FUEL FILTER

Refer to the maintenance schedules for the recommended fuel filter replacement intervals (Refer to LUBRICATION & MAINTENANCE/MAINTENANCE SCHEDULES - DESCRIPTION).

The gear supply pump located in the back of the high pressure pump draws fuel from the fuel tank, through the fuel filter and into the high pressure pump. Restricted fuel filters may cause hard starting, no starting, and or white smoke.

Testing The Filter For Restrictions

NOTE: There can not be any visible signs of fuel leakage at the filter outlet line or fitting during testing. If a fuel leak is detected, STOP testing, remove special tool fitting #9745, and replace both fuel line washer seals.