JD 345 1995

   / JD 345 1995 #11  
Sounds like the right track to me ---- make sure that the new fuel pump has the drain hose that lets any future pump leak drain to the ground as opposed to letting it drip on the muffler.
 
   / JD 345 1995 #12  
I removed the circuit board disconnected all plug ins and found dirt caked to the solder connections. Cleaned them with carb. cleaner and wire brushed all connections.
 
   / JD 345 1995
  • Thread Starter
#13  
The new fuel pump was not the problem. Lessions learned: I should have taken the old pump, stuck a piece of fuel line to it and placed the line in a container of fuel, manually actuated the rocker arm and saw if it pumped fuel...the old pump did exactly that. THEN, I should have cranked the engine with no fuel pump on and observed if the plunger that comes out of the engine actually was moving. The new pump is on and on the assumption that it is (also) a working pump, I'm thinking the plunger is not going in-and-out to operate the pump. So, what kind of a repair would this en tale? A partial engine take down, I assume? What internal mechanism causes that plunger to operate? The only other thing I can think of (before putting the tractor away for a year and tear into the engine later) might be replacing the fuel linr from the tank to the inlet of the pump. I assume since this is a pulling pump (as opposed to an electric pushing pump inside the fuel tank), any air leak in the fuel line might be preventing the pump from picking up prime?
 
   / JD 345 1995 #14  
The camshaft drives the fuel pump ------ you're saying that it's not pumping any fuel???

Did you ever check for valve train movement ----- pull off a rocker cover and see if you have any valve movement at all --------------
 
   / JD 345 1995 #15  
The camshaft drives the fuel pump ------ you're saying that it's not pumping any fuel???

Sounds to me like the dreaded "plastic camshaft gear" issue. Your model year and hours are right about where the failure usually occurs. Search the threads on this forum for more info on the camshaft gear and how to replace it with the updated model.

WARNING:
If it IS the camshaft gear be ready for an expensive bill (anywhere from $700-$1200 depending on how much you replace and whether you do it yourself or have a dealership do it). On the plus side once this repair is made the machine is pretty much bulletproof.
 
   / JD 345 1995
  • Thread Starter
#16  
Tried gravity feeding fuel to the carb...no success. Took off the valve cover and no rocker arm movement. Took out a plug and checked that pistons are going up and down (they are). So, I reckon it's the infamous plastic camshaft gear. Pulled the tractor into the barn to be considered for repair or scrap next off-season. Thanks all for your help and suggestions!
 

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