Diesel Injection Pump Timing, Checking and Adjusting

DIESEL INJECTION PUMP TIMING, CHECKING AND ADJUSTING

Checking and adjustment conditions
- Toothed belt tension OK.
- Cold Start Accelerator cable must not be pulled out (operating lever of fuel injection pump in 0 position).

- Set engine to TDC (No.1 cylinder).





Engine installed:
- Turn crankshaft until TDC mark on flywheel is aligned with mark on clutch housing.





Engine removed:
- Screw in adjusting tool as shown.
- Set the adjusting tool to 96.0 mm. The reference point is the graduation mark on the left of the vernier scale (arrow A).
- Rotate crankshaft until TDC mark on flywheel is aligned with the tip of the adjusting tool (arrow B).

Checking and adjusting
- Remove plug from injection pump head.

NOTES:
- Always replace plug seal.
- Tightening torque 15 Nm (11 ft lb).
- May be tightened to 25 Nm (18 ft lb) max. if leaks occur.





- Screw in adapter and small dial gauge (measuring range 0-3.0 mm) in place of plug and preload dial gauge to approx. 2.5 mm.
- Slowly rotate crankshaft against engine direction of rotation (anti clockwise) until the pointer of the dial gauge no longer moves.
- Set dial gauge to "0" with approx. 1 mm preload.
- Rotate crankshaft in engine direction of rotation (clockwise) until TDC marking on the flywheel is aligned with the reference mark.
- Read off start of delivery on dial gauge:
Test figure 0.75 - 0.85 mm lift
Setting figure 0.80 ± 0.02 mm lift

NOTE: No resetting is necessary provided the test figure is within the specified tolerance.

- To adjust, loosen the three bolts on the bracket and the securing bracket on the rear support.
- Adjust start of delivery to the specified figures by turning the injection pump using adjusting lever -3210-.
- Tighten mounting bolts to 25 Nm (18 ft lb).