Westerbeke W-46 - Page 48

ENGINE ASSEMBLY
f. Connect oil pipe to connector securely. Then adjust the valve
clearance to 0.25mm (O.Olin.) for both intake and exhaust
valves in cold setting.
16. Adjust valve clearance as follows:
The valve clearance specification for this engine is 0.2Smm
(0.0098in.) for both intake and exhaust valves. This value assu-,
mes that the engine is at normal temperature, there being no tem-
perature difference throughout the body of the.· engine. The
checking and adjusting procedure is as follows:
a. Rotate the crankshaft slowly
to bring the piston in No. 1
cylinder to Top Dead Center
(TDC) • This can be
accomplished by observing
rocker arms of No.4
cylinder. As you turn the
crankshaft, the exhaust-
valve rocker arm of this
cylinder rises: stop turning
the crankshaft just when
intake-valve rocker arm
begins to go down after
exhaust-valve rocker arm has
come up all the way. Under this condition, adjust valve
clearance in the usual manner on the intake and exhaust valves
of No. 1 cylinder, intake valve of No. 2 cylinder, and exhaust
valve of No. 3 cylinder.
b. Turn the crankshaft one complete rotation (360") and hold it
there. Adjust the clearance on intake and exhaust valves o·f
No. 4 cylinder, exhaust valve of No. 2 cylinder, and intake
valve of No. 3 cylinder.
17. Install the rocker cover and
gasket.
18. Insfal).. the fresh water pump
assembly as follows:
a. Install water pump assembly.
b. Install the bypass hose bet-
ween the manifold and tee
below the thermostpt. _
NOTE: Early extruded I assembled manifolds only.
1....-IWES'TERBEKE
(Engines & Generators
46
Coolant by-pass hose