TSE DPT40-B, Owner'S Manual

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Series 90 Minor Repair Instructions 9
Remove Retainer Screws Remove Charge Pump
Cover
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9.2.4 Charge Pump
The following procedure shows how to remove and
install a charge pump.
1. For pumps with an auxiliary mounting pad, re-
move the four screws holding the pad to the end
cap and remove the pad. Refer to the Auxiliary
Mounting Pad Installation instructions (next sec-
tion) for details.
NOTE: Late production pumps may not have the
smaller screws installed to secure the end cap to
the pump housing when the large screws are
removed. On these pumps, secure the end cap to
the pump housing with a clamp to avoid gasket
damage.
CAUTION
Do not allow the force of the cylinder block
spring and swashplate leveler springs to sepa-
rate the end cap from the pump housing. Gas-
ket damage and external leakage may result.
2. Using a 10 mm (030 through 100 pumps) or a 13
mm (130 through 250 pumps) hex wrench, re-
move the six screws holding the charge pump
cover retainer.
3. Remove the retainer and the charge pump cover.
For pumps with an auxiliary mounting pad, re-
move the auxiliary drive coupling. Note the orien-
tation of the gerotor.
(continued)
Gerotor Assembly
Outer Eccentric Ring
Inlet
Discharge
Left Hand Rotation
(Outside Looking Into Pump)
Alignment Pin
Outer Eccentric Ring
Inlet
Discharge
Alignment Pin
Gerotor Assembly
Right Hand Rotation
(Outside Looking Into Pump)
Orienting Gerotor Outer
Ring and Alignment Pin
(CW Rotation)
Orienting Gerotor Outer
Ring and Alignment Pin
(CCW Rotation)
90000871
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