highway32south
New member
My NH TC-35D started hesitating, then just died. Suspecting a fuel issue, I emptied the fuel filter bowl and cleaned the filter. There was some sludge in there. I replaced the filter and bowl, made sure to allow fuel to rise all the way to the top before tightening down the bowl, then commenced to loosen the lines at the fuel injector pump. Turned over the engine...nothing. By removing and replacing fuel lines, I traced the problem back to the fuel pump...fuel goes in, nothing comes out, even when cranking.
Now this is when I (a VERY novice mechanical guy) started doing some research just to be sure I wasn't ordering parts I didn't need. I found mention of a "fuel pump relay." Now the picture I've hopefully attached correctly shows the fuel pump as pictured on Messick's website. I haven't taken mine out of my tractor yet, but this looks pretty much like it.
I see no electrical connection anywhere for a relay to engage or disengage the pump. I know there's a solenoid on the fuel INJECTOR pump, which definitely would have a relay or fuse, but not just the fuel pump. So, finally......the questions:
1. Am I right in assuming that this fuel pump is mechanically operated and that there's no "relay?"
2. Do these things go bad often? Would water or sludge screw them up to the point to where they need replacing?
3. Is there a way to clean/flush/repair these things?
4. Does anyone agree that the pump is most likely the culprit?
5. Last but not least...can I, the aforementioned non-mechanically inclined guy, replace this thing without totally screwing up my tractor?
'preciate any help I can get!
Now this is when I (a VERY novice mechanical guy) started doing some research just to be sure I wasn't ordering parts I didn't need. I found mention of a "fuel pump relay." Now the picture I've hopefully attached correctly shows the fuel pump as pictured on Messick's website. I haven't taken mine out of my tractor yet, but this looks pretty much like it.
I see no electrical connection anywhere for a relay to engage or disengage the pump. I know there's a solenoid on the fuel INJECTOR pump, which definitely would have a relay or fuse, but not just the fuel pump. So, finally......the questions:
1. Am I right in assuming that this fuel pump is mechanically operated and that there's no "relay?"
2. Do these things go bad often? Would water or sludge screw them up to the point to where they need replacing?
3. Is there a way to clean/flush/repair these things?
4. Does anyone agree that the pump is most likely the culprit?
5. Last but not least...can I, the aforementioned non-mechanically inclined guy, replace this thing without totally screwing up my tractor?
'preciate any help I can get!