Infiniti EX37. Transaxle and Transmission (2013 year). Manual - part 18

TRANSMISSION ASSEMBLY

TM-273

< UNIT DISASSEMBLY AND ASSEMBLY >

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74. Pour ATF into torque converter.

• Approximately 2 liter (2-1/8 US qt, 1-3/4 Imp qt) of ATF is

required for a new torque converter.

• When reusing old torque converter, add the same amount

of ATF as was drained.

75. Install torque converter while aligning notches of torque con-

verter with notches of oil pump.

CAUTION:

Install torque converter while rotating it.

76. Measure dimension (A) to make sure that torque converter is in

proper position.

Inspection

INFOID:0000000008285938

INSPECTION AFTER DISASSEMBLY

Oil Pan

Check foreign materials in oil pan to help determine causes of mal-
function. If the ATF is very dark, smells burned, or contains foreign
particles, the frictional material (clutches, band) may need replace-
ment. A tacky film that will not wipe clean indicates varnish build up.
Varnish can cause valves, servo, and clutches to stick and can
inhibit pump pressure.
• If frictional material is detected, replace radiator after repair of

A/T. Refer to 

CO-13, "Removal and Installation"

.

Torque Converter

SAT428DA

SCIA5010E

B

:  Scale

C

: Straightedge

Dimension (A)

: Refer to 

TM-303, "Torque Converter"

.

JPDIA0042ZZ

SCIA5199E

2013 EX

TM-274

< UNIT DISASSEMBLY AND ASSEMBLY >

[7AT: RE7R01A]

TRANSMISSION ASSEMBLY

Check torque converter one-way clutch using a check tool as shown
at figure.
1.

Insert a check tool into the groove of bearing support built into
one-way clutch outer race.

2.

When fixing bearing support with a check tool, rotate one-way
clutch spline using a screwdriver.

3.

Make sure that inner race rotates clockwise only. If not, replace
torque converter assembly.

1st One-way Clutch

Check operation of 1st one-way clutch.

1.

Install 1st one-way clutch (1) to front brake hub (with under drive
carrier).

2.

Hold 1st one-way clutch.

3.

Check front brake hub for correct locking and unlocking direc-
tions. If necessary, replace 1st one-way clutch.

Under Drive Sun Gear

Check for deformation, fatigue or damage. If necessary, replace the under drive sun gear.

Mid Carrier Assembly

Check for deformation, fatigue or damage. If necessary, replace the mid carrier assembly.

Rear Carrier Assembly

Check for deformation, fatigue or damage. If necessary, replace the rear carrier assembly.

Reverse Brake Retaining Plate/Drive Plates/Driven Plates/Dish Plates

Check facing for burns, cracks or damage. If necessary, replace the damaged plate.

Front Brake Retaining Plates/Drive Plates/Driven Plate

Check facing for burns, cracks or damage. If necessary, replace the damaged plate.

Each Snap Ring

Check for deformation, fatigue or damage. If necessary, replace the snap ring.

Parking Actuator Support and Parking Pawl

SCIA3171E

: Unlocked

: Locked

JSDIA1713ZZ

2013 EX

TRANSMISSION ASSEMBLY

TM-275

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If the contact surface on parking actuator support (1) and parking
pawl (2) has excessive wear, abrasion, bend or any other damage,
replace the components.

JPDIA0034ZZ

2013 EX

TM-276

< UNIT DISASSEMBLY AND ASSEMBLY >

[7AT: RE7R01A]

OIL PUMP, 2346 BRAKE, FRONT BRAKE PISTON

OIL PUMP, 2346 BRAKE, FRONT BRAKE PISTON

Exploded View

INFOID:0000000008285939

Disassembly

INFOID:0000000008285940

1.

Remove snap ring (1) from oil pump assembly using a flat-
bladed screwdriver (A).

CAUTION:

• Be careful not to scratch oil pump cover and 2346 brake

retaining plate.

