SERVICE MANUAL
CLEANING AND INSPECTION
Section 3
Part
Inspect For Following Condition(s)
Corrective Action When Required
Control Rack
Burrs on gear teeth or scratches along
Polish with crocus cloth. Replace if
sides.
any binding with housing exists.
Delivery Valve
Damage at delivery valve seat or
Replace complete assembly.
Assembly
needle.
Gaskets, Seats and
ALWAYS REPLACE WHEN REBUILDING PUMP
O-Rings
When replacing barrel lower spacer rings, spacer ring installer 9 681 238 902
must be used (see Reassembly’- Section 4, Page 1).
Transfer Pump
Fuel leakage past pump drive stem.
Replace as a complete unit only.
See NOTE*
Governor Housing
Cracks, stripped screw threads, burrs
Replace.
and Cover
on mating surfaces.
Governor Weight
Worn bell cranks, damaged weights,
Replace weight assembly as complete
Assembly
stripped adjusting nut threads, worn
unit. Weight springs and shims may
or damaged springs.
be replaced individually.
Governor
ADJUST AS OUTLINED BELOW.
*NOTE: Plug outlet side of transfer pump and pressurize inlet side with air to 103-137 kPa (15-20 psi). When submerged
in fuel oil, no air leaks are permitted past pump drive assembly.
GOVERNOR ADJUSTMENT
1.
Perform a static check on balanced movement
of governor weights by making a temporary
build-up less springs but using spring seats, trial
spacer bushings (obtained locally) and adjusting
nuts (Figure 1) on each weight as follows:
Figure 1. Details of Flyweight Assembly
1.
Governor Flyweight Assembly
2.
Spring Seat
3.
Trial Spacer Bushing
4.
Adjusting Nut
Install double-nutted thru-bolt in weight assembly. Apply
slight pressure to center of bolt and check for excessive
rocking movement in one or the other weights (Figure 2).
If excessive rocking does occur try using a different size
lower spring seat (available in three sizes). When
installing the three different size weight springs, remove
the trial spacer bushings.
Figure 2. Checking Flyweight Trail Build-Up
1.
Rocking Movement 3.
Trail Spacer
Bushing
2.
Through Bolt
4.
Adjusting Nut
CGES-375
Printed in United States of America
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