307-01A Automatic Transmission - Vehicles With: 6-Speed Automatic Transmission - 6F50 2013 - 2014 MKZ
Overhaul Procedure revision date: 02/25/2013

Transmission

  1. Special Tool(s) : 307-580 Holding Fixture
  1. Special Tool(s) : 307-346 (T97T-7902-A) Retainer, Torque Converter
  1. NOTICE: The torque converter is heavy. Be careful not to drop it or damage will result.

    NOTICE: Only thread the bolts 6 to 8 turns or do not exceed 12 mm (0.472 in) into the torque converter. If the bolts are threaded too far, damage to the torque converter clutch surface can occur causing torque converter failure.

    1. Inspect the sealing surface for a groove worn from the seal. Install a new torque converter if necessary.
    1. A new or remanufactured torque converter must be installed if one or more of the following statements is true:
    1. If none of the above conditions are present, continue with the following fluid inspection.
    1. Pour a small amount of transmission fluid from the torque converter onto an absorbent white tissue or through a paper filter.
    1. Examine the fluid for contaminants. The fluid must be free of metallic contaminants.
  1. NOTICE: Do not use water-based cleaners or mineral spirits to clean or flush the torque converter or transmission damage will occur. Use only clean transmission fluid designated for the transmission and torque converter being serviced.

    1. Drain the remaining fluid from the torque converter. Apply the specified amount of fluid.
      Material : Motorcraft® MERCON® LV Automatic Transmission Fluid / XT-10-QLVC (WSS-M2C938-A) (MERCON® LV )
      Volume : 2.01  qt ( 1.9  L)
  1. NOTE: Note the location of the studbolts for assembly.

  1. Slide the TR sensor electrical connector lock tab over.
  1. NOTICE: Handle the solenoid body with care or damage to the solenoid body may occur.

  1. Clean and inspect the main control valve body for damage. If damage is found install a new main control valve body. If the main control valve body is not damaged, disassemble the main control valve body and clean it.
    Refer to: Main Control Valve Body (307-01A Automatic Transmission - Vehicles With: 6-Speed Automatic Transmission - 6F50, Overhaul).
  1. NOTE: The location of the tab on the bottom pressure plate is aligned with the gap for the low One-Way Clutch (OWC) snap ring.

  1. Check that the bearings spin freely and do not move back and forth or side to side excessively.
  1. Check that the bearings spin freely and do not move back and forth or side to side excessively.
  1. Check that the bearings spin freely and do not move back and forth or side to side excessively.
  1. NOTE: Note the orientation of the snap ring for assembly. The snap ring gap must fit around the tab of the low/reverse clutch pressure plate.

  1. NOTICE: Do not clean in water or with water-based solvents. Damage to the component may occur.

    NOTE: The low One-Way Clutch (OWC) cannot be disassembled.

    Check for cracks and damaged splines. The internal splined section should rotate counterclockwise and lock when rotated clockwise.
  1. Check for burned or excessively worn surface.
  1. NOTE: Install the Compressor, Forward/Intermediate Spring 307-584 (307-584/1 and 307-584/2) with the stepped end of the cylinder facing upward when compressing the forward clutch piston return spring.

    Compress the forward clutch piston return spring.
    Special Tool(s) : 307-574 Forward Clutch Spring Compressor , 307-584 2-6 Spring Compressor

NOTE: The Compressor, Forward/Intermediate Spring 307-584 (307-584/1 and 307-584/2) and the Compressor, Forward Clutch Spring 307-574 (307-574/1 and 307-574/2) are not shown for clarity.

  1. NOTICE: Carefully pry on the transmission torque converter housing and the case to separate the torque converter housing from the case. Do not pry up on the silicone sealant mating surfaces, damage to the mating surfaces may occur. Carefully lift the torque converter housing off the dowel pins.

  1. NOTICE: If a differential bearing is damaged, a new bearing and bearing cup must be installed on both sides of the differential or excessive noise or transmission failure can occur.

