FixVault
Home › Jeep › 2012 › Wrangler Rubicon, Automatic Trans › Repair and Diagnosis › Transmission › Transmission Control Systems › Nag1 Automatic Transmission (Service Information) › Unit, ELECTROHYDRAULIC Control › Assembly › Assembly

Unit, ELECTROHYDRAULIC Control: Assembly: Assembly

CAUTION:

Make certain all valves and springs are assembled correctly. Failure to follow this caution may result in transmission failure.

NAG1 VALVE BODY SPRING DIMENSION
VALVE  SPRING FREE LENGTH  TOTAL COILS 
2-3 Holding  18.8 -19.6 mm (0.74 - 0.77 in.) 12
T/C Clutch Damper  37.5 - 38.5 mm (1.48 - 1.51 in.) 19.5
1-2 / 4-5 Overlap  20.95 - 21.65 mm (0.82 - 0.85 In.) 14.5
Shift Pressure Regulator  22.4 - 23.6 mm (0.88 - 0.93 in.) 14.5
Control Valve Pressure Regulator  79.2 - 82.4 mm (3.12 - 3.24 in.) 29
Shift Solenoid Pressure Regulating Valve  32.6 - 34.4 mm (1.28 - 1.35 in.) 15.5
T/C Clutch (LU) Regulator  22.8 - 23.6 mm (0.90 - 0.93 in.) 18.5
B2 Shift Valve  25.8 - 27.0 mm (1.01 - 1.06 in.) 16.5
3/4 Over Lap  21.0 - 20.4 mm (0.83 - 0.80 in.) 13
3-4 Holding, 1-2 / 4-5 Holding, 1-2 / 4-5 Shift Pressure  21.1 - 22.5 mm (0.83 - 0.88 in.) 14
3-4 Command, 3-4 Shift Pressure, 1-2 / 4-5 Command, 2-3 Shift Pressure, 2-3 Command  23.9 - 25.3 mm (0.94 -1.00 in.) 11.5
Lubricating Pressure Regulating Valve  64.8 - 68.2 mm (2.55 - 2.68 in.) 24
2-3 Overlap  16.9 - 18.7 mm (0.66 - 0.74 in.) 13
Line Pressure Regulator  43.8 - 46.2 mm (1.72 - 1.82 in.) 13.5
NOTE:

Pay great attention to cleanliness for all work on the shift plate. Fluffy cloths must not be used. Leather cloths are particularly good. After dismantling, all parts must be washed and blown out with compressed-air, noting that parts may be blown away.

