Unit Disassembly And Assembly: Disassembly: Disassembly

WARNING: This page is about a different car, the 2012 Nissan Pathfinder. However, it is still accessible from the selected car via links, so may be relevant.

CAUTION: Do not disassemble parts behind Drum Support. Refer to "CROSS-SECTIONAL VIEW ".

Drain A/T fluid through drain plug.
Remove torque converter by holding it firmly and turning while pulling straight out.

Fig 1: Removing/Installing Torque Converter
Courtesy of NISSAN NORTH AMERICA, INC.
Check torque converter one-way clutch using a check tool as shown.
1. Insert a check tool into the groove of bearing support built into one-way clutch outer race.
2. While holding bearing support with a check tool, rotate one-way clutch spline using suitable tool.
3. Make sure that inner race rotates clockwise only. If not, replace torque converter assembly.
  
  Fig 2: Checking Torque Converter One-Way Clutch
  Courtesy of NISSAN NORTH AMERICA, INC.
Remove bolts and converter housing from transmission case.
CAUTION: Do not scratch converter housing.
- Self-sealing bolt (A)
  
  Fig 3: Locating Self-Sealing Bolts
  Courtesy of NISSAN NORTH AMERICA, INC.
Remove O-ring from input clutch assembly.

Fig 4: Identifying Input Clutch Assembly O-Ring
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Remove oil pump assembly to transmission case bolts.

Fig 5: Locating Transmission Case Bolts
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Remove the oil pump assembly evenly from the transmission case using Tools.
Tool number: ST25850000 (J-25721-A)
CAUTION:
- Fully tighten the sliding hammer screws.
- Make sure that bearing race is installed to the oil pump assembly edge surface.
  
  Fig 6: Removing Oil Pump Assembly From Transmission Case Using Tool
  Courtesy of NISSAN NORTH AMERICA, INC.
Remove O-ring from oil pump assembly.

Fig 7: Removing/Installing Oil Pump Assembly O-Ring
Courtesy of NISSAN NORTH AMERICA, INC.
Remove bearing race from oil pump assembly.

Fig 8: Identifying Oil Pump Assembly Bearing Race
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Remove needle bearing from front sun gear.

Fig 9: Identifying Front Sun Gear Needle Bearing
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Remove front sun gear assembly from front carrier assembly.
NOTE: Remove front sun gear by rotating it left and right.

Fig 10: Rotating Front Sun Gear To Left And Right
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Remove seal rings from input clutch assembly.

Fig 11: Removing Input Clutch Assembly Seal Rings
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Remove front carrier assembly (with input clutch assembly and rear internal gear) from rear carrier assembly.
CAUTION: Do not remove it with needle bearing.

Fig 12: Identifying Front Carrier Assembly
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Loosen lock nut and remove band servo anchor end pin from transmission case.

Fig 13: Identifying Band Servo Anchor End Pin And Lock Nut
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Remove brake band from transmission case.

Fig 14: Identifying Transmission Case Brake Band
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CAUTION:
- To prevent brake linings from cracking or peeling, do not stretch the flexible band unnecessarily. When removing the brake band, always secure it with a clip as shown.
- Check brake band facing for damage, cracks, wear or burns.
  
  Fig 15: Identifying Brake Band Clip
  Courtesy of NISSAN NORTH AMERICA, INC.
Remove mid carrier assembly and rear carrier assembly as a unit.

Fig 16: Identifying Mid Carrier Assembly
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Remove mid carrier assembly from rear carrier assembly.

Fig 17: Removing Mid Carrier Assembly From Rear Carrier Assembly
Courtesy of NISSAN NORTH AMERICA, INC.
Remove needle bearing (front side) from mid carrier assembly.

Fig 18: Removing/Installing Mid Carrier Assembly Needle Bearing
Courtesy of NISSAN NORTH AMERICA, INC.
Remove needle bearing (rear side) from mid carrier assembly.

