Mitsubishi Heavy Industries S3L, Руководство по обслуживанию

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ELECTRICAL SYSTEM
12-14
2.4 Inspecting and repairing starter
2.4.1 Inspecting brushes for wear
Measure the length of the brushes. If the measured value is
less than the limit, replace both the brush holder assembly
and the brush assembly with new ones.
Inspecting brushes for wear
2.4.2 Measuring brush spring load
Using a new brush, measure the spring load at which the
spring lifts from the brush. If the measured value is less than
the limit, replace the spring with a new one.
Measuring brush spring load
2.4.3 Inspecting brush holder for insulation
Check that there is no continuity between each brush holder
and the brush holder base. If continuity is observed, replace
the whole brush holder assembly.
Check the brush holders for looseness.
Checking brush holder for grounding
Item Standard Limit
Brush length
M001T68281
16.5 mm
[0.650 in.]
10.0 mm
[0.394 in.]
M008T70471A
M008T81071A 17.5 mm
[0.689 in.]
11.0 mm
[0.433 in.]
Measure the
length of the
brush. Replace if
the length is equal
to or less than the
limit.
Item Standard Limit
Brush
spring load
M001T68281
17.5 to 23.7 N
{1.78 to 2.42 kgf}
[3.92 to 5.34 lbf]
6.86 N
{0.70 kgf}
[1.54 lbf]
M008T70471A
M008T81071A
26.7 to 36.1 N
{2.7 to 3.7 kgf}
[6.00 to 8.12 lbf]
14.7 N
{1.5 kgf}
[3.31 lbf]
Insulated brush holder
Brush holder base