service manual 44240 8.0, 10.0, 12.5 and 15.0 - Westerbeke

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SUP b,U',."'"
TEsnNG THE ROTOR
ASSEMBLE ALTERNATOR
MANDO ALTERNATOR SERVICE
FINGERS
1. Carefully press the front bearing into the front housing,
pushing against the bearing's outer race using a bearing
driver. Lock the bearing in place with screws.
TORQUE: 25 - 351b-in (2.B - 4.0 Nm)
OUTER
IIACf
FRONT BEARING ASSEMBLY
ASSEMBLING THE BEARINGS
HOUSING
BEARING LOCKING
SCREWS
FRONT BEARING
2. Place the rotor (pulley end up) on the bed of an arbor
press, on two steel blocks.
3. Press the front housing and bearing assembly down
onto the rotor shaft. Press against the bearing's inner
race only, using a sleeve driver. Take care to insure that
the rotor leads clear the steel blocks.
SLEEVE DRIVER
ROTOR
FRONT HOUSING AND
BEARING ASSEMBLY
INSTALLING THE FRONT HOUSING ON THE ROTOR ASSEMBLY
4. Install the rectifier assembly into the rear housing.
5. Insert the Phillips screw and tighten it.
RECTIFIER
ASSEMBLY
6. Assemble the front and rear housings as follows:
Engines & Generators
48
a. Put the stator winding in the front housing with the
stator leads away from the front housing and the
notches in the stator laminations aligned with the
four through-bolt holes in the housing.
b. Align the scribe marks you made in the stator, and
front and rear housings during disassembly.
c. Slip the rear housing into place over the rotor shaft.
Align the mounting holes and put the stator leads
through the holes at the top of the rear housing.
d. Install the four bolts and tighten them.
TORQUE: 35 - 65/b-tt (4.0 - 7.3 Nm)
NOTE: If the front housing is new, the through-bolt
will not be tapped.