TECHNICAL SERVICE BULLETIN
Harsh/Delayed Engagement And/Or Harsh/Delayed Shift

25-2126
31 March 2025

This bulletin supersedes 25-2018. Reason for update: update the Part List and Service Procedure
Model:
Ford
2017-2020 F-150

Transmission/Transaxle: 10R80

2018-2020 Mustang

Transmission/Transaxle: 10R80

Markets: North American markets only
Issue: Some of the vehicles listed in the Model statement above may exhibit at least one of the following conditions:
• Harsh engagement
• Delayed engagement
• Harsh shift
• Delayed shift
• Illuminated MIL with DTCs P0751, P0752, P0756, P0757, P0761, P0762, P0766, P0767, P0771, P0772, P2700, P2701, P2702, P2703, P2704, P2705, P2707,
P2708, P0729, P0731, P0732, P0733, P0734, P0735, P0736, P076F, P07D9, P07F6 and/or P07F7 stored in the PCM or TCM.
This may be due to axial movement of the CDF clutch cylinder sleeve causing hydraulic circuit leaks.
NOTE: If internal transmission service is required to address a concern detected with the CDF clutch cylinder following this article, technicians should carefully
inspect and replace other transmission components and flush transmission fluid cooler only as necessary as needed to ensure proper function. Add a new line to
the repair order to document any additional repairs needed. M-time can be claimed on the additional repair line to cover labor. Refer to Warranty and Policy Manual
for additional information. A thorough understanding of transmission description and operation will assist the technician with proper diagnosis, inspection, and
successful repair of the customer concern.
NOTE: The Pressure Vacuum Transducer (PVT) Kit (Rotunda 164-R9833) and VCMM Transmission Extension Kit (Rotunda 164-R9534) recommended to perform this
article are no longer included with the VCMM Advanced Kit (Rotunda 164-R9823) since July 2023. Supply of the PVT Kit (Rotunda 164-R9833) and VCMM
Transmission Extension Kit (Rotunda 164-R9534) have been sold out. Ford has confirmed a high percentage (80%) of Dealers have this equipment available.
Alternatively, Ford has tested suitable transmission fluid pressure gauges and developed procedures which reliably enable the capability to perform this article.
Refer to Table 1 in the Service Procedure. In addition, VCMM Universal Probe Tip Adapter (Rotunda 164-R9834, or equivalent) is needed to perform this article. The
Probe Tip Adapters are included in VCMM Advanced Kit (Rotunda 164-R9823).
Action: For vehicles that meet all of the criteria in the Issue and Model statements, follow the Service Procedure to verify hydraulic circuit leakage and if instructed replace the
CDF clutch cylinder and the clutch and planetary container cylinder.
Parts - CDF Cylinder Replacement
Service Part Number Claim Quantity Package Order Quantity Number in Package Description
HL3Z-7A248-A

1

1

1

Torque Converter Seal

JL3Z-7N134-A

12

12

1

Front Support Bolts

HL3Z-7A248-G

1

1

1

Front Support To Case Seal

HL3Z-7G091-F

5

5

1

Input Shaft Seals (F2)

HL3Z-7B399-C

4

4

1

Sun Gear No. 3 Shaft Seals (F7)

HL3Z-7C099-A

1

1

1

C Clutch Balance Dam Inner Seal

HL3Z-7A548-B

2

2

1

C Clutch Balance Dam And Piston Outer Seal

HL3Z-7D404-A

2

2

1

C Clutch Piston Inner Seal

HL3Z-7A262-C

1

1

1

D Clutch Balance Dam

HL3Z-7D403-A

1

1

1

D Clutch Piston Outer Seal

HL3Z-7A548-G

2

2

1

F Clutch Balance Dam And Piston Outer Seal

HL3Z-7A548-A

2

2

1

F Clutch Balance Dam And Piston Inner Seal

HL3Z-7G091-G

5

5

1

Input Shaft To Sun Gear No. 3 Shaft Seals (F8)

HL3Z-7G091-C

1

1

1

Input Shaft Seal (F9)

JL3Z-7H351-B

1

1

1

CDF Cylinder (5.0L Mustang, all F-150)

JR3Z-7H351-B

1

1

1

CDF Cylinder (2.3LMustang)

PC3Z-7B177-A

1

1

1

Clutch And Planetary Container Cylinder

Parts - CDF Cylinder Replacement - Parts To Inspect And Replace Only If Necessary
Service Part
Number

Claim Quantity

Package Order Quantity

Number in
Package

Description

HL3Z-7A191-B

Only If Necessary (1 Possible)

Only If Necessary (1 Possible)

1

Fluid Pan Gasket

HL3Z-7A098-A

Only If Necessary (1 Possible)

Only If Necessary (1 Possible)

1

Fluid Filter

7T4Z-7Z302-A

Only If Necessary (1 Possible)

Only If Necessary (1 Possible)

1

Transmission Fluid Filter Seal

HL3Z-7J227-A

Only If Necessary (1 Possible)

Only If Necessary (1 Possible)

