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11. Remove alternator mounting bolt, using power tools.
12. Remove alternator bracket mounting bolt and alternator bracket.
13. Remove alternator to the direction of upper side the vehicle.
Installation
Note the following, and install in the reverse order of removal.
Install alternator, and check tension of belt. Refer to EM-128, "Checking Drive Belts" in “ENGINE
MECHANICAL (EM)” section.
CAUTION:
Be sure to tighten B terminal nut carefully.
PKIA2433E
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SC-32
CHARGING SYSTEM
QR20DE MODELS
Removal
1. Disconnect negative battery cable.
2. Remove drive belt. Refer to EM-14, "
Removal and Installation" .
3. Remove IPDM E/R bracket mounting bolts.
4. Slide IPDM E/R to the direction of arrow.
5. Disconnect alternator connector.
6. Remove B terminal nut.
7. Remove ground harness clip and ground harness bolt.
8. Remove alternator mounting bolts, using power tools.
9. Remove alternator to the direction of upper side the vehicle.
Installation
Note the following, and install in the reverse order of removal.
Install alternator, and check tension of belt. Refer to EM-14, "Checking Drive Belts" in “ENGINE
MECHANICAL (EM)” section.
CAUTION:
Be sure to tighten B terminal nut carefully.
1. Alternator bracket 2. Alternator mounting bolt (upper) 3. Alternator mounting bolt (lower)
4. Alternator 5. B terminal harness 6. B terminal nut
7. Alternator connector
PKIA2930J
PKIA4811E
PKIA4812E
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Disassembly and AssemblyBKS0027D
VQ23DE AND VQ35DE MODELS
PKIB9030E
1. Stator 2. Rear bearing 3. Rotor assembly
4. Retainer 5. Front bearing 6. Front cover
7. Pulley 8. Pulley nut 9. Fun guide
10. Double labyrinth seal 11. IC voltage regulator assembly 12. Diode assembly
13. Rear cover 14. Terminal set 15. Through-bolt
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CHARGING SYSTEM
QR20DE MODELS
DISASSEMBLY
Rear Cover
1. Remove through-bolt (4).
2. Remove rear cover.
NOTE:
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 soldering iron
until the temperature increases by about 30 °C.
CAUTION:
Never use a heat gun, as it can damage diode assembly.
PKIC8724E
1. Stator 2. Rear bearing 3. Rotor assembly
4. Retainer 5. Front bearing 6. Front cover
7. Pulley 8. Fun guide 9. Double labyrinth seal
10. IC voltage regulator assembly 11. Diode assembly 12. Rear cover
13. Terminal set 14. Through-bolt
SEL032Z
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Front Cover (For LR1110-713B)
1. Set rotor to the vise.
CAUTION:
Be careful not to damage the rotor.
Use copper plate or thick cloth for rotor in the vise.
2. Remove pulley cap, using suitable tool.
3. Remove alternator pulley, using alternator pulley adaptor [SST].
INSPECTION
Rotor Check
1. Resistance test
Not within the specified values... Replace rotor.
2. Insulator test
Continuity exists... Replace rotor.
3. Check slip ring for wear.
Not within the specified values... Replace rotor.
Brush Check
1. Check smooth movement of brush.
Not smooth... Check brush holder and clean.
2. Check brush for wear.
Replace brush if it is worn down to the limit line.
SKIB0531E
SKIB0731E
Resistance : Refer to SDS. SC-38,
"Alternator" .
Slip ring minimum
outer diameter: Refer to SDS. SC-38,
"Alternator" .SEL033Z
SEL631DA
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CHARGING SYSTEM
Pulley Check (With Clutch Type)
1. Check for locking (Outer ring is turned counterclockwise when
viewed from the rear).
If it rotates in both directions... Replace pulley.
2. Check for dragging (Outer ring is turned clockwise when viewed
from the rear).
If it locks or unusual resistance is felt... Replace pulley.
Stator Check
1. Continuity test
No continuity... Replace stator.
2. Ground test
Continuity exists... Replace stator.
ASSEMBLY
Ring Fitting In Rear Bearing
Fix ring into groove in rear bearing so that it is as close to the adja-
cent area as possible.
CAUTION:
Do not reuse rear bearing after removal.
PKIA0458E
SEL108E
SEL109E
SEL044Z
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Rear Cover Installation
1. Fit brush assembly, diode assembly, regulator assembly and
stator.
2. Push brushes up with fingers and install them to rotor.
Take care not to damage slip ring sliding surface.
SEL048Z
SEL049Z
Page 3256 of 3502

SC-38
SERVICE DATA AND SPECIFICATIONS (SDS)
SERVICE DATA AND SPECIFICATIONS (SDS)PFP:00030
BatteryBKS001MO
StarterBKS0027G
AlternatorBKS0027H
Applied modelStandard
Ty p e80D23L
Capacity12V -52AH
Applied model VQ23DE VQ35DE QR20DE
Ty p eM0T87181 M1T68681 S114 - 844
MITSUBISHI make HITACHI make
Reduction gear type
System voltage12 V
No-loadTerminal voltage 11 V
Current Less than 90 A
Revolution More than 2,800 rpm More than 2,750 rpm More than 2,700 rpm
Minimum diameter of commutator 28.8 mm (1.134 in) 28.0 mm (1.102 in)
Minimum length of brush 7.0 mm (0.276 in) 10.5 mm (0.413 in)
Brush spring tension18.3 - 24.8 N
(1.87 - 2.53 kg, 4.12 -
5.58 lb)15.0 - 20.4 N
(1.53 - 2.08 kg, 3.3 -
1.5 lb)16.2 N
(1.65 kg, 3.64 lb)
Clearance between bearing metal and armature shaft Less than 0.2 mm (0.008 in)
Clearance “L” between pinion front edge and pinion stopper0.5 - 2.0 mm (0.020 -
0.079 in)––
Movement “L” in height of pinion assembly –0.5 - 2.0 mm (0.020 -
0.079 in)0.3 - 2.5 mm (0.012 -
0.098 in)
Applied model VQ23DE, VQ35DE QR20DE
TypeLR1110 - 723E LR1110 - 713B
HITACHI make
Nominal rating12 V - 110 A
Ground polarityNegative
Minimum revolution under no-load (When 13.5 V is applied) Less than 1,100 rpm
Hot output current (When 13.5 V is applied)(More than 35 A/1,300 rpm)
More than 70 A/1,800 rpm
More than 91 A/2,500 rpm
More than 110 A/5,000 rpm
Regulated output voltage 14.1 - 14.7 V
Minimum length of brush More than 6.00 mm (0.236 in)
Brush spring pressure 1.00 - 3.43 N (102 - 350 g, 3.60 - 12.34 oz)
Slip ring minimum outer diameter More than 26.0 mm (1.024 in)
Rotor (Field coil) resistance 2.16 - 2.46 Ω