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Repairing John Deere Injectors

Repairing John Deere Injectors

REPAIRING JOHN DEERE 4440 INJECTORS

Our guess is the rust and nozzle wear on these John Deere 4440 Injectors is just from time, wear and tear and weather.

VISUAL CHECK

  • Repairing John Deere 4440 InjectorsRepairing John Deere 4440 Injectors

Damage to nozzle nuts, inlet thread and outlet surface – this can occur from wear and tear and weather

POP TEST TO CHECK SPRAY PATTERN AND PRESSURE

  • Repairing John Deere 4440 Injectors
  • Repairing John Deere 4440 Injectors

NOZZLE NUT PITTED AND CRACKED

  • Repairing John Deere 4440 Injectors

INJECTOR BODIES COME OUT OF ACID CLEAN AND ARE POLISHED. NEXT INTO SONIC CLEANER TO REMOVE SOME MORE SCALE, INTERNAL PARTS GO INTO A TEA STRAINER AND INTO SONIC CLEANER

  • Repairing John Deere 4440 Injectors
  • Repairing John Deere 4440 Injectors

NEW GENUINE BOSCH NOZZLE NUTS, PLATE AND NOZZLES

  • Repairing John Deere 4440 Injectors

PRESSURE IS SET TO 270BAR FOR THESE INJECTORS, SPRAY PATTERN IS THEN CHECKED .

  • Repairing John Deere 4440 Injectors
  • Repairing John Deere 4440 Injectors

WE CHECK EDGE FILTERS ARE CLEAN AND NOT BLOCKED, LAY PARTS OUT READY TO ASSEMBLE AND ADJUST PRESSURE USING SHIM THICKNESS. A MICROMETER IS USED TO MEASURE SHIMS.

  • Repairing John Deere 4440 Injectors
  • Repairing John Deere 4440 Injectors
  • Repairing John Deere 4440 Injectors

BEFORE AND AFTER INJECTOR REPAIR

  • Repairing John Deere 4440 Injectors
  • Repairing John Deere 4440 Injectors
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