Section 03-01D: Engine, Diesel, 7.3L
1996 F-Series Workshop Manual
CLEANING AND INSPECTION

Oil Pump Inspection

 
 

Pressure Test

  1. NOTE: Before removing low-pressure oil pump, perform the oil pump pressure test procedure as follows:

    Attach oil pressure gauge to an accessible oil galley port.

  1. Start engine, observe oil pressure gauge. Oil pressure reading should be between 69-276 kPa (10-40 psi). If readings are below the specifications, remove the low-pressure oil pump. Refer to Oil Pump in the Removal and Installation portion of this section. Then perform the following inspection steps:

 

Clearance Test

  1. Inspect low-pressure oil pump (6600) for excessive metal particles.

  1. Inspect oil pump front cover for gouging or deep scratches.

  1. Inspect the oil pump inner and outer rotor for damage or excessive wear.

  1. Using a straightedge and feeler gauge, measure the height clearance between the oil pump housing and the inner rotor and outer rotor.

  1. Using a feeler gauge, measure the clearance between the outer rotor and oil pump housing.

    ItemPart NumberDescription
    1—Straightedge
    26616Oil Pump Housing
    36608Rotor and Shaft Set
    4—Feeler Gauge
    A—0.025-0.080mm (0.001-0.003 In.)
    B—0.720-0.810mm (0.028-0.032 In.)