Service Manual

ARMATURE SHAFT
PINION SIDE OF
ES-1877
FIGURE 10-8. MEASURING ARMATURE
SHAFT OUTSIDE DIAMETER
Commutator And Mica
Commutator: Refer to Figure 10-9. Clean commu-
tator surface with sandpaper. Measure the commu-
tator outside diameter at several points.
If the differ-
ence of the outside diameter is not as specified in
Dimensionsand Clearances, correct the commuta-
tor on a lathe to
factory specifications. If the mini-
mum outside diameter is less than the allowable
limit, replace the armature.
ES-1878
FIGURE 10-9. MEASURING COMMUTATOR
OUTSIDE
DIAMETER
Mica: Refer to Figure 10-10. Measure the mica un-
dercut depth.
If the undercut is less than that speci-
fied in
Dimensions and Clearances, use a saw
blade to increase the depth and then chamfer the
segment edges.
SEGMENT MICA
EDGES UNDERCUT
DEPTH
SAW BLADE
ES-1879
FIGURE 10-10. MICA UNDERCUT DEPTH
Starter Body
Inspection: Refer to Figure 10-11. Check for conti-
nuity across the starter body and brushes. There
are four brushes in the starter body. The
two that are
not grounded are
180" apart starting at the terminal
which connects to the solenoid. The
two that are
grounded are located
90" from the non-grounded
terminals.
If continuity exists at the non-grounded
terminals, replace the starter
body. If continuity
does not exist at the grounded terminals, replace
the starter
body.
NON-GROUNDED
TERMINAL
'
ES-1880
FIGURE 10-11. CHECKING FOR STARTER
BODY CONTINUITY