23B ELECTRICAL EQUIPMENT
General description
The Lucas M127 starter motor is operated by a
solenoid and has a five roller clutch. The solenoid
engages the starter drive in two operations to
ensure that the motor gets its maximum torque only
when the starter motor is engaged fully with the
flywheel. The clutch prevents rotation of the
armature at high speed if the starter is held in the
engaged position.
The CAV CA45 or S115 starter motor has a smooth
surface with no protrusions. This is because the
solenoid and the main switch assemblies are inside
the drive end cover around (co-axially with) the
armature shaft. The main feature of the co-axial
starter is that only the pinion assembly moves
axially to engage the engine flywheel. There is no
axial movement of the whole armature as with the
axial type motor. To ensure smooth engagement of
the pinion, full load is not applied until the pinion is
completely engaged with the flywheel.
23B.02 Perkins Phaser/1000 Series, April1995
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