  1. NOTICE: If a transfer shaft bearing is damaged, a new bearing and bearing cup must be installed on both sides of the transfer shaft or excessive noise or transmission failure can occur.

    1. Bearings
    1. Transfer shaft input gear
    1. Transfer shaft
    1. Park pawl wheel
  1. Special Tool(s) : 307-696 Remover, TRS Retaining Pin
  1. NOTICE: If the transfer shaft bearing cup is damaged, a new bearing and bearing cup must be installed on both sides of the transfer shaft or excessive noise or transmission failure can occur.

    If the transmission case side transfer shaft bearing cup is damaged, install a new bearing cup.
    Refer to: Transmission Case (307-01A Automatic Transmission - Vehicles With: 6-Speed Automatic Transmission - 6F50, Disassembly and Assembly of Subassemblies).
  1. NOTICE: If the differential bearing cup is damaged, a new bearing and bearing cup must be installed on both sides of the differential or excessive noise or transmission failure can occur.

    If the transmission case side differential bearing cup is damaged, install a new bearing cup.
    Refer to: Transmission Case (307-01A Automatic Transmission - Vehicles With: 6-Speed Automatic Transmission - 6F50, Disassembly and Assembly of Subassemblies).
  1. NOTE: Note the orientation of the fluid filter to the fluid pump.

    1. Pull the filter out of the bore of the fluid pump.
    1. If the filter seal did not come off with the filter, remove the seal from the pump.
  1. Clean and inspect the components of the pump assembly for wear or damage. Inspect the fluid drained from the pump for excessive metal or foreign material. If excessive wear, damage or excessive metal is found, replace the fluid pump as an assembly.
  1. NOTICE: If the transfer shaft bearing cup is damaged, a new bearing and bearing cup must be installed on both sides of the transfer shaft or excessive noise or transmission failure can occur.

    If the torque converter housing side transfer shaft bearing cup is damaged, install a new bearing cup.
    Refer to: Torque Converter Housing (307-01A Automatic Transmission - Vehicles With: 6-Speed Automatic Transmission - 6F50, Disassembly and Assembly of Subassemblies).
  1. NOTE: FWD vehicles

  1. NOTICE: If the differential bearing cup is damaged, a new bearing and bearing cup must be installed on both sides of the differential or excessive noise or transmission failure can occur.

    If the torque converter housing side differential bearing cup is damaged, install a new bearing cup.
    Refer to: Torque Converter Housing (307-01A Automatic Transmission - Vehicles With: 6-Speed Automatic Transmission - 6F50, Disassembly and Assembly of Subassemblies).
  1. General Equipment : Puller
  1. Clean and inspect the transmission case and torque converter housing for damage and install a new transmission case or torque converter housing if necessary.
  1. Compress the overdrive piston return spring.
    Special Tool(s) : 307-584 2-6 Spring Compressor , 307-589 Overdrive clutch and balance piston service set
    General Equipment : Hydraulic Press
  1. Using petroleum jelly, install the No. 1 thrust bearing on the overdrive/direct clutch assembly.
  1. Install the overdrive/direct clutch assembly in the rear cover.
  1. NOTICE: Only compress the direct clutch piston return spring far enough to take the tension from the direct clutch cylinder off the snap ring. If the piston is compressed too far, the piston alignment tab may be broken off.

    1. Do not contact the overdrive/direct clutch hub and shaft assembly with the direct clutch cylinder.
      Special Tool(s) : 307-584 2-6 Spring Compressor , 307-589 Overdrive clutch and balance piston service set
    1. Remove the snap ring.
  1. Using petroleum jelly, install the No. 1 thrust bearing on the overdrive/direct clutch assembly.
  1. Apply 483 kPa (70.05 psi) of air pressure.
  1. Soak the clutch plates.
    Material : Motorcraft® MERCON® LV Automatic Transmission Fluid / XT-10-QLVC (WSS-M2C938-A) (MERCON® LV )
  1. Apply petroleum jelly.
  1. Apply petroleum jelly.
  1. Apply petroleum jelly.
  1. NOTICE: Only compress the direct clutch piston return spring far enough to install the direct clutch cylinder snap ring. If the piston is compressed too far, the piston alignment tab may be broken off.

