ELECTRICAL SYSTEM
12-13
2.3.5
Measuring commutator outside diameter
Measure the commutator outside diameter.
If the measured value is less than the limit, replace the
armature with a new one.
Measuring commutator outside diameter
2.3.6
Measuring undercut depth
Measure the depth of undercutting between the commutator
segments.
If the measured value is less than the limit, repair or replace
with a new part.
Measuring commutator undercut depth
2.3.7
Checking armature coil
(1)
Inspect the armature coil using a growler.
Hold a piece of iron plate against the armature core. If
the iron plate vibrates, replace the armature with a new
one.
Inspecting armature coil for short circuit
(2)
Check that there is no continuity between the
commutator and the shaft (core).
If any continuity is observed, replace the armature with
a new one.
Inspecting insulation between commutator and shaft
Item
Nominal
Limit
Commutator outside diameter
32 mm
[1.26 in.]
31.4 mm
[1.236 in.]
Outside
diameter
Item
Standard
Limit
Undercut depth
0.4 to 0.6
[0.016 to 0.024 in.]
0.2 mm
[0.008 in.]
Segment
Undercut
Mica
Growler tester
Iron plate
Summary of Contents for S4S
Page 2: ......
Page 4: ......
Page 16: ......
Page 36: ......
Page 48: ......
Page 49: ...3 1 SERVICE TOOLS 1 Special tool 3 2 ...
Page 56: ......
Page 102: ......
Page 122: ......
Page 146: ......
Page 154: ...LUBRICATION SYSTEM 9 8 2 3 Reassembling oil pump Reassembling oil pump Flush Flush ...
Page 159: ...LUBRICATION SYSTEM 9 13 3 2 Installing oil cooler Installing oil cooler Replace Replace ...
Page 208: ...ELECTRICAL SYSTEM 12 30 3 2 Installing alternator 12V 50A Installing alternator 12V 50A ...
Page 220: ......