1987 MITSUBISHI MONTERO Workshop Manual

CHARGING SYSTEM - Alternator 8-85
SERVICE POINTS OF INSTALLATION
6. INSTALLATION OF ALTERNATOR
(1) Position the alternator and insert the support bolt. (Do not
attach the nut.)
(2) Push the alternator forward and determine how many
spacers [thickness: 0.198 mm (.0078 in.)] should be
inserted between the front leg of the alternator and the
front case (space A in the illustration). (There should be
enough spacers so that they do not fall out when you let
go of them.)
(3) Insert the spacers (space A in the illustration), attach the
nut, and complete the installation.
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CHARGING SYSTEM-Alternator
10 11 14
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Disassembly steps
4* 1. Pulley
2. Seal
l a 3. Rotor assembly
4. Rear bearing
5. Bearing retainer
6. Front bearing
4*
7. Front bracket
8. Stator
9. Terminal
10. Plate
4* 11. Regulator and brush holder
12. Brush
13. Brush spring
14. Slinger
15. Rectifier assembly
4, 16. Rear bracket NOTE
(1) Reverse the disassembly procedures to reassemble.
(2) +e : Refer to “Service Points of Disassembly”.
(3) l
+ : Refer to “Service Points of Reassembly”.
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CHARGING SYSTEM-Alternator 8-87
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SERVICE POINTS OF DISASSEMBLY
7. REMOVAL OF FRONT BRACKET/lG. REAR BRACKET
(1) Insert plain screwdriver between front bracket and stator
core and pry downward.
Caution
Do not insert screwdriver too deep, as there is danger
of damage to stator coil.
(2) Rear cover may be hard to remove because a ring is used
to lock outer race of rear bearing. To facilitate removal of
rear cover, heat just bearing box section with a 200-W
soledering iron.
Do not use a heat gun, as it can damage diode assembly.
1. REMOVAL OF PULLEY
Clamp the rotor in a vise with soft jaws.
11. REMOVAL OF REGULATOR AND BRUSH HOLDER
(1) Unsolder three stator leads soldered to main diodes on
rectifier.
(2) Unsolder two plates soldered to rectifier.
Caution
1. When soldering or unsoldering, use care to make
sure that heat of soldering iron is not transmitted
to diodes for a long period. Finish soldering or un-
soldeing in as short a time as possible.
2. Use care that no undue force is exerted to leads of
diodes.
INSPECTION
ROTOR
l Check rotor coil for continuity. Check to ensure that there is
continuity between slip rings.
If resistance is extremely small, it means that there is a short.
If there is no continuity or if there is short circuit, replace rotor
assembly.
Standard value : 3.1 f2
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8-88 CHARGING SYSTEM-Alternator
6EL115
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l Check rotor coil for grounding. Check to ensure that there is no
continuity between slip ring and core. If there is continuity,
replace rotor assembly.
STATOR
l Make continuity test on stator coil. Check to ensure that there
is continuity between coil leads.
If there is no continuity, replace stator assembly.
l Check coil for grounding. Check to ensure that there is no
continuity between coil and core. If there is continuity, replace
stator assembly.
RECTIFIERS
l Positive rectifier test
Check for continuity between positive rectifier and stator coil
lead connection terminal with a circuit tester. If there is con-
tinuity in both directions, diode is shorted.
Replace rectifier assembly.
l Negative rectifier test
Check for continuity between negative rectifier and stator coil
lead connection terminal. If ther is continuity in both direction,
diode is shorted, and rectifier assembly must be replaced.
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CHARGING SYSPE 8-89
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l Diode trio test
Check three diodes for continuity by connecting a circuit tester
to both ends of each diode. If there is no continuity or no
continuity in both directions, diode is defective and heatsink
assembly must be replaced.
REPLACEMENT OF BRUSH
A brush worn away to the limit is replaced using the procedure
below.
(1) Remove the pigtail solder and take out the old brush and
spring.
(2) Install brush spring and new brush in brush holder.
(3) Insert the brush to where there is a space 2-3 mm
(.079-,118 in.) between the limit line and the end of the brush
holder.
(4) While maintaining the position of the step, solder the pigtails
to the end of the brush holder.
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8-90 CHARGING SYSTEM-Alternator
Rear bracket Wire
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SERVICE POINTS OF REASSEMBLY
3. REASSEMBLY OF ROTOR ASSEMBLY
Perform reassembly in reverse procedure of disassembly,
Before
rotor is attached to rear bracket, insert wire through
small hole made in rear bracket to lift brush. After rotor has
6een installed, remove the wire.
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STARTING SYSTEM-General Information 8-91
STARTING SYSTEM
GENERAL INFORMATION
NOBFAAJ
The electrical circuit of the starter system consists of battery, starter motor, solenoid switch, ignition switch,
inhibitor switch, connecting wire and battery cable.
In the starter system and electrical circuit, electricity flows to activate the coils of the starter motor solenoid when
the ignition switch is turned to the start position. In so doing, the solenoid plunger and clutch shift lever move, the
clutch pinion engages with the ring gear and then the solenoid contacts shut and the starter motor cranks.
As soon as the engine begins to run and, in order to prevent damage due to over-revolution by the armature starter,
the running clutch pinion gear over-rides, Thus in order not to cause damage to the starter motor once the engine
is running, the ignition switch must be immediately turned back to the ON position.
The starter motor is the reduction-drive type, and is compact and lightweight.
Inhibiter switch
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8-92 STARTING SYSTEM - General Information
“S” terminal
Sole;oid coil
“6” terminal -
clutch
Brush
gear type reduction
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