    NOTE: Align the tab on the direct clutch cylinder with the slot on the overdrive/direct clutch hub and shaft assembly.

    1. Do not contact the overdrive/direct clutch hub and shaft assembly with the direct clutch cylinder.
      Special Tool(s) : 307-584 2-6 Spring Compressor , 307-589 Overdrive clutch and balance piston service set
    1. Install the snap ring.
  1. Apply petroleum jelly.
  1. Apply petroleum jelly.
  1. NOTE: Push the overdrive clutch piston in the cylinder by hand using the Compressor, Overdrive Clutch, Balance Piston and Direct Clutch 307-589/1.

    Special Tool(s) : 307-589 Overdrive clutch and balance piston service set
  1. NOTE: Install the overdrive clutch piston return spring so that the holes are facing upward.

  1. Apply petroleum jelly.
  1. Compress the overdrive clutch piston return spring.
    Special Tool(s) : 307-584 2-6 Spring Compressor , 307-589 Overdrive clutch and balance piston service set
  1. Soak the clutch plates.
    Material : Motorcraft® MERCON® LV Automatic Transmission Fluid / XT-10-QLVC (WSS-M2C938-A) (MERCON® LV )
  1. Special Tool(s) : 307-584 2-6 Spring Compressor
    General Equipment : Hydraulic Press
  1. Special Tool(s) : 307-584 2-6 Spring Compressor , 307-588 Reverse clutch piston and retaining ring set
    General Equipment : Hydraulic Press
  1. Adjust the Input Shaft Support Seal Installer (Back Plate, Multiple Rings) 307-578/3 and repeat step to install the other 3 seals.
    Special Tool(s) : 307-578 Input Shaft Support Seal Installer (Back Plate, Multiple rings)
  1. Size all 4 Teflon® seals.
    Special Tool(s) : 307-578 Input Shaft Support Seal Installer (Back Plate, Multiple rings)
  1. Special Tool(s) : 307-588 Reverse clutch piston and retaining ring set
  1. Align the piston bleed hole with the indentation in the cover and push the piston in the cylinder using the Reverse Clutch Piston and Retaining Ring Set 307-588/3. Apply petroleum jelly.
    Special Tool(s) : 307-588 Reverse clutch piston and retaining ring set
  1. NOTE: Install the low/reverse piston return spring with the tabs facing down.

  1. NOTE: Make sure the snap ring is fully seated in the groove before releasing the pressure on the return spring.

    Special Tool(s) : 307-584 2-6 Spring Compressor , 307-588 Reverse clutch piston and retaining ring set
    General Equipment : Hydraulic Press
  1. Apply petroleum jelly.
  1. NOTE: Make sure the snap ring is fully seated in the groove before releasing the pressure on the return spring.

    Special Tool(s) : 307-584 2-6 Spring Compressor
  1. Special Tool(s) : 307-578 Input Shaft Support Seal Installer (Back Plate, Multiple rings)
  1. Apply petroleum jelly.
    Torque : 12 Nm
  1. Special Tool(s) : 100-001 (T50T-100-A) Slide Hammer , 303-D020 (D80L-100-R) Collet, 7/8 to 1
  1. NOTE: Note the location of the Torx® head and the hex head bolts for assembly.

  1. Clean and inspect the stator support assembly for damage and install new, if necessary.
  1. Special Tool(s) : 307-579 Support Solid seal installer (single seal)
  1. Special Tool(s) : 307-579 Support Solid seal installer (single seal)
  1. NOTE: Install the Torx® and the hex bolts in the correct locations as noted during disassembly.

    Hand tighten.
  1. Torque : 7 Nm
  1. Torque : 12 Nm
  1. Special Tool(s) : 307-585 Support seal installer
  1. Special Tool(s) : 307-585 Support seal installer
  1. Remove Special Service Tool : 307-579 Support Solid seal installer (single seal)
  1. NOTICE: The solenoid body should be handled with care or damage to the solenoid body may occur.

