Injection Pump Timing
- Check that notched lines on injection pump flange and injection pump front bracket are aligned. With No. 1 cylinder at TDC on compression stroke, check timing mark alignment of timing gears. See Figure .
- Disconnect injection pipe from pump and remove hydraulic head plug. Rotate the crankshaft pulley until the 2°ATDC mark on the pulley is aligned with the pointer. Install a dial indicator so that the pointer touches the plunger end of the pump, and dial gauge indicates approximetly .08" (2.0 mm).
- Turn crankshaft counterclockwise (opposite of engine rotation) until timing mark on crankshaft pulley moves from the original position (2°ATDC) to the counterclockwise side by 30-50°. See Fig 1 .
- Ensure that the dial indicator pointer has stoped moving. Zero dial indicator. Turn crankshaft pulley slightly in both directions and check that gauge indication is stable.
- Turn crankshaft in normal direction of rotation until timing mark is aligned with timing pointer. Dial indicator should read .04" (1.0 mm).
- If indicator reading is not within specifications, loosen the injection pump flange retaining nuts, and rotate housing until correct specifications are obtained. Tighten nuts and recheck reading.