Symptom: Cylinder 3 would not fire.
Cause: Injection pump plunger worn and could not deliver sufficient pressure for injector to fire during compression. Tractor did not have fuel filter in fuel line. Recent new to me acquisition so I do not know how long tractor ran without filter.
Solution: 1) Buy new pump - I did not get price; 2) Buy used pump $350 with one year warranty; 3) Have pump professionally rebuilt - Cost $650-750; 4) Rebuild pump myself.
I chose option 4. Trying to get cylinder 3 to fire, I swapped injectors and delivery valves with no success. So I took injection pump out and apart. Being careful to replace parts the way I took then out, I was able to swap plungers for cylinder 3 with cylinder 1. The plunger swap now caused cylinder 1 not to fire and I found my problem.
This is a Diesel Kiki pump. Here are all of the numbers off of the pump tag: D860674 NP PFR3KD50/2NP4 License Bosch Assembly No 4293-300 15381-51011. Diesel Kiki changed its name to Zexel under a Bosch license, I think. I got my parts from Bosch. Three of each: delivery valves, delivery valve springs, copper crush washers, plungers and plunger springs. Cost with tax was $418.
Bosch used the 15381-51011 number to pull up the current parts list. The current Zexel pump number is 104293-3001 and the Bosch pump number is 9 410 617 013. I have the parts schematic and individual part numbers if anyone needs them. One little caveat: when I got my delivery valves and plungers, they appeared way bigger than the ones I pulled from the pump. After much consternation and consultation with Bosch experts, Bosch opened a plunger and they were an exact match. The thick protective plastic that the plunger was encapsulated in and its plastic bag only made it appear bigger.
The pump rebuild does not require any special equipment and involves only the installation of delivery valves, plungers and springs in a clean environment. The only spec is the delivery valve holder torque which is 32 ft/lbs. There are no shims that need to be calibrated like with an injector.
The other part of the assembly that needs careful attention is the control sleeve, which has a notch and that notch/mark must line up with the timing line/mark on the control rack. I've attached a pdf of the marks.
Cause: Injection pump plunger worn and could not deliver sufficient pressure for injector to fire during compression. Tractor did not have fuel filter in fuel line. Recent new to me acquisition so I do not know how long tractor ran without filter.
Solution: 1) Buy new pump - I did not get price; 2) Buy used pump $350 with one year warranty; 3) Have pump professionally rebuilt - Cost $650-750; 4) Rebuild pump myself.
I chose option 4. Trying to get cylinder 3 to fire, I swapped injectors and delivery valves with no success. So I took injection pump out and apart. Being careful to replace parts the way I took then out, I was able to swap plungers for cylinder 3 with cylinder 1. The plunger swap now caused cylinder 1 not to fire and I found my problem.
This is a Diesel Kiki pump. Here are all of the numbers off of the pump tag: D860674 NP PFR3KD50/2NP4 License Bosch Assembly No 4293-300 15381-51011. Diesel Kiki changed its name to Zexel under a Bosch license, I think. I got my parts from Bosch. Three of each: delivery valves, delivery valve springs, copper crush washers, plungers and plunger springs. Cost with tax was $418.
Bosch used the 15381-51011 number to pull up the current parts list. The current Zexel pump number is 104293-3001 and the Bosch pump number is 9 410 617 013. I have the parts schematic and individual part numbers if anyone needs them. One little caveat: when I got my delivery valves and plungers, they appeared way bigger than the ones I pulled from the pump. After much consternation and consultation with Bosch experts, Bosch opened a plunger and they were an exact match. The thick protective plastic that the plunger was encapsulated in and its plastic bag only made it appear bigger.
The pump rebuild does not require any special equipment and involves only the installation of delivery valves, plungers and springs in a clean environment. The only spec is the delivery valve holder torque which is 32 ft/lbs. There are no shims that need to be calibrated like with an injector.
The other part of the assembly that needs careful attention is the control sleeve, which has a notch and that notch/mark must line up with the timing line/mark on the control rack. I've attached a pdf of the marks.
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