    NOTICE: Do not handle the solenoid body in the internal wiring harness frame area or by the screens of the solenoid body filter or damage to the solenoid body may occur.

    NOTICE: Use care not to break the alignment tabs when installing the solenoid body filter. Damage to the transmission will occur if the solenoid body is not correctly aligned.

    Pull straight up from the alignment tabs.
  1. If replacing the solenoid body, install the replacement service tag on the transmission case over the current solenoid body strategy tag.
  1. NOTICE: Do not handle the solenoid body in the internal wiring harness frame area or by the screens of the solenoid body filter or damage to the solenoid body may occur.

    NOTICE: Use care not to break the alignment tabs when installing the solenoid body filter. Damage to the transmission will occur if the solenoid body is not correctly aligned.

    NOTICE: Make sure that the filter passage areas are clean of foreign material before installing the filter. Damage to the transmission will occur if the filter passages are not clean.

    Push filter straight down onto the alignment tabs.
  1. Apply petroleum jelly.
    Special Tool(s) : 307-581 Manual Levcr seal installer
  1. Special Tool(s) : 307-581 Manual Levcr seal installer
  1. Material : Motorcraft® MERCON® LV Automatic Transmission Fluid / XT-10-QLVC (WSS-M2C938-A) (MERCON® LV )
  1. Torque : 12 Nm
  1. Special Tool(s) : 307-575 Converter Seal Installer
  1. NOTICE: Support the torque converter housing using blocks of wood, or damage to the torque converter housing may occur.

    Special Tool(s) : 307-575 Converter Seal Installer
    General Equipment : Wooden Block
  1. NOTE: FWD vehicles

    Special Tool(s) : 205-153 (T80T-4000-W) Handle , 307-582A Cover Axle Seal Installer
  1. NOTICE: Support the torque converter housing using blocks of wood, or damage to the torque converter housing may occur.

    Special Tool(s) : 205-153 (T80T-4000-W) Handle , 307-582A Cover Axle Seal Installer
    General Equipment : Wooden Block
  1. NOTE: The dot on the pump sprocket is installed facing upward.

  1. Flush the pump with clean transmission fluid. Rotate the pump shaft by hand to clean the old transmission fluid out of the pump.
    Material : Motorcraft® MERCON® LV Automatic Transmission Fluid / XT-10-QLVC (WSS-M2C938-A) (MERCON® LV )
  1. Material : Motorcraft® MERCON® LV Automatic Transmission Fluid / XT-10-QLVC (WSS-M2C938-A) (MERCON® LV )
  1. NOTE: Install the filter in the correct orientation as noted in removal.

  1. Torque : 12 Nm
  1. NOTE: Be sure that the pump drive chain is correctly engaged on both sprockets.

    Tighten in the sequence shown.
    Torque : 41 Nm
  1. Torque : 12 Nm
  1. Apply petroleum jelly.
  1. Material : Ultra Silicone Sealant / TA-29
  1. NOTE: Hand tighten the bolts only.

  1. NOTE: The studbolts are 1 and 16 in the tightening sequence.

    Torque : 24 Nm
  1. Special Tool(s) : 205-153 (T80T-4000-W) Handle , 307-582A Cover Axle Seal Installer
  1. Special Tool(s) : 205-153 (T80T-4000-W) Handle , 307-582A Cover Axle Seal Installer
  1. Apply petroleum jelly.
  1. NOTE: Install the Compressor, Forward/Intermediate Spring 307-584/1 with the stepped end of the cylinder facing downward when pushing the forward clutch piston into the bore.

    Special Tool(s) : 307-584 2-6 Spring Compressor
  1. NOTE: Install the Compressor, Forward/Intermediate Spring with the stepped end of the cylinder facing upward when compressing the forward clutch piston return spring.

  1. NOTE: Install the Forward/Overdrive Spring Compressor with the stepped end of the cylinder facing upward when compressing the forward clutch piston return spring.

