4.2.2 Oil pump
Disassembly
(1) Disassembly of oil pump drive gear
a. Unscrew the screw and disassemble the oil relief
valve.
b. Unfold the washer for the oil pump drive gear fixing
nut and remove the nut.
c. Disassemble the drive gear.
(2) Remove the oil pump cover fixing nuts and
disassemble the oil pump cover.
The oil pump cover is fixed with the two dowel pins.
(3) Disassemble the drive gear and driven gear.
Inspection and correction
(1) With steel rule and feeler gauge, measure the axial
end play of the oil pump gear. Replace if the
measured value is beyond the limit.
(2) With a feeler gauge, measure the amount of
backlash between the oil pump drive gear and driven
gear. Replace if the measured value is beyond the
limit.
5ton Diesel Engine SPC000006
Page 95
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