Exploded View - Westerbeke 6.5 MCG Service Manual

STARTER MOTOR
TYPICAL STARTER
BENCH TESTING THE STARTER MOTOR
When bench testing the starter motor, make certain it is
securely held in place.
Motor Test
1. Using a fully charged battery, run a jumper from the bat-
teries (
+)
post to the connecting lead that has been
removed from terminal C ..
2. Connect another jumper from the battery(·) post to the
starter motor's housing (momentarily). If the motor fails
to run, the motor is the problem.
Magnetic Switch Test
1. Connect a jumper lead from the starter's S terminal to the
battery(+) post.
2. Connect a jumper from.the battery(-) post to the starter
motor's C temunal (momentarily).
3. If the pinion gear fails to pop out, the problem is with the
magnetic switch.
DISASSEMBLING THE MOTOR .
.
NOTE:
Closed type bearings are used on this series of
generators. During the dismantling, be careful not to damage
the protective cover rings.
BRUSH HOLDER ASSEMBLY
APPLY GREASE TO THE GEARS, BEARiNGS
BALL,
A~D
SLIDING SHAFT. USE DENSO 50
OR AN EQUIVALENT
To prevent damage to the rotor and stator windings while
removing the rotor, place cardboard between the packages
·and remove the rotor by pulling
it
out gentle.
DISASSEMBLING THE MAGNETIC SWITCH
1. Remove the drive end frame mounting screws.
2. Disassemble carefully the overrunning clutch, ball,
spring, gears, rollers, and retainer.
3. Remove the plunger end cover screws and take out the·
plunger.
NOTE:
When reasserflb.ling, apply grease to all the gear teeth,
the overrunning clutch and the ball.
TIGHTENING TORQUE B TERMINAL NUT 5.9 ·11.8 Nm
4.3. 8.7 ft·lb
BRUSH WEAR
1. If the contact face of the brush is dirty or dusty, clean it
with emery paper.
2. Measure the brush length (A) with vernier calipers.
3. If the length is less than the allowable limit, replace the
yoke assembly and brush holder.
BRUSH HOlDER
BRUSH LENGTH tA) 1B.OMM (0.
UDDIII1J.~rt¥/Y
LIMIT 11.DMM (0.4l311N)
Engines & Generators ·
49