• Be careful not to damage snap ring.

1.

Oil pump housing oil seal

2.

Oil pump housing

3.

O-ring

4.

Oil pump cover

5.

O-ring

6.

D-ring

7.

D-ring

8.

Front brake piston

9.

Front brake spring retainer

10. Snap ring

11.

D-ring

12. D-ring

13. 2346 brake piston

14. 2346 brake spring retainer

15. Snap ring

16. Seal ring

17. 2346 brake dish plate

18. 2346 brake driven plate

19. 2346 brake drive plate

20. 2346 brake retaining plate

21. Snap ring

: Apply Genuine RTV silicone sealant or equivalent. Refer to 

GI-22, "Recommended Chemical Products and Sealants"

.

Refer to 

GI-4, "Components"

 for symbols not described on the above.

JPDIA1089GB

JPDIA1090ZZ

2013 EX

OIL PUMP, 2346 BRAKE, FRONT BRAKE PISTON

TM-277

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2.

Remove 2346 brake component part (retaining plate, drive
plate, driven plate and dish plate) (1) from oil pump assembly.

3.

Remove seal ring (1) from oil pump assembly.

4.

Set the clutch spring compressor [SST: KV31103800 (

—

)]

(A) on front brake spring retainer and remove snap ring (fixing
front brake spring retainer) (1) from oil pump assembly while
compressing return spring.

CAUTION:

Be careful not to expand snap ring excessively.

5.

Remove front brake spring retainer (1) from oil pump assembly.

6.

Set the clutch spring compressor [SST: KV31102400 (J-34285
and J-34285-87)] (A) on 2346 brake spring retainer and remove
snap ring (fixing 2346 brake spring retainer) (1) from oil pump
assembly while compressing return spring.

CAUTION:

Be careful not to expand snap ring excessively.

JPDIA1091ZZ

JPDIA1092ZZ

JSDIA1729ZZ

JPDIA1094ZZ

B

:  Press

JSDIA1730ZZ

2013 EX

TM-278

< UNIT DISASSEMBLY AND ASSEMBLY >

[7AT: RE7R01A]

OIL PUMP, 2346 BRAKE, FRONT BRAKE PISTON

7.

Remove 2346 brake spring retainer (1) from oil pump assembly.

8.

Remove front brake piston (1) from oil pump assembly with
compressed air. Refer to 

TM-228, "Oil Channel"

.

CAUTION:

Care should be taken not to abruptly blow air. It makes pis-
ton incline, as the result, it becomes hard to disassemble
the piston.

9.

Remove D-ring (inner) (1) and D-ring (outer) (2) from front brake
piston.

JPDIA1096ZZ

A

: Front brake pressure hole

JPDIA1097ZZ

JPDIA1098ZZ

2013 EX

OIL PUMP, 2346 BRAKE, FRONT BRAKE PISTON

TM-279

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10. Remove 2346 brake piston (1) from oil pump assembly with

compressed air. Refer to 

TM-228, "Oil Channel"

.

CAUTION:

Care should be taken not to abruptly blow air. It makes pis-
ton incline, as the result, it becomes hard to disassemble
the piston.

11. Remove D-ring (large) (1) and D-ring (small) (2) from 2346

brake piston.

12. loosen bolts (

) in numerical order shown in the figure and

remove oil pump housing from oil pump cover.

13. Remove oil pump housing oil seal using a flat-bladed screw-

driver.

CAUTION:

Be careful not to scratch oil pump housing.

A

: 2346 brake pressure hole

JPDIA1099ZZ

JPDIA1100ZZ

JPDIA1101ZZ

SCIA2840E

2013 EX

TM-280

< UNIT DISASSEMBLY AND ASSEMBLY >

[7AT: RE7R01A]

OIL PUMP, 2346 BRAKE, FRONT BRAKE PISTON

14. Remove O-ring from oil pump housing.

15. Remove O-ring (1) from oil pump cover.

Assembly

INFOID:0000000008285941

1.

