LUBE OIL PUMP ASSEMBLY REPAIR (CONT).
Repair of lube oil pump is limited to replacement of damaged or worn parts.
Install bypass valve (1) as follows:
The DFC pressure valve fixture consists of a locating plate and reversible mandrel. The
plate installs over the bypass valve bore, located in the oil pump body, with two
Install locating plate (2) on pump body (3) using two
5/16-18UNC x 1-1/4-inch capscrews (4) screwed in
Install large diameter end of mandrel (5) through
locating plate and into bypass valve bore.
Tighten two capscrews (4) and remove mandrel (5).
Install bypass valve spring (6), washer (7), valve disc
(8), and retaining plug (9) through locating plate (2) into
valve bore being sure that prongs on disc face down
and cupped side of retaining plug is up.
Install small end of mandrel (5) in bore of locating plate
Press mandrel (5) with arbor press until large diameter
of mandrel is against locating plate (2).
Remove locating plate (2).