Fig 19: Removing/Installing Mid Carrier Assembly Needle Bearing
Courtesy of NISSAN NORTH AMERICA, INC.
Remove bearing race from rear carrier assembly.

Fig 20: Removing/Installing Rear Carrier Assembly Bearing Race
Courtesy of NISSAN NORTH AMERICA, INC.
Remove needle bearing from rear carrier assembly.

Fig 21: Removing/Installing Rear Carrier Assembly Needle Bearing
Courtesy of NISSAN NORTH AMERICA, INC.
Remove mid sun gear assembly, rear sun gear assembly and high and low reverse clutch hub as a unit.
CAUTION: Remove them with bearing race and needle bearing.

Fig 22: Identifying Mid And Rear Sun Gear Assembly
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Remove high and low reverse clutch assembly from direct clutch assembly.
CAUTION: Make sure that needle bearing is installed to the high and low reverse clutch assembly edge surface.

Fig 23: Identifying High And Low Reverse Clutch Assembly
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Remove needle bearing from drum support.

Fig 24: Identifying Needle Bearing
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Remove direct clutch assembly from reverse brake.

Fig 25: Identifying Direct Clutch Assembly
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Remove snap ring from A/T assembly harness connector.

Fig 26: Removing Snap Ring From A/T Assembly Harness Connector
Courtesy of NISSAN NORTH AMERICA, INC.
Push A/T assembly harness connector.
CAUTION: Do not damage connector.

Fig 27: Pushing A/T Assembly Harness Connector
Courtesy of NISSAN NORTH AMERICA, INC.
Remove oil pan and oil pan gasket. Refer to "REMOVAL AND INSTALLATION ".
Check foreign materials in oil pan to help determine causes of malfunction. If the A/T fluid is very dark, smells burned, or contains foreign particles, the frictional material (clutches, band) may need replacement. 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, perform A/T fluid cooler cleaning. Refer to "A/T FLUID COOLER CLEANING "
  
  Fig 28: Checking Foreign Materials In Oil Pan
  Courtesy of NISSAN NORTH AMERICA, INC.
Remove magnets from oil pan.

Fig 29: Identifying Oil Pan Magnets
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Disconnect output speed sensor connector (1).
CAUTION: Do not damage connector.

Fig 30: Identifying Output Speed Sensor Connector
Courtesy of NISSAN NORTH AMERICA, INC.
Straighten terminal clip (<=) to free output speed sensor harness.

Fig 31: Identifying Output Speed Sensor Harness Terminal Clip
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Remove bolts (A), (B) and (C) from control valve with TCM.

<=: Front

Bolt symbol	Length mm (in)	Number of bolts
A	42 (1.65)	5
B	55 (2.17)	6
C	40 (1.57)	1

Fig 32: Identifying TCM Control Valve Mounting Bolts

Courtesy of NISSAN NORTH AMERICA, INC.

Remove control valve with TCM from transmission case.
CAUTION: When removing, be careful with the manual valve notch and manual plate height. Remove it vertically.

Fig 33: Removing TCM Control Valve From Transmission Case
Courtesy of NISSAN NORTH AMERICA, INC.
Remove plug (1) with bracket (2) from control valve with TCM.

Fig 34: Locating TCM Control Valve Bracket Mounting Bolts
Courtesy of NISSAN NORTH AMERICA, INC.
Remove bracket (1) from plug (2).

Fig 35: Removing/Installing Plug Bracket
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Remove O-ring (1) from plug (2).

Fig 36: Identifying O-Ring And Plug
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Remove O-ring from A/T assembly harness connector.

Fig 37: Identifying O-Ring And A/T Assembly Harness Connector
Courtesy of NISSAN NORTH AMERICA, INC.
Disconnect TCM connectors.
CAUTION: Do not damage connectors.

Fig 38: Identifying TCM Connectors
Courtesy of NISSAN NORTH AMERICA, INC.
Remove A/T assembly harness connector from control valve with TCM using suitable tool.

