Chpter IV Mechanical System
Great Wall Baoding Internal Combustion Engine
Manufacturing Company Limited
199
Fig. 4-6-8 Checking the rotor and pressure
limiting valve of engine oil pump
Fig. 4-6-9 Installing the engine oil pump
assembly
Reassembly
Reinstalling the engine oil pump assembly
⑤
(1) Coat a small amount of lubricating oil to the seal ring
of engine oil pump, and install the seal ring into the
corresponding groove on the engine oil pump housing.
There should
be
no
scratch,
deflection and
misplacement.(2) Coat the front oil seal of crankshaft
with lubricating oil, and install it into the front oil seal
hole of the engine oil pump housing. After the
installation, there should not be scratch, deflection or
misplacement.
(3) Apply an appropriate amount of lubricating oil to the
inner surface of engine oil pump external rotor, and
install the external rotor into the engine oil pump cavity
of the upper cylinder body, with the marked side facing
the bottom of pump cavity of cylinder body. See Fig.
4-6-8.
Mobil API CI-4 lubricating oil
(4) Assemble the engine oil pump assembly and
cylinder body. Tighten the 10 hexagon bolt and plain
washer components (M8×40, M8×25 and M8×20) as
well as the 4 hexagon flange face bolts (M8×25 and
M8×45) as per the specified order and torque. See Fig.
4-6-9.
Tightening torque for fastening bolt of engine oil
pump
23N·
m±3N·
m
There should be no stagnation when the engine oil
pump pulley is rotating after the installation.
Fig. 4-6-10 Installing the lower body of oil pan
and tightening of bolts
Reinstalling the lower body assembly of oil pan
④
(1) Check the junction surface between the upper and
lower bodies of oil pan for dirt and scratch. Evenly coat
the junction surface with silicone plane sealant.
Install the oil pan lower body on the oil pan upper body.
Screw down the 14 hexagon flange face bolts (M6×12)
as per the specified order and torque. See Fig. 4-6-10.
LOCTITE 587 plane sealant.
Tightening torque for fastening bolt at lower body
of oil pan
9N·
m±3N·
m
Cylinder body
Engine oil
pump
assembly
