a new 
Delphi pump 743 hours ago. I have kept the filters changed and the fuel 
clean, so I cannot believe the pump needs rebuilding unless the Delphi 
pump is a pile of crap to start with. The original pump self destructed 
at 1550 hours, requiring a new pump.   Pump shop stated the pump had 
been tampered with causing a bolt to beak internally.  The load is not 
excessive as the tractor was pulling the same load fine 2 days earlier. 
I have sealed all possible leaks around the primary filter, and find no 
wet spots when pressurizing the tank. Is it possible that the shut off 
solenoid is bad since it is getting hot. The shutoff solenoid is a 
plunger at the back of the pump near the distributor head. I am about to 
pull the tank and check the intake line in the tank, it is all that is 
left.

This is my only tractor left with a 1000 RPM PTO that can pull my 
swather and also has the electronic baler monitor attached...   A cat 
mechanic thought maybe an injector was pressurizing the return line 
causing the fuel solenoid to get hot.  It does not seem to be missing.  
It seems that all these problems started after I drained the fuel bowl 
in the primary sediment bulb.  I have sealed it totally now, so should 
not be the problem.

Cecil in OKla



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