3

1

4

Driveshaft To Transmission Flange Bolts (If Equipped) (2.3L
Mustang)

N800594-S101

4

1

4

Driveshaft To Transmission Flange Bolts (If Equipped) (5.0L
Mustang)

W500545-S439

3

1

4

Driveshaft To Transmission Flange Bolts

W717822-S439

2

1

4

Driveshaft Center Bearing Bolts (If Equipped)

TA-25-B

As Needed

As Needed

Motorcraft® Threadlock and Sealer (Convertible)

XL-1

As Needed

As Needed

Motorcraft® Penetrating and Lock Lubricant

XL-2

As Needed

As Needed

Motorcraft® High Temperature Nickel Anti-Seize Lubricant

XL-5-A

As Needed

As Needed

Motorcraft® Multi-Purpose Grease Spray

XT-12-QULV

As Needed

As Needed

Motorcraft® MERCON® ULV Automatic Transmission Fluid

Parts - Mustang Transmission Removal And Installation - Parts To Inspect And Replace Only If Necessary
Service Part Number Claim Quantity

Package Order Quantity

Number in Package Description

5L7Z-7D285-A

Only If Necessary (2 Possible) Only If Necessary (1 Possible)

2

Transmission Fluid Cooler Tube Seals

5L7Z-7J324-A

Only If Necessary (2 Possible) Only If Necessary (1 Possible)

2

Transmission Fluid Cooler Tube Backing Rings

JR3Z-4782-B

Only If Necessary (1 Possible) Only If Necessary (1 Possible)

1

Flex Coupling Driveshaft

Service part numbers and "number in package" quantity may change after publication, thus also affecting the "package order quantity". Refer to the parts catalog for the latest
information.
Claim Quantity refers to the total number of individual pieces required to repair the vehicle.
Package Order Quantity refers to the amount of the service part number package(s) required to repair the vehicle.
Number In Package refers to the number of individual pieces included in a service part number package.
As Needed indicates the part is necessary but amount of the part may vary and/or is not a whole number. Parts can be billed out as non-whole numbers, including less than 1.
Only If Necessary indicates the part is not mandatory. Refer to the Service Procedure to determine the inspection/inclusion criteria.
Labor Times
Description

Operation
No.

Time

2017-2020 F-150 4X2/4X4: Follow The Service Procedure To Verify Hydraulic Circuit Leakage (Pass) (Do Not Use With Any Other Labor Operations)

252126A

1.0 Hrs.

2017-2020 F-150 4X2 2.7L: Follow The Service Procedure To Verify Hydraulic Circuit Leakage (Fail) Replace The CDF Clutch Cylinder (Do Not Use
With Any Other Labor Operations)

252126B

11.9
Hrs.

2017-2020 F-150 4X2 3.5L: Follow The Service Procedure To Verify Hydraulic Circuit Leakage (Fail) Replace The CDF Clutch Cylinder (Do Not Use
With Any Other Labor Operations)

252126C

11.8
Hrs.

2017-2020 F-150 4X2 5.0L: Follow The Service Procedure To Verify Hydraulic Circuit Leakage (Fail) Replace The CDF Clutch Cylinder (Do Not Use
With Any Other Labor Operations)

252126D

11.7
Hrs.

2018-2020 F-150 4X2 3.0L Diesel: Follow The Service Procedure To Verify Hydraulic Circuit Leakage (Fail) Replace The CDF Clutch Cylinder (Do
Not Use With Any Other Labor Operations)

252126E

10.5
Hrs.

2017-2020 F-150 4X4 2.7L: Follow The Service Procedure To Verify Hydraulic Circuit Leakage (Fail) Replace The CDF Clutch Cylinder (Do Not Use
With Any Other Labor Operations)

252126F

13.2
Hrs.

2017-2020 F-150 4X4 3.5L: Follow The Service Procedure To Verify Hydraulic Circuit Leakage (Fail) Replace The CDF Clutch Cylinder (Do Not Use
With Any Other Labor Operations)

