Isuzu N-Series. Service manual — part 404
6D2-2 STARTING SYSTEM
GENERAL DESCRIPTION
Component
Starting Circuit
The cranking system consists of a battery, starter, starter switch, starter relay, etc. and these main components are
connected as shown in figure. For details of the starting circuit.
Starter
The starting system employs a magnetic type reduction
starter in which the motor shaft is also used as a pinion
shaft. When the starter switch is turned on, the contacts
of magnetic switch are closed, and the armature rotates.
At the same time, the plunger is attracted, and the pinion
is pushed forward by the shift lever to mesh with ring
gear.
Then, the ring gear runs to start the engine. When the
engine starts and the starter switch is turned off, the
plunger returns, the pinion is disengaged from ring gear,
and the armature stops rotation. When the engine speed
is higher than the pinion, the pinion idles, so that the ar-
mature is not driven.
Legend
1. Ring gear
6. “B” terminal
2. Pinion clutch
7. Starter
3. Shift lever
8. Relay; starter
4. Magnetic switch
9. Starter switch
5. “S” terminal
10. Battery
N6A1660E
STARTING SYSTEM 6D2-3
Starting Circuit
N6A1661E
6D2-4 STARTING SYSTEM
Starting Motor
Legend
1. Magnetic switch
7. Rear cover
2. Gear case
8. Armature
3. Torsion spring
9. Yoke
4. Clutch
10. Brush
5. Pinion
11. Through bolt
6. Dust cover
N6A0987E
STARTING SYSTEM 6D2-5
ON-VEHICLE SERVICE
Component
Starter
Removal
Preparation
• Disconnect the battery ground cable (both batter-
ies).
1. Starter Earth Cable
• Disconnect the starter earth cable at the starter
motor.
Legend
1. Starter earth cable
3. Starter wiring connector
2. Starter assembly
N6A0988E
N6A0989E
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