Install O-ring (1) to oil pump cover.

2.

Install O-ring to oil pump housing.

SCIA2841E

JPDIA1102ZZ

JPDIA1102ZZ

SCIA2841E

2013 EX

OIL PUMP, 2346 BRAKE, FRONT BRAKE PISTON

TM-281

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[7AT: RE7R01A]

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3.

Using the drift (SST), install oil pump housing oil seal to the oil
pump housing until it is flush.

CAUTION:

• Never reuse oil seal.
• Apply ATF to oil seal.

4.

Install oil pump housing to oil pump cover and tighten bolts (

)

to the specified torque in numerical order shown in the figure
after temporarily tightening them.

5.

Install D-ring (large) (1) and D-ring (small) (2) to 2346 brake pis-
ton.

6.

Install 2346 brake piston (1) to oil pump assembly.

7.

Install D-ring (inner) (1) and D-ring (outer) (2) to front brake pis-
ton.

SCIA5313E

JPDIA1101ZZ

JPDIA1100ZZ

JSDIA1722ZZ

JPDIA1098ZZ

2013 EX

TM-282

< UNIT DISASSEMBLY AND ASSEMBLY >

[7AT: RE7R01A]

OIL PUMP, 2346 BRAKE, FRONT BRAKE PISTON

8.

Install front brake piston (1) to oil pump assembly.

9.

Install 2346 brake spring retainer (1) to oil pump assembly.

10. Set the clutch spring compressor [SST: KV31102400 (J-34285

and J-34285-87)] (A) on 2346 brake spring retainer and install
snap ring (fixing 2346 brake spring retainer) (1) to oil pump
assembly while compressing return spring.

CAUTION:

Be careful not to expand snap ring excessively.

11. Install front brake spring retainer (1) to oil pump assembly.

12. Set the clutch spring compressor [SST: KV31103800 (

—

)]

(A) on front brake spring retainer and install snap ring (fixing
front brake spring retainer) (1) to oil pump assembly while com-
pressing return spring.

CAUTION:

Be careful not to expand snap ring excessively.

JSDIA1723ZZ

JPDIA1096ZZ

B

:  Press

JSDIA1730ZZ

JPDIA1094ZZ

JSDIA1729ZZ

2013 EX

OIL PUMP, 2346 BRAKE, FRONT BRAKE PISTON

TM-283

< UNIT DISASSEMBLY AND ASSEMBLY >

[7AT: RE7R01A]

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13. Install seal ring (1) to oil pump assembly.

14. Install 2346 brake component part (retaining plate, drive plates,

driven plates, dish plate and snap ring) to oil pump assembly.

CAUTION:

Check the order of plates.

15. Install snap ring (1) from oil pump assembly using a flat-bladed

screwdriver (A).

CAUTION:

• Be careful not to scratch oil pump cover and 2346 brake

retaining plate.

• Be careful not to damage snap ring.

• Never install snap ring mating part (A) to the clearance

groove [(B) shown in the figure] of oil pump cover.

Inspection and Adjustment

INFOID:0000000008285942

INSPECTION AFTER DISASSEMBLY

Each Snap Ring

Check for deformation, fatigue or damage. If necessary, replace snap ring.

Each Spring Retainer

Check for deformation, fatigue or damage. If necessary, replace spring retainer.

2346 Brake Retaining Plate/Drive Plates/Driven Plates/Dish Plate

JPDIA1092ZZ

1

: Dish plate

2

: Driven plate (four pieces)

3

: Drive plate (four pieces)

4

: Retaining plate

5

:  Snap  ring

JPDIA1152ZZ

JPDIA1090ZZ

JSDIA1724ZZ

2013 EX

TM-284

< UNIT DISASSEMBLY AND ASSEMBLY >

[7AT: RE7R01A]

OIL PUMP, 2346 BRAKE, FRONT BRAKE PISTON

Check facing for burns, cracks or damage. If necessary, replace the damaged plate.

