Westerbeke 120D-TWO Wartungshandbuch PDF herunterladen (Seite 14)

CYLINDER

HEAD

REMOVAL

Remove the engine heat exchanger. If possible, leave one

end

each hose connection attached

the part being

removed. For maintenance, see HEAT EXCHANGER.

Remove the starter motor. For starter motor repair, see

STARTER

MOTOR

Remove the flywheel.

4. Remove the engine backing plate.

5. Unbolt elbows at head and remove the exhaust manifold

its entirety. See EXHAUST MANIFOLD.

Remove the engine alternator and raw water pump.

Remove the engine mounted fuel filter and fuel line

injection pump. (Note the arrangement

sealing wash-

ers

on banjo bolts at fuel filter and injection pump.)

8. Remove the thermostat housing and the thermostat.

Leave temperature sending unit in place.

Remove the coolant circulating pump.

10. Remove the air intake silencer.

INTAKE

MANIFOLD

Now

the basic engine is ready for disassembly, cleaning, and

repair if necessary.

Remove the high pressure injector line assembly. When

disconnecting each injector line from the injection pump

side delivery valve holder, grasp the holder with a wrench

prevent it from loosening. After removing the pipe

assembly, plug the nozzle holders and delivery valve

holders to prevent intrusion

dust.

Disconnect the glow plug lead wire.

3. Loosen the fresh water pump drive belt and dismount the

belt, idler pulley and bracket.

Disconnect the air breather hose.

CYLINDER

HEAD

REMOVAL

Remove the rocker cover.

Remove the rocker shaft assembly.

Loosen the cylinder head mounting bolts equally and

gradually in the numerical order as illustrated and remove

the

cylinder head assembly (including the exhaust mani-

fold).

SEQUENCE

FOR

LOOSENING

CYUNDER

HEAD

BOLTS

SUB

!JOLTS

FRONT~

8. Lift the cylinder head off the engine.

Remove the cylinder head gasket. Clean the cylinder

head and the cylinder block surface from which the gas-

ket has been removed.

10. Remove the injector assemblies and glow plugs from the

cylinder head.

11. Remove the exhaust manifold from the cylinder head.

12. Remove the valve retainers, valve springs and valves

from the cylinder head. When removing each valve

retainer, depress the retainer against the valve spring and

remove the retainer lock. Identify each valve by putting a

mark indicating the number

the cylinder from which

the valve

removed.

~CAP

13. Remove the valve stem

seal.

'.\:,YJ

D-RING

HOSE~

NIPPLE-----/

ROCKER

COVER

GASKET

VALVE

SPRING

RETAINER

CYLINDER

HEAD

GASKET

1 2 ... 9 10 11 12 13 14 15 16 17 18 19 ... 58 59

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