Westerbeke BCGB - Page 51

STARTER MOTOR
Field Coil Inspection
1. Check for insulation between one end (brush) of the
coil and yoke.
2. Check for continuity between both ends (brushes)
of the coil
3. Check the poles and coil for tightness.
MULTIMETER
FIELD COIL TEST
STARTER ADJUSTMENT AND REASSEMBLY
A CAUTION: Before installing, thoroughly clean the
starter Bange and mounting surfaces, remove all oil,
'old paint, and rust. Starter perfonnance largely
depends on the quality of the wiring. Use wire of suffi·
cient size and grade between the battery and starter
and fully tighten to the tenninal.
Reassemble the starter assembly in the reverse order of
disassembly, making sure of the following:
1. Pinion shaft end play adjustment. Set the end play (thrust
gap) to between 0.5 to 2 mm by inserting an adjusting
washer between
the center bracket and the reduction gear.
a. Fit the pinion shaft, reduction gear washer and snap
ring to the center bracket.
b. Measure
end play by moving the pinion shaft in the
axial direction. If the end play exceeds 0.5 mm,
increase the number of adjusting washers inserted.
2.
Greasing. Whenever the starter has been overhauled,
apply grease to the following parts:
a. Armature shaft gear and reduction gear.
b. All bearings.
c. Bearing shaft washers and snap rings.
d. Bearing sleeves.
e. Pinion.
f., Sliding portion of lever.
A CAUTION: Never smear the starter fitting surface,
tenninals, brushes, or commutator with grease.
3. After reassembly, check by conducting a no-load test
again.
GEAR
SNAP RING
PINION SHAFT END PLAY
Engines & Generators
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