Acura NSX 1991 Manual page 753

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Starter Brush Holder Test
1. Check that there is no continuity between the
and brush holders.
If continuity exists, replace the brush holder
assembly.
BRUSH HOLDER
BRUSH HOLDER
2. Insert the brush into the brush holder, and bring the
brush into contact with the commutator, then at-
tach a spring scale to the spring. Measure the
spring tension at the moment the spring lifts off the
brush.
Spring Tension:
18.0-24.0 N (1.80-2.40 kg, 4.0-5.3 Ibs)
BRUSH
Table of Contents
BRUSH HOLDER
BRUSH HOLDER
SPRING SCALE
SPRING
Starter Brush Inspection
Measure the brush length. If not within the service limit,
replace the armature housing and
assembly.
Brush Length
Standard (New): 15.0-15.5 mm (0.591 -0.610 in)
Service Limit: 10.0 mm (0.394 in)
NOTE: To seat new brushes after installing them in
their holders, slip a strip of #500 or #600 sandpaper,
with the grit side up, over the commutator, and
smoothly rotate the armature. The contact surface of
the brushes will be sanded to the same contour as the
commutator.
brush holder
BRUSH