Westerbeke 20B TWO Tehnical Manual

Cylinder Head Removal
1. Remove the high pressure injection line assembly.
CAUTION
When disconnecting each injection line from the injection pump side delivery valve holder,
grasp the holder with a wrench to prevent it from loosening. After removing the pipe assembly,
plug the nozzle holders and delivery valve holders to prevent intrusion of dust.
2. Disconnect the glow plug lead wire.
3. Disconnect the air breather hose.
4. Remove the rocker cover.
5. Remove the rocker shaft assembly.
6. Loosen the cylinder head mounting bolts in the
numerical order as illustrated and remove the
cylinder head assembly (including the intake and
exhaust manifold). Sequence for Loosening Cylinder Head Bolts
7. Remove the cylinder head gasket. Clean the
cylinder head and the cylinder block surface from
which the gasket
has been removed.
8. Remove the injector assemblies and glow plugs
from the cylinder head.
9. Remove the intake manifold from the cylinder head.
10. Remove the valve retainers, valve springs and
valves from the cylinder head.
Sequence for Loosening Cylinder Head Bolts
CAUTION
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 of the cylinder
from which the valve is removed.
11. Remove the valve stem seals.
·.·20B'
27
Westerbeke Engines

Westerbeke 20B TWO Specifications

General

Brand	Westerbeke
Model	20B TWO
Category	Engine
Language	English