Doosan DX60R Shop Manual page 310

Disassembly of Engine
Prepare a clean, flat working surface on a workbench large
enough to accommodate the engine components. Discard all
used gaskets, O-rings and seals. Use new gaskets, O-rings
and seals on reassembly of engine.
Identify all parts and their location using an appropriate
method. It is important that all parts are returned to the
same position during the reassembly process.
If the engine will be completely disassembled, the following
preliminary steps should be performed:
1. Disconnect the battery cables at the battery. Always
disconnect the negative (-) cable first.
2. Remove the throttle cable, electrical connections, intake
and exhaust system connections, and fuel supply lines
from the engine.
3. Remove the alternator. See "Removal of Alternator" on
page -246
4. Drain the engine coolant from the radiator and cylinder
block. See "Adjust Intake / Exhaust Valve Clearance" on
page -86 Remove the cooling system components from
the engine.
5. Remove the engine from the machine. Mount the engine to
a suitable engine repair stand having adequate weight
capacity.
Be sure to secure the engine solidly to prevent injury
or damage to parts due to the engine falling during
work on the engine.
6. Clean the engine by washing with solvent, air or steam
cleaning. Carefully operate so as to prevent any foreign
matter or fluids from entering the engine or any fuel system
or electrical components remaining on the engine.
7. Drain the engine oil into a suitable container. Remove the
oil filter.
8. Remove the cylinder head. See page -106.
9. Remove the fuel injection pump from the gear case / front
plate only if it must be sent out for repair, or will interfere
with other procedures such as "hot tank" cleaning. If the
fuel injection pump does not need to be repaired, leaving
it mounted to the timing gear case or plate will eliminate
the need to re-time it during reassembly. See "Fuel
Injection Pump" on page -180
10. Remove the starter motor. See "Starter Motor" on
page -223
Engine
Page 130
CAUTION
CAUTION
SP001693