Injection Pump Timing

Fig. A Diesel Engine Performance Specifications:

NOTE: Refer to ``Diesel Engine Performance Specifications'' for specified injection pump timing.

1. Check that alignment mark on injection pump flange is aligned with mark on front plate.

Fig. 6 Timing mark locations.:

2. Bring cylinder No. 1 to TDC on compression stroke by turning crankshaft in direction of rotation until TDC mark on pulley aligns with pointer, Fig. 6.
3. Remove timing pulley housing cover removed, ensure timing belt is properly tensioned and all timing marks are aligned.

Fig. 4 Static timing gauge, J-28827, installed:

4. Disconnect injection pipe from injection pump, then remove distributor head screw and gasket. Install static timing gauge J-28827, Fig. 4. Set the gauge lift approximately .040 inch (1 mm) from the plunger.
5. Bring No. 1 piston to a point 45-60 degrees BTDC by turning the crankshaft, then set dial indicator to zero. Turn crankshaft slightly in both directions to ensure dial indicator reading is stable.
6. Turn crankshaft in normal direction of rotation until the timing marks are aligned, Fig. 6, as specified in ``Diesel Engine Performance Specifications.''

Fig. 5 Injection pump flange nuts:

7. Note reading on dial indicator. If reading is not .020 inch (.5 mm), hold crankshaft in position, then loosen two nuts on injection pump flange, Fig. 5.
8. Adjust pump as necessary to obtain a dial indicator reading of .020 inch (.5 mm), then tighten nuts.