MAINTENANCE MANUAL OF GW4D20/GW4D20B TURBOCHARGED DIESEL ENGINES
274
Great Wall Baoding Internal Combustion Engine
Manufacturing Company Limited
Fig. 5-9-2 Removing the earthing cable of
storage battery
Fig. 5-9-3 Removing the engine accessories
Fig. 5-9-4 Removing the timing system
Removal
Preparation
(1) Remove the earthing cable of storage battery. See
Fig. 5-9-2.
(2) Discharge the coolant from engine and radiator.
Warning:
The coolant is poisonous, thus must be
stored in the original container to avoid the direct touch
from human.
Removing the engine accessories
①
(1) Remove the generator belt
Turn the tension pulley with tools until the belt is loose
enough, and then remove the generator belt.
(2) Remove the wedge idle wheel assembly
Loosen the fastening bolts of the wedge idle wheel, and
then remove the wedge idle wheel assembly. See Fig.
5-9-3.
Removing the timing system
②
(1) Remove the timing hood component 1 and timing
hood: unscrew 10 hexagon flange face bolts (M6 × 16,
M10 × 35 and M10 × 50) fastening the timing hood
component 1 and timing hood on the front end of the
engine, and take off the timing hood component 1 and
timing hood. See Fig. 5-9-4.
(2) Remove the timing tension pulley.
(3) Remove the timing belt.
(4) Remove the camshaft timing pulley. See Fig. 5-9-4.
Removing the fuel inlet pipes of fuel injector and
fuel rail
③
(1) Loosen evenly the pipe connectors fastening both
ends of the fuel injector fuel inlet pipes with a spanner,
and take off the fuel inlet pipe of the fuel injector. See
Fig. 5-9-5.
(2) Loosen evenly the pipe connectors fastening both
ends of the fuel injector fuel inlet pipes with a spanner,
and take off the fuel inlet pipe of the fuel rail. See Fig.
5-9-5.
Attention:
