Chapter V GW4D20 / GW4D20B Turbocharged Diesel Engine
Great Wall Baoding Internal Combustion Engine
Manufacturing Company Limited
339
Fig. 5-17-5 Removing the front oil seal of
crankshaft
Removing the front oil seal of crankshaft
⑥
(1) Use an oil seal remover or a plastic hammer and a
screwdriver to knock around the front oil seal of crankshaft
and then remove it from the hole on the engine oil pump, as
shown in Fig. 5-17-5.
Front oil seal remover: 5-8840-2362-0.
Attention:
Do not damage the mating surface of the
front oil seal of crankshaft when removing it.
(2) Check the front oil seal of crankshaft. Replace it in case
of any deformation or damage.
Fig. 5-17-6 Installing the front oil seal of
crankshaft
Fig. 5-17-7 Installing the timing pulley of
crankshaft
Installation
Installing the front oil seal of crankshaft
⑥
(1) Apply an appropriate amount of lubricating oil to the
front oil seal of crankshaft.
Mobil API CI-4 lubricating oil
(2) Press the front oil seal of crankshaft into the
corresponding hole on the engine oil pump with special
tools. See Fig. 5-17-6.
Installer of front oil seal: 5-8840-2361-0.
(3) After installation, check the oil seal. Any scratch,
deflection or poor installation is forbidden.
Installing the timing pulley of crankshaft
⑤
(1) Install the woodruff key onto the crankshaft, install the
timing pulley of crankshaft to the crankshaft, and then
tighten the fastening bolts to the specified torque. See Fig.
5-17-7.
(2) After installation, check whether the timing pulley of
crankshaft is installed properly and without deflection.
Tightening torque for the fastening bolt of crankshaft
timing pulley
185N·
m~195N·
m
Installing the timing belt
④
(1) Install the timing belt. During the installation, make sure
the belts, except the tension pulley, are connected with the
pulley firmly and without any looseness. See Fig. 5-17-8.
(2) Install the timing tension pulley: Fix the limit bracket of
Engine oil
pump
Front oil seal
of crankshaft
Crankshaft
Engine oil pump
Front oil seal of
crankshaft
Timing belt
