Westerbeke 20B TWO Tehnical Manual

ENGINE DISASSEMBLY
This section describes the disassembly of the engine when performing a complete overhaul of the unit. The
procedures which follow include the disassembly of subassemblies, inspection of their components parts,
repair or replacement of these parts (if necessary), and the reassembly of the subassemblies.
Removal of External Parts and
Subassemblies
1. Remove the exhaust manifold and related hoses as a unit. Disassemble and inspect these parts.
2. Remove the heat exchanger and its related hoses and mounts from the front of the engine. Have the heat
exchanger cleaned and tested at a local automotive radiator repair shop or replace it if necessary.
3. Remove the starter motor and circuit breaker assembly. Examine the starter and have it repaired or
replaced if
necessary.
4. Remove the intake silencer, fuel lines, fuel pump and fuel filter with bracket assembly from its attachment
on the bell housing.
5. Remove the high pressure injector lines from between the injection pump and injectors. Note the location
of
each line.
6. Remove the transmission bell housing assembly.
7. Remove the raw water pump from its mounting point on the engine.
8. Remove the alternator, the fresh water pump's drive belt, and the alternator's mounting bracket.
9. Remove the fresh water circulating pump's pulley and remove the fresh water pump.
10. Remove the engine's backplate.
11 Remove the water temperature switch and the water temperature sender.
12. Remove the oil pressure switch, the oil pressure sender, and the oil filter.
13. Remove the thermostat housing and the thermostat.
14. Remove the crankshaft pulley from the crankshaft.
The basic engine assembly is now ready for disassembly, cleaning, inspection, and repair if necessary.
25 Westerbeke Engines

Westerbeke 20B TWO Specifications

General

Brand	Westerbeke
Model	20B TWO
Category	Engine
Language	English