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DISASSEMBLE AND ASSEMBLE PILOT PUMP
REMOVE AND INSTALL PILOT PRESSURE REGULATING VALVE AND FILTER

Technical Manual For Hydraulic Excavator Model 330Lcr 2
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TM 5-3805-281-24-2
Hydraulic System
A--Pump Housing
E--Bushing (2 used)
J--Backup Retainer (2
M--Oil Seal
B--Pin (2 used)
F--Key (2 used)
used)
N--Snap Ring
C--Bushing (2 used)
H--Gear
K--O-Ring (2 used)
O--Washer (4 used)
33
D--Gear
I--Seal (2 used)
L--Flange
P--Cap Screw (4 used)
3360
55
1. Remove cap screws (P) and washers (O) to
remove end plate and flange (L) from pump
housing (A).
CED,OUOE027,304
1905JUN982/3
2. Remove drive gear (A), driven gear (C), bushings (D)
and keys (B).
3. Check bushings (D). If inside diameter and surface
toward gear are rough or worn, replace pump.
4. Check gears (A and C) and housing. If gear teeth,
shaft, and inside of housing is rough or worn, replace
pump.
IMPORTANT: Apply clean hydraulic oil to all parts.
Pump failure can result if pump is
assembled dry.
A--Drive Gear
B--Key (4 used)
5. Apply clean hydraulic oil to all parts.
C--Driven Gear
D--Bushing (4 used)
6. Apply grease to lip of oil seal. Install oil seal with lip
(spring side) toward inside of housing.
7. Install cap screws (P) and washers (O) and tighten.
Cover-to-Flange Cap Screw--Specification
Torque ............................................................................. 41 Nm (31 lb-ft)
8. Do Pilot Pressure Regulating Valve Test and
Adjustment to check pressure setting. (See procedure
in Group 9025-25.)
CED,OUOE027,304
1905JUN983/3
19-91


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