Service Manual

10. Install and tighten the two through capscrews.
11. Install solenoid plunger in lever. Secure solenoid
to
front bracket with two machine screws.
12. Install wire lead
to the terminal “M” on solenoid.
13. After assembly, adjust pinion clearance. Pinion
clearance should be 0.02 to
0.08 inch (0.5 to 2.0 mm);
if not, check as follows (Figure 4):
A. Connect starter to a battery. Close switch. This
will shift pinion into cranking position.
B. Push pinion back by hand and measure pinion
clearance.
If clearance does not fall within the
specified limits, adjust by adding or removing
shims located between solenoid and front
bracket. Adding shims decreases clearance;
removing shims increases clearance. Shims are
included with replacement solenoid.
COMMUTATOR
BARS
FIGURE 5. TESTING ARMATURE FOR GROUNDS
PINION
SWITCH FRONT
BATTERY
12V
PINION CLEARANCE
ES-1623
FIGURE .4. PINION CLEARANCE ADJUSTMENT
Inspection and Testing
Inspect the starter components for mechanical defects
before testing
for grounds or shorts.
Testing Armature for Grounds: Touch armature shaft or
core and the end of each commutator bar with a pair
Of
ohmmeter leads (Figure 5). A low ohmmeter reading
indicates a grounded armature. Replace grounded
armature.
Testing Armature for an Open Circuit: Using an
ohmmeter, check for continuity between the commutator
segments.
If there is no continuity (high resistance), the
segments are open and armature must be replaced.
Testing Armature for a Short Circuit: Use a growler for
locating shorts in the armature (Figure
6). Place armature
in growler and hold a thin steel blade (e.g. hacksaw
blade) parallel to the core and just above it while slowly
rotating armature in growler.
A shorted armature will
cause the blade
to vibrate and be attracted to the core. If
armature is shorted, replace with a new one.
BLADE
GROWLER
ES-1002
FIGURE 6. TESTING ARMATURE FOR SHORT CIRCUITS
9-3