MAINTENANCE MANUAL OF GW4D20/GW4D20B TURBOCHARGED DIESEL ENGINES
366
Great Wall Baoding Internal Combustion Engine
Manufacturing Company Limited
Fig. 5-20-5 Removing the engine accessories
Removing the engine accessories
③
.
(1) Remove the tension pulley.
(2) Remove the flat idle wheel assembly and wedge idle
wheel assembly.
(3) Remove the steering pump bracket component.
(4) Remove the engine and the engine bracket. See Fig.
5-20-5.
Fig. 5-19-6 Removing the damping pulley
assembly
Fig. 5-20-7 Removing the timing system
Removing the damping pulley assembly
④
.
(1) Remove the 4 hexagon flange bolts (M8×20)
fastening the damping pulley at the front end of
crankshaft. See Fig. 5-20-6.
(2) Remove the damping pulley assembly from the front
end of crankshaft.
Removing the timing system
⑤
.
(1) Remove the timing hood components
Ⅰ
and II, the
timing hood and the timing rear hood: loosen
respectively the 15 hexagon flange bolts (M6×16,
M10×35,
M10×50)
fastening
the
timing
hood
components
Ⅰ
and II, and the timing hood, and remove
them from the cylinder head and the front end of
cylinder body. Loosen the hexagon flange bolt (M6×16)
fastening the timing rear hood and remove it from the
cylinder head. See Fig. 5-2-7.
(2) Remove the timing tension pulley assembly: loosen
the combined fastening bolt of timing tension pulley and
remove the timing tension pulley. See Fig. 5-20-7.
(3) Remove the timing belt.
(4) Remove the timing idle wheel assembly: unscrew
the fastening bolts of timing idle wheel, and remove the
timing idle wheel. See Fig. 5-19-7.
(5) Remove the camshaft timing pulley: loosen the bolt
gasket component of camshaft timing pulley and
remove the camshaft timing pulley.
(6) Remove the crankshaft timing pulley: loosen the
fastening bolt of crankshaft timing pulley and remove
the crankshaft timing pulley.
Damping pulley
Timing pulley of
crankshaft
