Infiniti EX35. Manual - part 422

CHG-28

< ON-VEHICLE REPAIR >

ALTERNATOR

DISASSEMBLY

Type: A3TJ1991

1.

“B” terminal nut

2.

“B” terminal harness

3.

Alternator connector

4.

Alternator mounting bolt

5.

Alternator stay mounting bolt

6.

Alternator stay

7.

Alternator

 : Engine front

Refer to 

GI-4, "Components"

 for symbols in the figure.

JSMIA0006GB

1.

Rear bearing

2.

Rotor assembly

3.

Retainer

4.

Front bearing

5.

Front bracket assembly

6.

Pulley

7.

Pulley nut

8.

Stator assembly

9.

IC voltage regulator assembly

JSMIA0007GB

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ALTERNATOR

CHG-29

< ON-VEHICLE REPAIR >

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AWD : Removal and Installation

INFOID:0000000003131900

REMOVAL

1.

Disconnect the battery cable from the negative terminal.

2.

Remove air cleaner case. Refer to 

EM-27, "Exploded View"

.

3.

Disconnect power steering oil pressure sensor connector (A).

4.

Remove the clip (B) from the harness bracket (1) and “B” termi-
nal harness from the clip (C).

5.

Remove engine undercover, using power tools. 

6.

Remove radiator cooling fan assembly. Refer to 

CO-13, "Exploded View"

.

7.

Remove drive belt. Refer to 

EM-13, "Removal and Installation"

. 

8.

Remove alternator mounting bolt (B) and alternator stay mount-
ing bolt (C) using power tools, then remove alternator stay (1).

9.

Remove alternator mounting bolt (A), using power tools.

10. Pull and turn alternator, and then remove the harness bracket

bolts (A).

11. Disconnect alternator connector (1).
12. Remove “B” terminal nut (2).

10. Diode assembly

11.

Rear bracket assembly

12. Terminal set

13. “B” terminal nut

Refer to 

GI-4, "Components"

 for symbols in the figure.

JSMIA0013ZZ

JSMIA0014ZZ

SKIB2608J

CHG-30

< ON-VEHICLE REPAIR >

ALTERNATOR

13. Remove power steering oil pump mounting bolts (1) and power

steering oil pump hose bracket bolts (2).

14. Move a power steering pump (1) and reservoir tank (2) forward.

15. Remove alternator assembly upward from the vehicle.

INSTALLATION

Install in the reverse order of removal.

CAUTION:

Be sure to tighten “B” terminal nut carefully.
• Install alternator, and check tension of belt. Refer to 

EM-13, "Checking"

.

• For this model, the power generation voltage variable control system that controls the power generation volt-

age of the alternator has been adopted. Therefore, the power generation voltage variable control system
operation inspection should be performed after replacing the alternator, and then make sure that the system
operates normally. Refer to 

CHG-23, "Inspection Procedure"

.

AWD : Inspection

INFOID:0000000003131901

ALTERNATOR PULLEY INSPECTION

Perform the following.
• Make sure that alternator pulley does not rattle.
• Make sure that alternator pulley nut is tight. Refer to 

CHG-27, "AWD : Exploded View"

.

JPMIA0840ZZ

: Vehicle front

JPMIA0839ZZ

CHG

SERVICE DATA AND SPECIFICATIONS (SDS)

CHG-31

< SERVICE DATA AND SPECIFICATIONS (SDS) 

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SERVICE DATA AND SPECIFICATIONS (SDS)

SERVICE DATA AND SPECIFICATIONS (SDS)

Alternator

INFOID:0000000003131902

*: Adjustment range of power generation voltage variable control is 11.4 - 15.6 V.

Type

A3TJ1991

MITSUBISHI make

Nominal rating

[V - A]

12 -150

Ground polarity

Negative

Minimum revolution under no-load (When 13.5 V is ap-
plied)

[rpm]

Less than 1,300

Hot output current (When 13.5 V is applied)

[A/rpm]

More than 31/1,300

More than 122/2,500
More than 144/5,000

Regulated output voltage

[V]

14.1 - 14.7

*

Minimum length of brush

[mm (in)]

More than 5.00 (0.197)

Brush spring pressure

[N (g, oz)]

4.1 - 5.3 (418 - 541, 14.7 - 19.1)

Slip ring minimum outer diameter

[mm (in)]

More than 22.1 (0.870)

Rotor (Field coil) resistance

[

Ω

]

1.7  -  2.0