Starting
System
ELECTRIC STARTER
The electric starter contains three main assemblies:
an electric starting motor; a pinion gear and clutch
which engages with the ring gear on the engine fly-
wheel during starting; and a solenoid-switch as-
sembly which shifts the pinion gear into the engine
ring gear and activates the starting motor.
The starter will seldom require service other than
possible brush replacement. Before attempting star-
ter repair, make sure the electrical system leading to
the start solenoid
is
not the source of the problem. If
thestarter bindsorslipsduring cranking, or isexces-
sively noisy, the gear lash between the starterand the
flywheel ring gear may be incorrect. Information on
setting the gear lash is provided at the end of this
section.
FIGURE
36.
STARTER ASSEMBLIES
STARTER DISASSEMBLY
AND
REPAIR
Starter disassembly and inspection procedures are
provided below. Common sources of starter malfunc-
tion include worn commutator brushes, worn arma-
ture bearings, a stripped pinion gear, or a faulty
solenoid-switch.
Removal
1.
Disconnect the positive battery cable from the
2.
Remove the blower housing from the front of the
3.
Holding the starter in place, remove the starter
starter solenoid-switch.
engine.
mounting bolts, then remove the starter.
Disassembly
Some differences in configuration exist between the
starter used during Spec Aand the starterthat has been
used from Spec
B
to the present (Figure
36).
However,
disassembly procedures for either are basically the
same. Using Figure
37
as a guide, proceed as follows:
I.
Remove the field coil strap where
it
connects to
the solenoid-switch.
2.
Detach the mounting screws, and remove the
solenoid-switch from the starter motor.
3.
Remove the starter thru-bolts. Separate the front
bracket from the starter housing. The solenoid
shift lever and spring components will come
loose as the front bracket is removed. The arma-
ture may also be removed from the starter hous-
ing at this time.
4.
Remove the brush holder retaining screws from
the back of the rear bracket. Separate the rear
bracket from the starter housing and the
brush
holder.
5.
To
remove the pinion gear and clutch from the
armature shaft, drive the pinion stopper away from
the retaining ring
it
holds in place (Figure
38).
Remove the retaining ring and slide the pinion
stopper, pinion gear and clutch
off
of
the armature
shaft
L
Inspection
of
Parts
Pinion
Gear
and
C/ufch:
The pinion gear should
rotate smoothly (not necessarily easily) in one direc-
tion and not at all in the opposite direction. If the gear
isworn or burred, or does not rotate properly, replace
the gear and clutch assembly. Also check the teeth on
theflywheel ring gearfor signs of excessive wearand
replace if necessary.
34
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