Fig 1: Pressure Feed Valve Location
GC0081243Courtesy of CHRYSLER GROUP, LLC
1 - PRESSURE FEED VALVE
  1. Install the pressure supply valve (1) into the valve body. Refer to Fig 1.
    NAG1 VALVE BODY SPRING DIMENSION
    VALVE  SPRING FREE LENGTH  TOTAL COILS 
    2-3 Holding (2)  18.8 -19.6 mm (0.74 - 0.77 in.) 12
    T/C Clutch Damper (5)  37.5 - 38.5 mm (1.48 - 1.51 in.) 19.5
    T/C Clutch (LU) Regulator (6)  22.8 - 23.6 mm (0.90 - 0.93 in.) 18.5
    B2 Shift Valve (1)  25.8 - 27.0 mm (1.01 - 1.06 in.) 16.5
    2-3 Shift Pressure (4), 2-3 Command (3)  23.9 - 25.3 mm (0.94 -1.00 in.) 11.5
    Fig 2: Lower Valve Body Section 1
    GC0081238Courtesy of CHRYSLER GROUP, LLC
    1 - B2 SHIFT VALVE 5 - TCC DAMPER VALVE - if equipped
    2 -2-3 HOLDING PRESSURE SHIFT VALVE 6 - TCC LOCK-UP REGULATOR VALVE
    3 - 2-3 COMMAND VALVE 7 - SIDE COVER
    4 - 2-3 SHIFT PRESSURE  
  2. Lubricate and install the B-2 Shift Valve assembly (1), 2-3 Holding Pressure Valve assembly (2), 2-3 Command Valve assembly (3), 2-3 Shift Pressure Shift Valve assembly (4), TCC Damper Valve (5) if equipped and the T/CC Lock-Up Regulator Valve assembly (6) into the valve body.
  3. Install the side cover and the screws holding the side cover (7) to the valve body and valve housing. Tighten the screws to 4 N.m (35 in.lbs.).
    NAG1 VALVE BODY SPRING DIMENSION
    VALVE  SPRING FREE LENGTH  TOTAL COILS 
    1-2 / 4-5 Overlap (1)  20.95 - 21.65 mm (0.82 - 0.85 In.) 14.5
    Shift Pressure Regulator (2)  22.4 - 23.6 mm (0.88 - 0.93 in.) 14.5
    Control Valve Pressure Regulator (3)  79.2 - 82.4 mm (3.12 - 3.24 in.) 29
    Shift Solenoid Pressure Regulating Valve (4)  32.6 - 34.4 mm (1.28 - 1.35 in.) 15.5
    Fig 3: Lower Valve Body Section 2
    GC0081239Courtesy of CHRYSLER GROUP, LLC
    1 - 1-2 / 4-5 OVERLAP REGULATING SLEEVE AND PISTON 4 - SHIFT SOLENOID PRESSURE REGULATING VALVE
    2 - SHIFT PRESSURE REGULATING VALVE 5 - SIDE COVER
    3 - CONTROL VALVE PRESSURE REGULATOR  
  4. Lubricate and install the 1-2 / 4-5 Overlap Regulating Valve, Sleeve, and Piston assembly (1), Shift Pressure Regulating Valve assembly (2), Control Valve Pressure Regulator Valve assembly (3) and Shift Solenoid Pressure Regulating Valve assembly (4) into the valve body.
  5. Install the side cover and the screws holding the side cover (5) to the valve body and valve housing. Tighten the screws to 4 N.m (35 in.lbs.).
    NAG1 VALVE BODY SPRING DIMENSION
    VALVE  SPRING FREE LENGTH  TOTAL COILS 
    1-2 / 4-5 Holding (2), 1-2 / 4-5 Shift Pressure (3)  21.1 - 22.5 mm (0.83 - 0.88 in.) 14
    1-2 / 4-5 Command (1)  23.9 - 25.3 mm (0.94 -1.00 in.) 11.5
    Fig 4: Lower Valve Body Section 3
    GC0081240Courtesy of CHRYSLER GROUP, LLC
    1 - 1-2 / 4-5 COMMAND VALVE 3 - 1-2 / 4-5 SHIFT PRESSURE
    2 - 1-2 / 4-5 HOLDING PRESSURE SHIFT VALVE 4 - SIDE COVER
  6. Lubricate and install the 1-2 / 4-5 Command valve assembly (1), 1-2 / 4-5 Holding Pressure Shift Valve (2) and the 1-2 / 4-5 Shift Pressure assembly (3) into the valve body.
  7. Install the side cover and the screws holding the side cover (4) to the valve body and valve housing. Tighten the screws to 4 N.m (35 in.lbs.).
    NAG1 VALVE BODY SPRING DIMENSION
    VALVE  SPRING FREE LENGTH  TOTAL COILS 
    3/4 Over Lap (5)  20.4 - 21.0 mm (0.80 - 0.83 in.) 13
    3-4 Holding (2)  21.1 - 22.5 mm (0.83 - 0.88 in.) 14
    3-4 Command (3), 3-4 Shift Pressure (4)  23.9 - 25.3 mm (0.94 -1.00 in.) 11.5
    Fig 5: Upper Valve Body Section 1
    GC0081241Courtesy of CHRYSLER GROUP, LLC
    1 - SELECTOR VALVE 4 - 3-4 SHIFT PRESSURE
    2 - 3-4 HOLDING PRESSURE SHIFT VALVE 5 - 3-4 OVERLAP REGULATING VALVE, SLEEVE, AND PISTON
    3 - 3-4 COMMAND VALVE 6 - SIDE COVER
  8. Lubricate and install the sector valve (1).
  9. Lubricate and install 3-4 Holding Pressure Shift Valve assembly (2), 3-4 Command Valve assembly (3), 3-4 Shift Pressure assembly (4) and the 3-4 Overlap Regulating Valve Sleeve and Piston assembly (5) into the valve body.
  10. Install the side cover and the screws holding the side cover (6) to the valve body and valve housing. Tighten the screws to 4 N.m (35 in.lbs.).
    NAG1 VALVE BODY SPRING DIMENSION
    VALVE  SPRING FREE LENGTH  TOTAL COILS 
    Lubricating Pressure Regulating Valve (2)  64.8 - 68.2 mm (2.55 - 2.68 in.) 24
    2-3 Overlap (3)  16.9 - 18.7 mm (0.66 - 0.74 in.) 13
    Line Pressure Regulator (1)  43.8 - 46.2 mm (1.72 - 1.82 in.) 13.5
    Fig 6: Upper Valve Body Section 2
    GC0081242Courtesy of CHRYSLER GROUP, LLC
    1 - LINE PRESSURE REGULATING VALVE 3 - 2-3 OVERLAP REGULATING VALVE, SLEEVE, AND PISTON
    2 - LUBRICATING PRESSURE REGULATING VALVE 4 - SIDE COVER
  11. Lubricate and install the Operating Pressure Regulating Valve assembly (1), Lubricating Pressure Regulating Valve assembly (2) and the 2-3 Overlap Regulating Valve, Sleeve and Piston assembly (3) into the valve body.
  12. Install the side cover and the screws holding the side cover (6) to the valve body and valve housing. Tighten the screws to 4 N.m (35 in.lbs.).
    Fig 7: Check Balls And Strainer Location
    GC0081237Courtesy of CHRYSLER GROUP, LLC
    1 - STEEL CHECK BALLS
    2 - CENTRAL STRAINER
    3 - STEEL CHECK BALLS
    4 - PLASTIC CHECK BALLS
    5 - PLAIN DOWEL PIN
    NOTE:

    A total of 12 valve balls are located in the valve body, four made from plastic (4) and eight from steel (1, 3).

  13. Install all check balls (1, 3, 4) and the central strainer (2). Refer to Fig 7.
    Fig 8: Converter Lock-Up Solenoid Valve Strainer Location
    GC0081236Courtesy of CHRYSLER GROUP, LLC
    1 - CONVERTER LOCK-UP SOLENOID STRAINER
  14. Install the strainer (1) in the inlet to torque converter lock-up control solenoid valve. Refer to Fig 8.
    Fig 9: Shift Plate Components
    GC0081234Courtesy of CHRYSLER GROUP, LLC
    1 - BOLTS - 29
    2 - VALVE HOUSING
    3 - SEALING PLATE
    4 - VALVE BODY
    5 - LEAF SPRING
  15. Position the sealing plate (3) onto the valve body (4). Refer to Fig 9.
  16. Install the valve housing (2) onto the valve body (4) and sealing plate (3).
  17. Install the shift plate Torx® bolts (1). Refer to Fig 9. Tighten the bolts to 8 N.m (71 in.lbs.).
  18. Install leaf spring (5). Refer to Fig 9.
    Fig 10: Solenoid Valve Strainer Locations
    GC0081235Courtesy of CHRYSLER GROUP, LLC
    1 - SOLENOID VALVE STRAINERS
  19. Install the strainers (1) for the modulating pressure and shift pressure control solenoid valves into the valve housing. Refer to Fig 10.
    Fig 11: Electrical Unit Components
    GC0081222Courtesy of CHRYSLER GROUP, LLC
    1 - SOLENOID CAP (if equipped)
    2 - SOLENOID CAP (if equipped)
    3 - BOLT - M6X32
    4 - BOLT - M6X30
    5 - LEAF SPRING
    6 - MODULATING PRESSURE REGULATING SOLENOID VALVE
    7 - SHIFT PRESSURE REGULATING SOLENOID
    8 - 3-4 SHIFT SOLENOID
    9 - TORQUE CONVERTER LOCK-UP SOLENOID
    10 - 1-2/4-5 SHIFT SOLENOID
    11 - 2-3 SHIFT SOLENOID
    12 - ELECTRICAL CONTROL UNIT
    13 - SHIFT PLATE
  20. Install the electrohydraulic control module (12) onto the shift plate (13). Refer to Fig 11.
  21. Bend the retaining lug on stiffening rib on transmission oil temperature sensor to retain the electrohydraulic control module.
  22. Install the solenoid valves (6 - 11) into shift plate (13).
    NOTE:

    Check O-rings on solenoid valves for damage and replace if necessary.

  23. Install the leaf springs (5).
  24. Install the Torx® socket bolts (3, 4). Refer to Fig 11. Tighten the bolts to 8 N.m (71 in.lbs.).
    NOTE:

    Pay attention to the different lengths of the Torx® socket bolts.

  25. Install the solenoid caps (1, 2) if equipped.
  26. Install the electrohydraulic unit into the vehicle.
About FixVault