Starting System: Other Suzuki SX4 I рестайлинг

Cranking Circuit

The cranking circuit consists of the battery, starting motor, ignition switch, starting motor control relay, clutch switch (M/T model), shift switch in transmission range sensor (CVT model) and related electrical wiring.

Starting Motor Circuit

In the circuit shown in CRANKING SYSTEM CIRCUIT DIAGRAM , the coil of the magnetic switch in starting motor is energized when the ignition switch is closed. The resulting movement of the plunger and pinion drive lever movement causes the pinion to engage the engine flywheel gear and the contact of the magnetic switch close, and cranking takes place.

When the engine starts, the pinion over-running clutch protects the armature from excessive speed until the switch is opened, at which time the return spring causes the pinion to disengage.

Scheme 32

Plunger

Check plunger for wear. Replace magnetic switch if necessary.

Scheme 33

Magnetic Switch

Push in plunger and release it. Plunger should return quickly to its original position. Replace magnetic switch if necessary.

Scheme 34

End Frame Bush

Check end frame bush for wear or damage. Replace bush if necessary.

Scheme 35

Scheme 36

1. Check brushes for wear. Measure length of each brush and if measurement is below the limit, replace brush assembly. Brush length Standard: 12.3 mm (0.484 in.) Limit: 5.5 mm (0.22 in.)
2. Install brushes to their holders and check them for smooth movement.

Spring

Check brush springs for wear, damage or other abnormal conditions. Replace brush assembly if necessary.

Brush spring tension

Standard: 15 - 20 N (1.5 kgf - 2.0 kgf, 3.4 - 4.5 lbf)

Limit: 2.8 N (0.29 kgf, 0.63 lbf)

Scheme 37

1. Check movement of each brush in holder. If brush movement within brush holder is sluggish, check brush holder for distortion and sliding surfaces for contamination. Clean or correct brush holder as necessary.
2. Check for continuity across insulated brush (positive (+) side) and grounded brush (negative (-) side). If continuity exists, brush holder is grounded due to defective insulation and should be replaced.

Scheme 38

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Scheme 43

1. Check commutator for dirt or burn. Correct commutator with sandpaper or lathe, if necessary.
2. Check commutator for uneven wear with armature (1) supported on V-blocks (2). If dial gauge (4) deflects exceeding the limit, repair commutator or replace armature. Commutator out of round Standard: 0.05 mm (0.002 in.) or less Limit: 0.4 mm (0.02 in.)
3. Check commutator for wear. If diameter is below limit, replace armature. Commutator outside diameter Standard: 29.4 mm (1.16 in.) Limit: 28.8 mm (1.14 in.)
4. Check commutator (1) for insulator (2) depth. Correct insulator depth or replace commutator if measurement is below limit. Commutator insulator depth "a" Standard: 0.5 mm (0.020 in) Limit: 0.2 mm (0.008 in.)
5. Check insulation between commutator and armature core. If there is continuity, armature is grounded and must be replaced.
6. Check for continuity between segments. If there is no continuity at any test point, there is an open circuit and armature must be replaced.

Gears

Check internal gear and planetary gears for wear, damage or other abnormal conditions. Replace gear set if necessary.

Scheme 44

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Scheme 46

1. Check pinion for wear, damage or other abnormal conditions.
2. Check that clutch locks up when turned in direction of drive and rotates smoothly in reverse direction. Replace pinion and overrunning clutch if necessary.
3. Check spline teeth for wear or damage. Replace pinion and overrunning clutch if necessary.
4. Check pinion for smooth movement.

Starter Housing Bush

Check bush for wear or damage. Replace bush if necessary.

Scheme 47

Recommended Service Material

RECOMMENDED SERVICE MATERIAL REFERENCE CHART

Note. Required service material is also described in the following. STARTING MOTOR COMPONENTS