ADJUSTMENT AFTER ASSEMBLY

2346 Brake Clearance

Set a dial indicator (A) as shown in the figure. Blow air into 2346
brake oil pressure hole (B), and measure 2346 brake clearance. If
clearance is outside the specified value, adjust clearance by select-
ing an appropriate snap ring (1). Refer to 

TM-228, "Oil Channel"

.

CAUTION:

Never exceed the specified air pressure value.

Air pressure

: 300 kPa (3.06 kg/cm

2

, 43.5 psi)

2346 brake 
clearance

: Refer to 

TM-304, "2346 Brake Clear-

ance"

.

JPDIA1148ZZ

2013 EX

UNDER DRIVE CARRIER, FRONT BRAKE HUB

TM-285

< UNIT DISASSEMBLY AND ASSEMBLY >

[7AT: RE7R01A]

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UNDER DRIVE CARRIER, FRONT BRAKE HUB

Exploded View

INFOID:0000000008285943

Disassembly

INFOID:0000000008285944

1.

Remove snap ring (1) from front brake hub using a flat-bladed
screwdriver.

CAUTION:

• Be careful not to scratch front brake hub and under drive

carrier assembly.

• Be careful not to damage snap ring.

2.

Remove under drive carrier assembly (1) from front brake hub.

1.

Snap ring

2.

Under drive carrier assembly

3.

Front brake hub

Refer to 

GI-4, "Components"

 for symbols in the figure.

JPDIA1127ZZ

JPDIA1128ZZ

JPDIA1129ZZ

2013 EX

TM-286

< UNIT DISASSEMBLY AND ASSEMBLY >

[7AT: RE7R01A]

UNDER DRIVE CARRIER, FRONT BRAKE HUB

3.

Remove snap ring (1) from front brake hub using a flat-bladed
screwdriver.

CAUTION:

• Be careful not to scratch front brake hub.
• Be careful not to damage snap ring.

Assembly

INFOID:0000000008285945

1.

Install snap ring (1) to front brake hub.

CAUTION:

Be careful not to damage snap ring.

2.

Install under drive carrier assembly (1) to front brake hub.

3.

Install snap ring (1) to front brake hub using a flat-bladed screw-
driver.

CAUTION:

• Be careful not to scratch front brake hub.
• Be careful not to damage snap ring.

Inspection

INFOID:0000000008285946

INSPECTION AFTER DISASSEMBLY

• Each Snap Ring

Check for deformation, fatigue or damage. If necessary, replace snap ring.

• Under Drive Carrier Assembly

Check for deformation, fatigue or damage. If necessary, replace under drive carrier assembly.

• Front Brake Hub

JPDIA1130ZZ

JPDIA1130ZZ

JPDIA1129ZZ

JPDIA1128ZZ

2013 EX

UNDER DRIVE CARRIER, FRONT BRAKE HUB

TM-287

< UNIT DISASSEMBLY AND ASSEMBLY >

[7AT: RE7R01A]

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Check for deformation, fatigue or damage. If necessary, replace front brake hub.

2013 EX

TM-288

< UNIT DISASSEMBLY AND ASSEMBLY >

[7AT: RE7R01A]

FRONT CARRIER, INPUT CLUTCH, REAR INTERNAL GEAR

FRONT CARRIER, INPUT CLUTCH, REAR INTERNAL GEAR

Exploded View

INFOID:0000000008285947

1.

Needle bearing

2.

Snap ring

3.

Front carrier assembly

4.

Needle bearing

5.

O-ring

6.

Seal ring

7.

Input clutch drum

8.

Input clutch dish plate

9.

Input clutch driven plate

10.

Input clutch drive plate

11.

Input clutch retaining plate

12. Snap ring

13.

Rear internal gear

Refer to 

GI-4, "Components"

 for symbols in the figure.

JPDIA1189ZZ

2013 EX