This procedure covers removal and replacement of the transmission input shaft bearing, requiring transmission removal from the vehicle and partial disassembly of the transmission case.

Warnings

Tools required

Parts

• Transmission input shaft bearing × 1 — Use OEM specification
• Transmission pan gasket × 1 — Use OEM specification
• Transmission filter × 1 — Use OEM specification
• Transmission case gasket/sealant × 1 — Motorcraft RTV or OEM equivalent
• Driveshaft bolts (if equipped) × 8 — Use OEM specification
• Transmission drain plug crush washer × 1 — Use OEM specification

Fluids

• Motorcraft MERCON LV ATF — 11 qt

Preparation

1. Disconnect negative battery cable and secure away from terminal
2. Raise vehicle on lift or use jack stands rated for vehicle weight at all four corners
3. Remove skid plates and underbody shields to access transmission
4. Place drain pan under transmission and drain fluid via drain plug
5. Install engine support bar across engine bay or attach engine hoist to support engine weight
6. Remove exhaust system from manifolds back to clear transmission removal (4WD configuration requires complete exhaust removal)
7. Photograph or mark all electrical connector and hose routing for reference during reassembly

Procedure

1. 1

   Remove transmission pan and filter
   Remove remaining transmission pan bolts in criss-cross pattern and lower pan. Remove transmission filter by pulling straight down from valve body. Clean pan thoroughly and inspect for metal debris indicating additional internal damage.
   Torque spec

   Pan Bolts20 Nm (15 lb-ft)
2. 2

   Disconnect driveshafts and transfer case
   Mark front and rear driveshaft positions for reinstallation. Remove driveshaft mounting bolts and secure shafts out of the way. Disconnect transfer case shift linkage, electrical connectors, and vent hose. Support transfer case with jack and remove mounting bolts, then lower transfer case from vehicle.
   Torque spec

   Mounting Bolts34 Nm (25 lb-ft)
3. 3

   Disconnect transmission components
   Disconnect transmission cooler lines at transmission (use line wrench to prevent rounding). Disconnect shift cable from manual lever and bracket. Disconnect all electrical connectors including range selector, solenoid body connector, and turbine speed sensor. Remove starter motor to access flywheel bolts.
4. 4

   Remove torque converter bolts
   Rotate crankshaft to access each torque converter-to-flywheel bolt through starter opening. Remove all torque converter bolts and push converter back into transmission bellhousing to prevent it from coming out with transmission.
   ⚠Mark torque converter position on flywheel before removal to maintain balance during reassembly.
   Torque spec

   Flywheel Bolts95 Nm (70 lb-ft)
5. 5

   Remove transmission crossmember and lower transmission
   Support transmission securely with transmission jack. Remove transmission crossmember mounting bolts and remove crossmember. Remove all bellhousing-to-engine block bolts. Verify all connections are disconnected, then carefully pull transmission straight back to disengage input shaft from torque converter. Lower transmission from vehicle.
   ⚠️Ensure torque converter is secured to transmission with converter holding tool or strap. Converter can fall out during removal causing injury.
   Torque spec

   Mounting Bolts34 Nm (25 lb-ft)
6. 6

   Remove valve body and internal components
   Place transmission on secure workbench. Remove valve body bolts and carefully lower valve body assembly, keeping track of check balls and separator plate. Remove solenoid body connector and any remaining internal wiring. Remove pump bolts and carefully extract pump assembly from case.
   ℹ️Take detailed photos of valve body and separator plate orientation. Improper reassembly will cause shift problems.
   Torque spec

   Cover Screws14 Nm (10 lb-ft)
7. 7

   Access input shaft bearing
   With pump removed, the input shaft and bearing are now accessible. Remove snap ring retaining input shaft if equipped. Use dial indicator to measure input shaft endplay and bearing condition. Document measurements for comparison after bearing replacement.
8. 8

