John Deere — Remove Fuel Injection Pump
Repair & overhaul
From a John Deere service manual — check it applies to your exact model before use.
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Before you start
- Never steam clean or pour cold water on an injection pump while it is still warm - may cause seizure of pump parts.
- JDE90 Serrated Wrench MUST BE used to keep delivery valve fittings stationary; if rotated, pump must be recalibrated on a test stand.
Procedure
- Clean injection lines and area around the injection pump.
- Remove timing hole plug.
- Rotate engine until No. 1 piston is at TDC compression stroke; timing pin should enter hole in flywheel.
- Install JDG886 Timing Pin through hole in drive gear and thread into pump hub until it bottoms.
- Remove four injection pump drive gear cap screws using T45 TORX adapter and remove drive gear.
- Disconnect governor pigtail connectors and fuel shut-off solenoid lead.
- Disconnect lines (lube line, fuel inlet, leak-off, supply pump lines) and remove injection line nuts from delivery valves.
- Remove four mounting stud nuts and carefully remove pump; cap all delivery valve fittings.
Tools required
- JDG820 Flywheel Turning Tool Amazon
- JDE81-4 Timing Pin Amazon
- JDG886 Injection Pump Timing Pin Amazon
- T45 TORX adapter Amazon
- JDE90 Serrated Wrench Amazon
- JDF22 Crowsfoot Wrench Amazon
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Specs & values
- Injection pump-to-cylinder block stud nuts 47 N-m (35 lb-ft)
- Drive gear-to-pump hub cap screws 61 N-m (45 lb-ft)
Source: John Deere service manual. Steps and values are as documented; always cross-check against the official manual and any later revisions for your exact serial number before servicing.