ENGINE AR-COMPLETE 2251523 - Caterpillar

For example, a 3306 engine with six 4P-9827 Pump Groups in the top level pump group, and a static timing specification of 6.2 degrees BTC, requires a dynamic timing reading of 9.0 degrees at 1000 rpm engine speed.After the initial checking of the fuel pump injection timing with the dynamic timing indicator, use trial and error to readjust the timing, and repeat the measurement. Use a tolerance of " 0.5 degrees" when setting the final engine static timing to factory specification. After resetting the engine timing by adjusting the fuel pump drive gear position on the fuel pump camshaft taper, the timing pin may or may not fit into the slot in the fuel pump camshaft with the flywheel pinned. This is a natural consequence of using the dynamic timing indicator to set timing rather than the less accurate pin timing method. COPYRIGHT 1998 CATERPILLAR ALL RIGHTS RESERVED