Infiniti M35/M45 Y50. Manual - part 1049

CHARGING SYSTEM

SC-31

C

D

E

F

G

H

I

J

L

M

A

B

SC

Removal and Installation 

NKS005C0

VQ35DE ENGINE MODELS

Removal (2WD Models)

1.

Disconnect the battery cable from the negative terminal.

2.

Remove engine front undercover, using power tools. 

3.

Remove alternator and power steering oil pump belt. Refer to 

EM-16, "DRIVE BELTS"

 .

4.

Disconnect alternator connector (1).

5.

Remove “B” terminal nut (2).

6.

Remove the harness bracket bolts (A).

7.

Remove oil pressure switch harness clip (A) from alternator stay.

8.

Disconnect oil pressure switch connector (1).

9.

Remove alternator mounting bolt (B) and alternator stay mount-
ing bolt (C) using power tools, then remove alternator stay (2).

10. Remove alternator mounting bolt (D), using power tools.

11. Remove alternator assembly downward from the vehicle.

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

: N·m (kg-m, ft-lb)

: Engine front

PKIB8815E

SKIB2605J

PKIB8817E

SC-32

CHARGING SYSTEM

Removal (AWD Models)

1.

Disconnect the battery cable from the negative terminal.

2.

Remove power steering oil reservoir tank from the bracket.

3.

Remove the clips (A) and the hose clamp (B) from the harness
bracket (1).

4.

Remove engine front undercover, using power tools. 

5.

Remove alternator and power steering oil pump belt. Refer to

EM-16, "DRIVE BELTS"

 .

6.

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

7.

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

8.

Pull and turn alternator, and then remove the harness bracket
bolts (A).

9.

Disconnect alternator connector (1).

10. Remove “B” terminal nut (2).
11. Remove alternator assembly downward from the vehicle.

Alternator Pulley Inspection

Perform the following.

●

Make sure that alternator pulley does not rattle.

●

Make sure that alternator pulley nut is tight.

Installation 

Installation is the reverse order of removal.

CAUTION:

Be sure to tighten “B” terminal nut carefully.

●

Install alternator, and check tension of belt. Refer to 

EM-16, "Checking Drive Belts"

 .

●

For this model, the power generation voltage variable control system that controls the power generation
voltage of the alternator has been adopted. Therefore, the power generation voltage variable control sys-
tem operation inspection should be performed after replacing the alternator, and then make sure that the
system operates normally. Refer to 

SC-29, "Power Generation Voltage Variable Control System Operation

Inspection"

 .

PKIB8818E

PKIB8819E

SKIB2608J

Alternator pulley nut:

: 118 N·m (12.0 kg-m, 87 ft-lb)

CHARGING SYSTEM

SC-33

C

D

E

F

G

H

I

J

L

M

A

B

SC

VK45DE ENGINE MODELS

Removal

1.

Disconnect the battery cable from the negative terminal.

2.

Remove engine front undercover, using power tools. 

3.

Remove “B” terminal nut (1).

4.

Disconnect alternator connector (2).

5.

Remove alternator ground harness mounting bolt (3).

6.

Remove the harness bracket bolts (A).

7.

Remove air intake duct. Refer to 

EM-177, "AIR CLEANER AND AIR DUCT"

 .

8.

Remove alternator, water pump and A/C compressor belt. Refer to 

EM-174, "DRIVE BELTS"

 .

9.

Remove power steering oil reservoir tank (1) from the bracket,
engine coolant reservoir tank (2) and vacuum tank (3).

10. Remove the harness clips (A).

11. Remove alternator mounting bolts (B), using power tools.
12. Remove alternator assembly upward.

1.

Alternator ground harness

2.

“B” terminal nut

3.

“B” terminal harness

4.

Alternator nut

5.

Alternator bracket

6.

Alternator

7.

Alternator mounting bolt

8.

Alternator stay

: N·m (kg-m, in-lb)

: N·m (kg-m, ft-lb)

: Engine front

PKIB8812E

PKIB8813E

PKIB8814E

SC-34

CHARGING SYSTEM

Alternator Pulley Inspection

Perform the following.

●

Make sure that alternator pulley does not rattle.

●

Make sure that alternator pulley nut is tight.

Installation 

Installation is the reverse order of removal.

CAUTION:

Be sure to tighten “B” terminal nut carefully.

●

Install alternator, and check tension of belt. Refer to 

EM-174, "Checking Drive Belts"

 .

●

For this model, the power generation voltage variable control system that controls the power generation
voltage of the alternator has been adopted. Therefore, the power generation voltage variable control sys-
tem operation inspection should be performed after replacing the alternator, and then make sure that the
system operates normally. Refer to 

SC-29, "Power Generation Voltage Variable Control System Operation

Inspection"

 .

Alternator pulley nut:

: 118 N·m (12.0 kg-m, 87 ft-lb)