    NOTE: Before compressing the forward clutch piston return spring, make sure the spring is centered.

    Special Tool(s) : 307-574 Forward Clutch Spring Compressor , 307-584 2-6 Spring Compressor
  1. NOTE: The Compressor, Forward Clutch Spring and the Compressor, Forward/Intermediate Spring not shown for clarity.

    NOTE: The snap ring gap should be at the top of the transmission case.

  1. Install the forward clutch wave spring.
  1. Soak the clutch plates.
    Material : Motorcraft® MERCON® LV Automatic Transmission Fluid / XT-10-QLVC (WSS-M2C938-A) (MERCON® LV )
    1. Position the forward clutch pack assembly in the case.
    1. Make sure the alignment tab on the clutch pack is positioned in the correct location.
  1. NOTE: The low One-Way Clutch (OWC) snap ring gap must be positioned as shown so that the low/reverse clutch pressure plate tab fits into the gap when it is installed later in this procedure.

  1. Compare the position of the low One-Way Clutch (OWC) snap ring gap with the tab on the low/reverse clutch pressure plate to be sure that the gap is in the right position.
  1. Rest the plunger on a top friction disc tab.
    Special Tool(s) : 100-002 (TOOL-4201-C) Holding Fixture with Dial Indicator Gauge
  1. Apply 483 kPa (70 psi) of air pressure to the forward clutch piston port while recording the clutch pack clearance on the Dial Indicator. The clearance should be between 0.85 mm (0.033 in) and 2.41 mm (0.094 in). If the clearance is out of range, check the forward clutch pack and low One-Way Clutch (OWC) for correct installation. If the forward clutch pack and low One-Way Clutch (OWC) is correctly installed, install a new forward clutch pack.
    Special Tool(s) : 100-002 (TOOL-4201-C) Holding Fixture with Dial Indicator Gauge
  1. NOTE: The groove on the center sun gear is installed facing up.

  1. NOTICE: Failure to align the tab on the bottom of the low/reverse pressure plate with the gap in the low One-Way Clutch (OWC) snap ring may result in damage to the transmission.

    1. Make sure the tab on the bottom of the pressure plate fits in the gap of the low One-Way Clutch (OWC) snap ring.
    1. Install the low/reverse clutch pressure plate.
  1. Measure the depth of the low/reverse clutch pressure plate where the tab fits into the gap of the low One-Way Clutch (OWC) snap ring and directly across from it. If the pressure plate is seated correctly, the depth should be the same. If the depths are different, rotate the snap ring so that the gap fits around the tab on the pressure plate.
  1. Soak the clutch plates.
    Material : Motorcraft® MERCON® LV Automatic Transmission Fluid / XT-10-QLVC (WSS-M2C938-A) (MERCON® LV )
  1. Install the low/reverse clutch.
  1. NOTE: The low/reverse clutch wave spring and pressure plate are temporarily reversely installed to measure the low/reverse clutch clearance.

    NOTE: Temporarily install the low/reverse clutch wave spring and pressure plate with the pressure plate on top of the wave spring.

    1. Pressure plate
    1. Wave spring
  1. Using a straightedge and the Depth Micrometer 303-D075 (D92P-4201-A), measure and record as measurement A, the distance from the transmission case deck surface to the low/reverse pressure plate.
    Special Tool(s) : 303-D075 Depth Micrometer
  1. Using the same straightedge and the Depth Micrometer 303-D075 (D92P-4201-A), measure and record as measurement B, the distance from the low/reverse clutch piston to the cover assembly deck surface.
    Special Tool(s) : 303-D075 Depth Micrometer
  1. Subtract measurement B from measurement A and add 1.6 mm (0.062 in), to compensate for the thickness of the gasket, to get the low/reverse clutch clearance. The clearance should be between 0.83 mm (0.032 in) and 2.43 mm (0.095 in). If the clearance is out of range, check the low/reverse clutch pack for correct installation. If the low/reverse clutch pack is correctly installed, install a new low/reverse clutch pack.
  1. NOTE: When the low/reverse clutch is correctly installed, the wave spring is on top.

