Hyundai HDF 50-7S, Руководство по обслуживанию

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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.
Place the armature on the growler. Hold a piece of iron
plate and make it contact with the armature coil as
shown in the illustration. In this condition, rotate the
armature slowly by hand. If the short circuit exists on
the coil, the iron plate is attracted to the coil. If coil is
not defective, the iron plate is not attracted.
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
ø32 mm
[1.26 in.]
31.4 mm
[1.236 in.]
Outside
diameter
Item Standard Limit
Undercut depth
0.4 to 0.6 mm
[0.016 to 0.024 in.]
0.2 mm
[0.008 in.]
Segment
Undercut
Mica
Growler
tester
Iron plate
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