Disassembly Of Oil Pump; Cleaning And Inspection - Yanmar 3TNV82A Service Manual

LUBRICATION SYSTEM

Disassembly of Oil Pump

CAUTION
If the oil pump must be replaced, replace
it as an assembly only. Do not replace
individual components.
Remove the engine cooling fan guard (if equipped),
engine cooling fan (Figure 9-15, (3)), spacer
(Figure 9-15, (2)), engine coolant pump V-pulley
(Figure 9-15, (1)) and V-belt.
(1)
Figure 9-15
1. Remove the crankshaft pulley and the gear
case cover. See Removal of Timing Gear Case
Cover on page 6-68.
2. Remove the oil pump assembly bolts. Remove
the oil pump assembly (Figure 9-16, (1)) from
the gear case housing (Figure 9-16, (2)).
9-14
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(3)
(2)
0000163C
(2)
Figure 9-16

Cleaning and Inspection

Wash the oil pump, oil pressure regulator and oil
pump cavity. Inspect for wear or damage. Replace
as necessary.
A
CAUTION
If any oil pump component clearance
exceeds its limit, the oil pump must be
replaced as an assembly.
Check Outer Rotor Outside Clearance
Determine the outside clearance of the outer rotor.
Insert a feeler gauge between the outer rotor
(Figure 9-17, (1)) and gear case oil pump cavity
(Figure 9-17, (2)).
(2)
Figure 9-17
Record the measurement(s) and see Check Outer
Rotor Outside Clearance on page 9-11 for the
service limits.
TNV DI Service Manual
Trochoid Oil Pump
(1)
0000049D
0000015en
(1)
0000045A