Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Injection Pump Timing
- Disconnect fuel injection pipes from fuel injection pump. Remove the hydraulic head plug from the pump. Align the timing mark (2° ATDC) on the crankshaft pulley with the indicator pin by turning the crankshaft.
- Mount the injection timing measuring device (49 9140 076) into the hydraulic head plug hole. With the tip of the measuring tool firmly against the pump plunger, set the dial indicator to read about 0.08" (2 mm). See Fig 1.
Dial indicator should read about 0.04" (1 mm) when timing mark is aligned with pointer.
- Turn the crankshaft pulley slowly counterclockwise (in reverse direction of engine rotation) about 30-50°. Make sure the dial indicator pointer stops.
- Set the dial indicator pointer to zero. Turn the crankshaft slightly left and right to make sure that the indicator pointer does not move from zero.
- Turn the crankshaft pulley clockwise (in direction of engine rotation) to align timing mark with indicator pin. If timing is adjusted correctly dial indicator will read 0.04" ±0.0008" (1 mm ±0.02 mm) when the timing mark is aligned with the indicator pin.
- If timing is not to specifications, loosen injection pump attaching nuts and bolt. Turn injection pump housing until dial indicator reading is correct.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.
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