Fig 39: Removing A/T Assembly Harness Connector From TCM Control Valve Using Tool
Courtesy of NISSAN NORTH AMERICA, INC.
Disconnect TCM connector (1) and transmission range switch connector (2).
CAUTION: Do not damage connectors.

Fig 40: Identifying TCM And Transmission Range Switch Connectors
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Remove rear extension assembly (2WD models) or adapter case assembly (4WD models) according to the following procedures.
1. 2WD models
  1. Remove bolts for rear extension assembly and transmission case.
    
    Fig 41: Locating Rear Extension Assembly Mounting Bolts
    Courtesy of NISSAN NORTH AMERICA, INC.
  2. Tap rear extension assembly with soft hammer.
    
    Fig 42: Taping Rear Extension Assembly Using Soft Hammer
    Courtesy of NISSAN NORTH AMERICA, INC.
  3. Remove rear extension assembly (with needle bearing) from transmission case.
    
    Fig 43: Removing/Installing Transmission Case Rear Extension Assembly
    Courtesy of NISSAN NORTH AMERICA, INC.
2. 4WD models
  1. Remove adapter case to transmission case bolts.
    - Self-sealing bolts (2)
  2. Remove brackets (1) (if equipped).
    
    Fig 44: Locating Brackets And Self-Sealing Bolt
    Courtesy of NISSAN NORTH AMERICA, INC.
  3. Tap adapter case assembly using suitable tool.
    
    Fig 45: Tapping Adapter Case Assembly Using Soft Hammer
    Courtesy of NISSAN NORTH AMERICA, INC.
  4. Remove adapter case assembly (with needle bearing) from transmission case.
    
    Fig 46: Removing/Installing Transmission Case Adapter Case Assembly
    Courtesy of NISSAN NORTH AMERICA, INC.
  5. Remove gasket from transmission case.
    
    Fig 47: Removing/Installing Transmission Case Gasket
    Courtesy of NISSAN NORTH AMERICA, INC.
Remove bearing race from output shaft.

Fig 48: Removing/Installing Output Shaft Bearing Race
Courtesy of NISSAN NORTH AMERICA, INC.
Remove output shaft from transmission case by rotating left and right.

Fig 49: Rotating Output Shaft Left And Right
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Remove parking gear from output shaft.

Fig 50: Removing/Installing Output Shaft Parking Gear
Courtesy of NISSAN NORTH AMERICA, INC.
Remove seal rings from output shaft.

Fig 51: Identifying Output Shaft Seal Rings
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Remove needle bearing from transmission case.

Fig 52: Identifying Needle Bearing
Courtesy of NISSAN NORTH AMERICA, INC.
Remove output speed sensor (1) from transmission case.

Fig 53: Identifying Output Speed Sensor
Courtesy of NISSAN NORTH AMERICA, INC.
CAUTION:
- Do not subject it to impact by dropping or hitting it.
- Do not disassemble.
- Do not allow metal filings or any foreign material to get on the sensor's front edge magnetic area.
- Do not place in an area affected by magnetism.
Remove reverse brake snap ring using two flat-bladed screwdrivers.
NOTE: Press out snap ring from the transmission case oil pan side gap using a flat-bladed screwdriver, and remove it using a another screwdriver.
Remove reverse brake retaining plate from transmission case.
- Check facing for burns, cracks or damage. If necessary, replace the plate.
  
  Fig 54: Removing Reverse Brake Snap Ring Using Flat-Bladed Screwdrivers
  Courtesy of NISSAN NORTH AMERICA, INC.
Remove N-spring from transmission case.

Fig 55: Identifying N-Spring, Transmission Case, Driven And Drive Plate
Courtesy of NISSAN NORTH AMERICA, INC.
Remove reverse brake drive plates, driven plates and dish plate from transmission case.
- Check facing for burns, cracks or damage. If necessary, replace the plate .
  
