Checking The Generator - Yamaha XJR1300 2007 Service Manual

EAS5UXB004

CHECKING THE GENERATOR

1. Remove:
End cover
G
2. Measure:
Stator coil resistance
G
Out of specification → Replace the stator coil.
Stator coil resistance
0.19– 0.21 Ω at 20°C
MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM
a. Connect the pocket tester (Ω × 1) to the stator
coil terminals as shown.
Pocket tester
90890-03112
Analog pocket tester
YU-03112-C
Tester positive probe
White "1"
Negative tester probe
Black "2"
Tester positive probe
White "1"
Negative tester probe
Black "3"
1
2
3
b. Measure the stator coil resistances.
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3. Check:
Brush dimensions
G
Brush spring force
G
Over limit of use, off specification → Replace
the brush and brush spring.
Brush use limit
4.7mm (0.19 in)
Brush spring force
5.10–5.69 N (18.36–20.48 oz)
(520–580 gf)
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a. Remove the blush holder "1"
b. Check the brush length.
c. Check the blush spring force.
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4. Measure:
Field coil (rotor) resistance
G
Out of specification → Replace the rotor coil.
Field coil (rotor) resistance
2.75–3.04 Ω
MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM
a. Connect the pocket tester (Ω × 1) to the stator
coil terminals as shown.
Pocket tester
90890-03112
Analog pocket tester
YU-03112-C
Tester positive probe
Inside spring "1"
Negative tester probe
Outside spring "2"
5-31
GENERATOR
1