Doosan G20P-5, Service Manual, Page: 83 / 306

G424F(FE) Service Manual Chapter 3. Engine Mechanical System 81
Engine Disassembly
Removal
Remove or disconnect
1.
Engine assembly, as per instructions under
“Engine Assembly – Removal”, in this Section.
2.
Generator attaching bolts, with a 13-mm wrench;
remove the generator.
3.
Power steering pump attaching bolts, with a 13-
mm wrench; remove the pump.
4.
Exhaust manifold nuts, with a 13-mm socket
wrench, extension and handle; remove the
exhaust manifold.
5.
Intake manifold nuts, with a 13-mm socket wrench,
extension and handle; remove the intake manifold.
6.
Crankcase vent tube attaching bolt, with a 13-mm
socket wrench, extension and handle; remove the
crankcase vent tube.
7.
Align the camshaft timing pulley mark with the
timing belt rear cover mark.
8.
Align the crankshaft timing pulley mark with the oil
pump case flange mark.
9.
Timing pulley front cover attaching bolts, with a
10- mm socket wrench, extension and handle;
remove the front cover.
10.
Timing belt Tensioner bolt, to relieve the tension
of the belt, with a 13-mm combination wrench;
remove the timing belt.
Obs.:
Turn the crankshaft 45° clockwise, so as to
prevent damaging the engine and cylinder head
inner components.
11.
Camshaft cover attaching bolts, with a 10-mm
socket and handle; remove the camshaft cover.
12.
Camshaft pulley attaching bolt, using a 17-mm
combination wrench and a 22-mm wrench to
attach the camshaft; remove the camshaft pulley.
13.
Install tool S-9407182 and attach the engine
flywheel; with a 19-mm combination wrench,
attach the tool bolt.
14.
Crankshaft timing pulley attaching bolt, with a
17-mm socket wrench and handle; remove the
bolt.
15.
Crankshaft timing pulley.
Obs.:
If necessary, install gear puller using proper
bolts which are supplied with the tool. With a 19-mm
combination wrench, turn the tool bolt until removing
the crankshaft timing pulley.
16.
Timing belt expander, removing the already
loose attaching bolt.
17.
Timing pulley rear cover attaching bolts, with a
10-mm socket wrench; remove the rear cover.
18.
Thermostat housing attaching bolts, with a 13-
mm socket wrench and handle; remove the
thermostat housing.
19.
Thermostat housing seal ring.
20.
Water pump attaching bolt, with a 6-mm Allen
wrench and handle; remove the water pump and
seal washer.
Obs.:
Put a mark on the water pump to engine block,
to identify the assembly position.
21.
Crankshaft position sensor attaching bolt, with a
Torx E10 and handle; remove the crankshaft
position sensor.