    1. Wave spring
    1. Pressure plate
  1. Install the intermediate clutch pressure plate.
  1. Soak the clutch plates.
    Material : Motorcraft® MERCON® LV Automatic Transmission Fluid / XT-10-QLVC (WSS-M2C938-A) (MERCON® LV )
  1. Using a straightedge and the Depth Micrometer 303-D075 (D92P-4201-A), measure and record as measurement A, the distance from the transmission case deck surface to a low point on the intermediate clutch wave spring.
    Special Tool(s) : 303-D075 Depth Micrometer
  1. Using the straightedge and the Depth Micrometer 303-D075 (D92P-4201-A), measure and record as measurement B, the distance from the intermediate clutch piston to the cover assembly deck surface.
    Special Tool(s) : 303-D075 Depth Micrometer
  1. Subtract measurement B from measurement A and add 1.6 mm (0.062 in), to compensate for the thickness of the gasket, to get the intermediate clutch clearance. The clearance should be between 0.99 mm (0.038 in) and 2.56 mm (0.1 in). If the clearance is out of range, check the intermediate clutch pack for correct installation. If the intermediate clutch pack is correctly installed, install a new intermediate clutch pack.
  1. Using petroleum jelly, install the No. 1 thrust bearing on the overdrive/direct clutch assembly.
  1. Position the overdrive/direct clutch assembly in the cover assembly, install the Dial Indicator Gauge with Holding Fixture 100-002 (TOOL-4201-C) plunger on the overdrive clutch pressure plate. Apply 483 kPa (70 psi) of air pressure to the overdrive clutch piston port while recording the clutch pack clearance on the Dial Indicator. The clearance should be between 1.13 mm (0.044 in) and 2.28 mm (0.089 in). If the clearance is out of range, check the overdrive clutch pack for correct installation. If the overdrive clutch pack is correctly installed, install a new overdrive clutch pack.
  1. Position the Dial Indicator Gauge with Holding Fixture 100-002 (TOOL-4201-C) on the direct clutch pressure plate. Apply 483 kPa (70 psi) of air pressure to the direct clutch piston port while recording the clutch pack clearance on the Dial Indicator. The clearance should be between 0.98 mm (0.038 in) and 2.34 mm (0.092 in). If the clearance is out of range, check the direct clutch pack for correct installation. If the direct clutch pack is correctly installed, install a new direct clutch pack.
  1. Torque : 12 Nm
  1. Torque : 12 Nm
  1. NOTICE: Be careful not to pinch the TSS , OSS or TR sensor wiring harnesses under the valve body, or damage to the wiring harness or connectors may occur.

    NOTE: Make sure that the manual pin (part of the TR sensor) is correctly installed in the manual valve.

    1. Manual pin
    1. Manual valve
  1. Torque : 12 Nm
  1. NOTICE: Make sure not to pinch the TSS , OSS or TR sensor wiring harnesses behind the solenoid body when positioning the solenoid body in place.

    NOTE: Hand-tighten only.

    1. Bolt
      Distance : 1.65  in ( 42  mm)
    1. Bolt
      Distance : 2.48  in ( 63  mm)
    1. Bolt
      Distance : 3.15  in ( 80  mm)
    1. Bolt
      Distance : 3.74  in ( 95  mm)
  1. Torque : 12 Nm
  1. NOTE: Install the studbolts in the correct locations as noted during disassembly.

  1. Torque : 12 Nm
  1. NOTICE: Only thread the bolts 6 to 8 turns or do not exceed 12 mm (0.472 in) in the torque converter. If the bolts are threaded too far, damage to the torque converter clutch surface can occur, causing torque converter failure.

    Install two 10 mm x 1.50 bolts into the torque converter 6 to 8 turns to assist in handling the torque converter and install the torque converter in the transmission.
  1. Special Tool(s) : 307-346 (T97T-7902-A) Retainer, Torque Converter