Mazda CX 7. Manual — part 138
STARTING SYSTEM [L3 WITH TC]
01-19–5
01-19
2. Verify that there is no continuity between the
commutator and the shaft using a tester.
• If there is continuity, replace the armature.
3. Place the armature on V-blocks, and measure the
runout using a dial indicator.
Starter armature runout
0.05 mm {0.002 in} max.
4. Measure the commutator diameter.
• If not within the minimum specification,
replace the armature.
Starter commutator diameter
Standard: 29.4 mm {1.16 in}
Minimum: 28.8 mm {1.13 in}
5. Measure the segment groove depth of the
commutator.
• If not within the minimum specification,
undercut the grooves to the standard depth.
Segment groove depth of starter commutator
Standard: 0.4— 0.6 mm {0.016— 0.023 in}
Minimum: 0.2 mm {0.008 in}
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1871-1U-06B(01-19).fm 5 ページ 2006年3月15日 水曜日 午前10時51分
STARTING SYSTEM [L3 WITH TC]
01-19–6
Magnetic switch
1. Inspect for continuity between terminals S and M
using a tester.
• If there is no continuity, replace the magnetic
switch.
2. Inspect for continuity between terminal S and the
body using a tester.
• If there is no continuity, replace the magnetic
switch.
3. Verify that there is no continuity between
terminals M and B using a tester.
• If there is continuity, replace the magnetic
switch.
Brush and brush holder
1. Verify that there is no continuity between each
insulated brush and plate using a tester.
• If there is continuity, replace the brush holder.
TERMINAL S
TERMINAL M
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TERMINAL S
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TERMINAL M
TERMINAL B
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1871-1U-06B(01-19).fm 6 ページ 2006年3月15日 水曜日 午前10時51分
STARTING SYSTEM [L3 WITH TC]
01-19–7
01-19
2. Measure the brush length.
• If any brush is worn almost to or beyond the
minimum specification, replace all of the
brushes.
Starter brush length
Standard: 12.3 mm {0.48 in}
Minimum: 7.0 mm {0.28 in}
3. Measure the brush spring force using a spring
balance.
• If not within the minimum specification,
replace the brush and brush holder
component.
Starter brush spring force
Standard: 18.3— 24.9 N {1.87— 2.53 kgf,
4.12— 5.59 lbf}
Minimum: 5.9 N {0.6 kgf, 1.3 lbf}
End Of Sie
STARTER DISASSEMBLY/ASSEMBLY[L3 WITH TC]
id011939800400
1. Disassemble in the order indicated in the table.
2. Assemble in the reverse order of disassembly.
.
MINIMUM
BRUSH
LENGTH
CONTACT FACE WITH COMMUTATOR
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N·m {kgf·cm, in·lbf}
2.4—4.4
{25—44,
22—38}
4.4—7.1
{45—72,
40—62}
9.8—11.8
{100—120,
87—104}
4.1—7.6
{42—77,
37—66}
7
5
4
3
1
2
8
11
9
10
6
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1
Magnetic switch
2
Rear housing
3
Brush and brush holder
4
Armature
5
Yoke
6
Planetary gear
7
Front cover
8
Lever
9
Drive pinion
10
Internal gear
11
Gear shaft
1871-1U-06B(01-19).fm 7 ページ 2006年3月15日 水曜日 午前10時51分
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