Front Case/Counterbalance Shaft And Oil Pump - Westerbeke BCGB Service Manual

FRONT CASE I COUNTERBALANCE SHAFT AND OIL PUMP
INSTALLATION
Counterbalance Rear Bearing
1. Install the special tool guide pins (bearing Installer) in the
tapered hole of the cylinder block as shown .
. \ t)r---, (
OIL HOLE
~ ~
J
0..
r
\ ' - "::J
~\
BEARING
2. Mate the ratchet ball of the bearing in the oil hole of the
rear bearing and install the bearing in the bearing
installer.
3. Apply clean engine oil to the outer circumference of the
bearing and the bearing hole in the cylinder block.
4.
GUIDE PIN -
__ .v
\
Counterbalance Front Bearing
1. Apply engine oil to the bearing outer circumference and
the bearing hole in the cylinder block.
2. Press-in the front bearing using the installer tool.
FRONT BEARING
INSTALLATION
Crankshaft Oil Seal
1.
Front Case Assembly
Install the front case assembly through the gasket and tighten
the bolts to the specified torque.
FRONT CASE BOLTS TORQUE 6 - 7ft.Jbs. (8 -10 Nm)
There are two different length front case bolts. Make certain
they are positioned properly. See the diagram.
NOTE:
When installing the front case assembly, apply oil to
the inner circumference of the oil seal lip. When installing
the front case assembly take care not to damage the oil
seal lip on the stepped up portion of the front end of
the crankshaft.
A
A_-.r.-
B
B
Oil Pump Driven Gear
A BOLT • 18mm (.71 in)
B BOLT· 30mm (1.18 in)
B
1.
Apply an ample amount of clean engine oil to the oil
pump driven gear and insert it so that the timing mark is
positioned as shown.
2. Using the same hole on the side of the cylinder block,
reinsert the 8mm rod to lock the counterbalance shaft.
Then tighten the flange bolt to the specified torque.
DRIVEN GEAR FLANGE BOLT TORQUE
SETTING THE
DRIVEN GEAR
TIMING
MARK
25 - 29ft.lbs. (34· 40Nm)
Engines & Generators
28