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Service Manual Mitsubishi SL-Series diesel engines
Version 08/2004
ENGLISH
STARTER ELECTRICAL SYSTEM
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2. Coil Gound Test
Check whether continuity exists between the yoke
and each brush. If continuity exists, the coil is
grounded and must be checked for defective
insulation. If repair is impossible, replace the yoke
assembly.
29.2.3 Brushes and Brush Holders
1. Brush Wear
Measure the length of the brush. If the
measurement is smaller than the limit, replace the
brush. If the brush is worn unevenly or has a rough
contact surface, rectify the problem with fine emery
paper (#300–500).
Unit: mm (in.)
2. Brush Spring Force
With a new brush installed, pull the brush spring
with a spring balance and read the load at the point
where the spring leaves the brush. Replace the
spring if its force is lower than the limit.
N {kgf} (lbf)
3. Brush Holder Insulation Test
Check whether continuity exists between the (+)
brush holder and the (–) brush holder plate. If
continuity exists, replace the brush holder
assembly.
Brush
Standard value Limit
Brush length 18 (0.71) 11 (0.43)
Standard value Limit
Brush spring
force
26.7 – 36.1
{2.7 – 3.7}
(6.0 – 8.3)
14.7
{1.5}
(3.3)