This procedure covers the replacement of the transmission input shaft bearing on a 2015-2020 Ford F-150 with 5.0L V8 and RWD configuration, requiring full transmission removal.

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 drain plug crush washer × 1 — Use OEM specification
• Rear main seal (inspect and replace if needed) × 1 — Use OEM specification

Fluids

• Motorcraft MERCON LV ATF — 11 qt

Preparation

1. Park vehicle on level surface and engage parking brake
2. Disconnect negative battery cable and secure away from terminal
3. Raise vehicle on lift or support securely on jack stands at frame points
4. Remove transmission skid plate if equipped
5. Allow transmission to cool to ambient temperature if recently operated
6. Mark driveshaft-to-axle flange orientation with paint pen for proper reinstallation
7. Place drain pan under transmission

Procedure

1. 1

   Drain transmission fluid
   Remove transmission drain plug and allow fluid to drain completely into appropriate container. Remove transmission pan bolts in criss-cross pattern and lower pan carefully to drain remaining fluid. Remove and discard old filter and gasket.
   Torque spec

   Drain Plug42 Nm (31 lb-ft)

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

   Disconnect driveshaft
   Remove four driveshaft flange bolts at rear differential. Support driveshaft and slide it rearward to disengage from transmission output shaft. Cap transmission extension housing to prevent fluid leakage and contamination.
3. 3

   Disconnect transmission electrical connections and cooler lines
   Disconnect transmission wiring harness connectors including speed sensors, solenoid body connector, and range sensor. Disconnect transmission cooler lines at transmission using proper line disconnect tools. Cap all open fittings to prevent contamination.
   ⚠Residual fluid will drain from cooler lines. Have rags and drain pan ready.
4. 4

   Support engine and transmission
   Install engine support bar across engine compartment or attach chain hoist to engine lifting points. Position transmission jack under transmission pan and secure transmission to jack with safety chain or strap. Raise jack slightly to take weight off crossmember.
5. 5

   Remove transmission crossmember
   Remove transmission mount-to-crossmember fasteners. Remove crossmember-to-frame bolts and lower crossmember from vehicle. Keep all hardware organized for reinstallation.
6. 6

   Remove starter and access cover
   Remove starter motor bolts and set aside with wiring attached. Remove torque converter access cover or dust shield bolts to expose torque converter bolts.
   Torque spec

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

   Mark and remove torque converter bolts
   Mark torque converter to flexplate orientation. Rotate crankshaft using breaker bar on harmonic balancer bolt to access each torque converter bolt through access opening. Remove all torque converter-to-flexplate bolts and push converter back into transmission bellhousing.
   ⚠Ensure torque converter is fully pushed into transmission and will not fall out during removal.
8. 8

   Remove transmission mounting bolts
   Remove all transmission bellhousing-to-engine mounting bolts, noting different bolt lengths and locations. Support transmission securely on jack and ensure engine support is adequate.
   Torque spec

   Mounting Bolts76 Nm (56 lb-ft)
9. 9

   Separate and lower transmission
   Carefully slide transmission rearward on jack, ensuring torque converter remains fully seated in transmission. Once input shaft clears bellhousing, slightly tilt transmission nose down and lower from vehicle. Move to clean workbench.
   ⚠️Transmission is extremely heavy and awkward. Use extreme caution when lowering. Have assistant help guide transmission if possible.
10. 10

    Disassemble transmission front components
    With transmission on bench, remove torque converter. Remove pump bolts and carefully extract pump assembly from transmission case. Input shaft and bearing are located in the pump body. Clean all components with brake cleaner and inspect for damage.
11. 11

    Remove old input shaft bearing
    Using appropriate bearing puller or press, carefully remove old input shaft bearing from pump body. Note bearing orientation and depth in bore. Inspect input shaft for wear, scoring, or damage. Clean bearing bore thoroughly with brake cleaner.
    ⚠Do not damage bearing bore surface or input shaft during bearing removal. Burrs or scratches will cause premature bearing failure.
12. 12

    Install new input shaft bearing
    Using proper bearing installation tool and press or driver, install new bearing to correct depth in pump body. Bearing must be seated squarely and fully. Install bearing with correct orientation (typically numbered or marked side out). After installation, measure input shaft endplay using dial indicator. Endplay should be within manufacturer specification (typically 0.010-0.030 inches). Adjust with selective shims if necessary.
    ⚠Incorrect bearing depth or endplay will cause transmission failure. Verify measurements before proceeding.
13. 13

    Reassemble transmission pump
    Install new pump seal if needed. Lubricate input shaft and bearing with fresh MERCON LV ATF. Install pump assembly back into transmission case with new gasket or O-ring. Torque pump bolts to specification in criss-cross pattern. Verify smooth rotation of input shaft.
14. 14

    Install transmission to engine
    Secure transmission to jack and raise into position. Ensure torque converter is fully seated in transmission (should have approximately 1/2 inch gap between converter and flexplate). Slide transmission forward, carefully aligning input shaft with torque converter hub and pilot bearing. Install all bellhousing mounting bolts and torque to specification.
    ⚠Verify torque converter is fully engaged before tightening bellhousing bolts. Converter should rotate freely by hand.
    Torque spec

    Mounting Bolts76 Nm (56 lb-ft)
15. 15

    Install torque converter and complete reassembly
    Align marks on torque converter and flexplate. Install and torque converter bolts in star pattern. Reinstall access cover, starter motor, crossmember, driveshaft (aligned to original marks), cooler lines, and all electrical connections. Install new transmission filter and pan with new gasket. Torque pan bolts in criss-cross pattern. Install drain plug with new crush washer. Fill transmission with 11 quarts MERCON LV through dipstick tube or fill plug. Reconnect battery.
    Torque spec

    Flywheel Bolts95 Nm (70 lb-ft)

    Cover Screws14 Nm (10 lb-ft)

    Pan Bolts20 Nm (15 lb-ft)

    Drain Plug42 Nm (31 lb-ft)

Reassembly

1. Ensure all electrical connectors are fully seated with locking tabs engaged
2. Verify driveshaft is installed with alignment marks matched to prevent vibration
3. Double-check all torque specifications have been met
4. Verify transmission fluid level is correct before starting engine

Verification

• Start engine and allow to reach operating temperature while monitoring for leaks at all connections
• Check transmission fluid level with engine running in Park on level surface, add if necessary to reach proper level on dipstick
• Test drive vehicle through all gear ranges, verifying smooth shifts with no noise, vibration, or slipping
• Recheck fluid level after test drive and top off if needed
• Inspect underneath vehicle for any fluid leaks at pan, cooler lines, drain plug, and pump seal areas
• Verify no abnormal noises from transmission during operation

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