MTU — Injection pump removal and installation
Repair & overhaul · Injection pump / HP pump
From a MTU operator's manual covering: 12V 2000 G23, 12V 2000 G43, 12V 2000 G63, 12V 2000 G83, 16V 2000 G23, 16V 2000 G43, 16V 2000 G63, 16V 2000 G83, 18V 2000 G63, 18V 2000 G83. Check it applies to your exact model before use.
Applies to: MTU 12V 2000 G43 engine, MTU 12V 2000 G83 engine, MTU 16V 2000 G43 engine, MTU 16V 2000 G83 engine, MTU 18V 2000 G83 engine
Before you start
- Unguarded rotating and moving engine components.
- Fuels are combustible; risk of fire and explosion.
Procedure
- Shut off fuel supply line before fuel filter; remove engine control system; drain fuel; remove charge-air manifold and all seals.
- Mark installation position of injection pump.
- Disconnect wiring from injection pump.
- Remove fuel line.
- Remove injection pump securing screws.
- Pull out injection pump; remove sealing rings; cover installation bore.
- Clean mating face of injection pump and roller.
- Coat new sealing rings with petroleum jelly and set onto injection pump; coat roller with engine oil.
- Clean sealing face and installation bore on crankcase.
- Use barring tool to align camshaft pump cams with base circle.
- Install injection pump observing marked position; tighten to 60 Nm +/- 12 Nm.
- Install fuel line; tighten locknuts of fuel line to 20 Nm +/- 5 Nm.
- Install injection pump wiring; tighten screws to 1.0 Nm +/- 0.2 Nm.
- Replace charge-air manifold and seals; install engine control system; open fuel supply; vent fuel system.
Tools required
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Specs & values
- Injection pump 60 Nm +/- 12 Nm
- Fuel line locknuts 20 Nm +/- 5 Nm
- Wiring screws 1.0 Nm +/- 0.2 Nm
Source: MTU operator's 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.