   Remove old input shaft bearing
   Using appropriate bearing puller, carefully extract input shaft bearing from transmission case bore. Inspect case bearing bore for scoring, cracks, or damage. Clean bore thoroughly with solvent and compressed air. Measure bore diameter to verify it is within specification.
   ⚠Do not damage case bore during bearing removal. Any scoring will require case replacement.
9. 9

   Install new input shaft bearing
   Verify new bearing matches original part number and dimensions. Lightly lubricate bearing outer race with ATF. Using bearing driver that contacts outer race only, drive bearing squarely into case bore to proper depth. Bearing should be flush with case surface or at OEM specified depth. Install snap ring if equipped and verify proper seating.
   ⚠Drive bearing straight and evenly. Cocked bearing will bind input shaft and cause immediate transmission failure.
10. 10

    Verify bearing installation and endplay
    Install input shaft and measure endplay with dial indicator. Endplay should match OEM specifications (typically 0.010-0.035 inches). Rotate input shaft to verify smooth operation with no binding. If endplay is incorrect, verify bearing depth and snap ring installation.
11. 11

    Reinstall pump assembly
    Install new pump gasket or apply thin bead of RTV sealant to pump mating surface. Carefully install pump assembly, ensuring input shaft engages properly with pump gears. Install pump bolts and tighten to specification in criss-cross pattern.
    Torque spec

    Cover Screws14 Nm (10 lb-ft)
12. 12

    Reinstall valve body and internal components
    Position separator plate with all check balls in correct locations per documentation. Install solenoid body connector and internal wiring. Carefully raise valve body into position, ensuring manual valve engages with detent lever. Install all valve body bolts and tighten to specification.
    Torque spec

    Cover Screws14 Nm (10 lb-ft)

    Sensor Bolts14 Nm (10 lb-ft)
13. 13

    Install transmission pan and filter
    Install new transmission filter onto valve body. Clean pan mating surface and install new gasket. Position pan and install bolts hand-tight, then torque in criss-cross pattern to specification. Install drain plug with new crush washer.
    Torque spec

    Pan Bolts20 Nm (15 lb-ft)

    Transmission Drain Plug30 Nm (22 lb-ft)
14. 14

    Reinstall transmission into vehicle
    Raise transmission into position using transmission jack. Ensure torque converter is fully seated in pump (should have two clicks when pushed in). Align transmission to engine and slide forward, ensuring dowel pins engage properly. Install bellhousing bolts and torque to specification. Install transmission crossmember and mounting bolts.
    ⚠Measure torque converter seating depth before final installation. Converter must be fully seated or pump damage will occur on startup.
    Torque spec

    Mounting Bolts34 Nm (25 lb-ft)
15. 15

    Reconnect all components and fill transmission
    Install torque converter to flywheel bolts in star pattern to specification. Reconnect all electrical connectors, shift cable, and transmission cooler lines. Install transfer case with new gasket and torque mounting bolts. Reinstall driveshafts in original positions. Fill transmission with MERCON LV ATF to proper level (approximately 11 quarts total, verify with dipstick).
    ℹ️Transmission will require additional fluid after initial start and circulation. Check level with engine running in Park after reaching operating temperature.
    Torque spec

    Flywheel Bolts95 Nm (70 lb-ft)

    Mounting Bolts34 Nm (25 lb-ft)

Reassembly

1. Reinstall exhaust system with new gaskets and torque all fasteners to specification
2. Reinstall skid plates and underbody shields
3. Lower vehicle and reconnect negative battery cable
4. Perform transmission relearn procedure using scan tool if required for this model year

Verification

• Start engine and verify no fluid leaks from transmission pan, cooler lines, or case
• With engine at idle and parking brake applied, shift through all gear ranges and verify smooth engagement
• Check transmission fluid level with engine at operating temperature and add fluid as needed to bring to full mark
• Road test vehicle through all gears and verify proper shift quality and timing
• Recheck fluid level after road test and inspect for leaks
• Monitor transmission operation for first 100 miles and recheck fluid level after initial break-in period

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