1

Auxiliary Pump Tube O-ring (If
Equipped)

HL3Z-7B066-AB

Only If Necessary (1 Possible)

Only If Necessary (1 Possible)

1

A Pressure Plate

HL3Z-7B164-E

Only If Necessary (3 Possible)

Only If Necessary (3 Possible)

1

A Clutch Friction Plates

HL3Z-7F220-A

Only If Necessary (2 Possible)

Only If Necessary (2 Possible)

1

A Clutch Steel Plates

HL3Z-7B442-F

Only If Necessary (2.3L Mustang Has 4 Possible, All Only If Necessary (2.3L Mustang Has 4 Possible, All
Others Have 5 Possible)
Others Have 5 Possible)

1

HL3Z-7B164-A

Only If Necessary (2.3L Mustang Has 4 Possible, All Only If Necessary (2.3L Mustang Has 4 Possible, All
Others Have 5 Possible)
Others Have 5 Possible)

1

C Clutch Steel Plates
C Clutch Friction Plates

ML3Z-7B477-A

Only If Necessary (1 Possible)

Only If Necessary (1 Possible)

1

HL3Z-7B442-D

Only If Necessary (2.3L Mustang Has 5 Possible, All Only If Necessary (2.3L Mustang Has 5 Possible, All
Others Have 6 Possible)
Others Have 6 Possible)

1

HL3Z-7B164-C

Only If Necessary (2.3L Mustang Has 5 Possible, All Only If Necessary (2.3L Mustang Has 5 Possible, All
Others Have 6 Possible)
Others Have 6 Possible)

1

HL3Z-7B066-E

Only If Necessary (1 Possible)

Only If Necessary (1 Possible)

1

HL3Z-7B164-G

Only If Necessary (2.3L Mustang Has 3 Possible, All Only If Necessary (2.3L Mustang Has 3 Possible, All
Others Have 4 Possible)
Others Have 4 Possible)

1

HL3Z-7B164-D

Only If Necessary (2.3L Mustang Has 3 Possible, All Only If Necessary (2.3L Mustang Has 3 Possible, All
Others Have 4 Possible)
Others Have 4 Possible)

1

HL3Z-7B066-A

Only If Necessary (1 Possible)

Only If Necessary (1 Possible)

1

C Clutch Pressure Plate
D Clutch Steel Plates
D Clutch Friction Plates
D Clutch Pressure Plate
F Clutch Steel Plates
F Clutch Friction Plates
F Clutch Pressure Plate

Parts - All Vehicles - CDF Cylinder Replacement - Select One Of The Following If Needed
Service Part Number Claim Quantity

Package Order Quantity Number in Package Description

HL3Z-7B066-AA

Only If Necessary

Only If Necessary

1

A Clutch Apply Plate 4.1 - 4.3 mm Selective

HL3Z-7B066-Z

Only If Necessary

Only If Necessary

1

A Clutch Apply Plate 4.4 - 4.6 mm Selective

HL3Z-7B066-Y

Only If Necessary

Only If Necessary

1

A Clutch Apply Plate 4.7 - 4.9 mm Selective

HL3Z-7B066-X

Only If Necessary

Only If Necessary

1

A Clutch Apply Plate 5.0 - 5.2 mm Selective

HL3Z-7B066-W

Only If Necessary

Only If Necessary

1

A Clutch Apply Plate 5.3 - 5.5 mm Selective

HL3Z-7H032-C

Only If Necessary

Only If Necessary

1

T-3 Bearing (Replace If T-3 Shim Is Replaced)

HL3Z-7A527-Q

Only If Necessary

Only If Necessary

1

T-3 Shim 3.05-3.15 mm Selective

HL3Z-7A527-P

Only If Necessary

Only If Necessary

1

T-3 Shim 3.2-3.3 mm Selective

HL3Z-7A527-R

Only If Necessary

Only If Necessary

1

T-3 Shim 3.35-3.45 mm Selective

HL3Z-7A527-K

Only If Necessary

Only If Necessary

1

T-3 Shim 3.5-3.6 mm Selective

HL3Z-7A527-L

Only If Necessary

Only If Necessary

1

T-3 Shim 3.65-3.75 mm Selective

HL3Z-7A527-M

Only If Necessary

Only If Necessary

1

T-3 Shim 3.8-3.9 mm Selective

HL3Z-7A527-S

Only If Necessary

Only If Necessary

1

T-3 Shim 3.95-4.05 mm Selective

HL3Z-7A527-T

Only If Necessary

Only If Necessary

1

T-3 Shim 4.1-4.2 mm Selective

HL3Z-7A527-N

Only If Necessary

Only If Necessary

1

T-3 Shim 4.25-4.35 mm Selective

HL3Z-7D483-A

Only If Necessary

Only If Necessary

1

D Clutch Snap Ring 1.8 mm Selective

HL3Z-7D483-B

Only If Necessary

Only If Necessary

1

D Clutch Snap Ring 2.0 mm Selective

HL3Z-7D483-C

Only If Necessary