  Fig 56: Removing Reverse Brake Components From Transmission Case
  Courtesy of NISSAN NORTH AMERICA, INC.
Remove snap ring using suitable tool.

Fig 57: Identifying Snap Ring
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Remove spring retainer and return spring from transmission case.

Fig 58: Identifying Spring Retainer
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Remove seal rings from drum support.

Fig 59: Identifying Mid Sun Gear Seal Rings
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Remove needle bearing from drum support edge surface.

Fig 60: Identifying Needle Bearing
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Remove reverse brake piston from transmission case using compressed air. Refer to "OIL CHANNEL ".
CAUTION: Care should be taken not to abruptly blow air. It makes the piston incline, and as a result, it becomes hard to disassemble the pistons.

Fig 61: Removing Reverse Brake Piston From Transmission Case Using Compressed Air
Courtesy of NISSAN NORTH AMERICA, INC.
Remove D-rings from reverse brake piston.

Fig 62: Identifying D-Rings And Reverse Brake Piston
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Knock out retaining pin using suitable tool.

Fig 63: Identifying Retaining Pin, Manual Plate And Shaft
Courtesy of NISSAN NORTH AMERICA, INC.
Remove manual shaft retaining pin using suitable tool.

Fig 64: Removing Manual Shaft Retaining Pin Using Tool
Courtesy of NISSAN NORTH AMERICA, INC.
Remove manual plate (with parking rod) from manual shaft.

Fig 65: Removing/Installing Manual Shaft Plate
Courtesy of NISSAN NORTH AMERICA, INC.
Remove parking rod from manual plate.

Fig 66: Removing/Installing Manual Plate Parking Rod
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Remove manual shaft from transmission case.

Fig 67: Removing/Installing Transmission Case Manual Shaft
Courtesy of NISSAN NORTH AMERICA, INC.
Remove manual shaft oil seals using suitable tool.
CAUTION: Do not scratch transmission case.

Fig 68: Removing Manual Shaft Oil Seals Using Flat-Bladed Screwdriver
Courtesy of NISSAN NORTH AMERICA, INC.
Remove detent spring and spacer from transmission case.

Fig 69: Identifying Detent Spring And Spacer
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Remove snap ring from transmission case using suitable tool.

Fig 70: Removing/Installing Transmission Case Snap Ring
Courtesy of NISSAN NORTH AMERICA, INC.
Remove servo assembly (with return spring) from transmission case.

Fig 71: Removing/Installing Transmission Case Servo Assembly
Courtesy of NISSAN NORTH AMERICA, INC.
Remove return spring from servo assembly.

Fig 72: Removing/Installing Servo Assembly Return Spring
Courtesy of NISSAN NORTH AMERICA, INC.
Remove O-rings from servo assembly.

Fig 73: Removing/Installing Servo Assembly O-Rings
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Remove needle bearing (1) from rear extension (2WD models) or adapter case (4WD models).

Fig 74: Identifying Rear Extension Needle Bearing
Courtesy of NISSAN NORTH AMERICA, INC.
Remove parking actuator support from rear extension (2WD models) or adapter case (4WD models).

Fig 75: Removing/Installing Rear Extension Parking Actuator Support
Courtesy of NISSAN NORTH AMERICA, INC.
Remove parking pawl (with return spring) and pawl shaft from rear extension (2WD models) or adapter case (4WD models).

Fig 76: Removing/Installing Rear Extension Parking Pawl
Courtesy of NISSAN NORTH AMERICA, INC.
Remove return spring (1) from parking pawl (2).

Fig 77: Identifying Return Spring And Parking Pawl
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Remove rear oil seal from rear extension (2WD models) or adapter case (4WD models) using suitable tool.
CAUTION: Do not scratch rear extension (2WD models) or adapter case (4WD models).

Fig 78: Removing Rear Oil Seal From Rear Extension Using Tool
Courtesy of NISSAN NORTH AMERICA, INC.