252126G

13.1
Hrs.

2017-2020 F-150 4X4 Raptor: Follow The Service Procedure To Verify Hydraulic Circuit Leakage (Fail) Replace The CDF Clutch Cylinder (Do Not
Use With Any Other Labor Operations)

252126H

12.9
Hrs.

2017-2020 F-150 4X4 5.0L: Follow The Service Procedure To Verify Hydraulic Circuit Leakage (Fail) Replace The CDF Clutch Cylinder (Do Not Use
With Any Other Labor Operations)

252126J

13.0
Hrs.

2018-2020 F-150 4X4 3.0L Diesel: Follow The Service Procedure To Verify Hydraulic Circuit Leakage (Fail) Replace The CDF Clutch Cylinder (Do
Not Use With Any Other Labor Operations)

252126K

11.5
Hrs.

2018-2020 Mustang: Follow The Service Procedure To Verify Hydraulic Circuit Leakage (Pass) (Do Not Use With Any Other Labor Operations)

252126L

0.8 Hrs.

2018-2020 Mustang 2.3L Coupe: Follow The Service Procedure To Verify Hydraulic Circuit Leakage (Fail) Replace The CDF Clutch Cylinder (Do Not
Use With Any Other Labor Operations)

252126M

10.8
Hrs.

2018-2020 Mustang 2.3L Convertible: Follow The Service Procedure To Verify Hydraulic Circuit Leakage (Fail) Replace The CDF Clutch Cylinder (Do
Not Use With Any Other Labor Operations)

252126N

11.2
Hrs.

2018-2020 Mustang 5.0L Coupe: Follow The Service Procedure To Verify Hydraulic Circuit Leakage (Fail) Replace The CDF Clutch Cylinder (Do Not
Use With Any Other Labor Operations)

252126P

11.7
Hrs.

2018-2020 Mustang: 5.0L Convertible Follow The Service Procedure To Verify Hydraulic Circuit Leakage (Fail) Replace The CDF Clutch Cylinder (Do
Not Use With Any Other Labor Operations)

252126Q

12.1
Hrs.

Repair/Claim Coding
Causal Part:

7H351

Condition Code: 42

Service Procedure
How to back probe (Ranger shown, others similar)

1. Is a VCMM PVT available?
(1). Yes - proceed to "Diagnostic Procedure A - VCMM PVT Is Available"
(2). No - proceed to "Diagnostic Procedure B - No VCMM PVT Available"

Diagnostic Procedure A - VCMM PVT Is Available
1. Install the VCMM PVT to the transmission line pressure port. (Figure 1)
Figure 1

NOTE: The line pressure port is an M10X1.0 thread. Do not use a National Pipe Thread (NPT) fitting when installing pressure reading equipment. If an NPT fitting is
used, damage to the transmission case will occur.
NOTE: The transmission extension hose kit requires a 1/4 in. Joint Industry Council (JIC) male adapter.
NOTE: All NPT fittings must be assembled with polytetrafluoroethylene (PTFE) tape or paste to prevent leaks
VCMM Transmission Extension Kit
Locally obtain the necessary adapter fittings to connect the VCMM pressure transducer to the transmission line pressure port (Figure 2)
Figure 2

Item

Description

1

M10X1.0 male to 1/8 in. FNPT female

2

1/8 in. NPT male to 1/4 in. JIC male

3

Extension hose

2. Prepare the transmission LPC solenoid circuit CET50 to be back probed at either the TCM/ PCM connector or at the transmission electrical connector by removing the
connector cover. Access to the LPC solenoid circuit CET50, WH-OG wire is required in a later step. Refer to Wiring, Cell 030 Transmission Controls - 10R80 and the video link
at the start of the Service Procedure in this bulletin.
NOTE: Back probing the LPC solenoid circuit will set a DTC and illuminate the powertrain malfunction (wrench) indicator.
3. Using the latest software level of the IDS scan tool and VCMM, start a session. Verify the pressure units are set to PSI on the Change Settings screen and select the
following PIDs.
LINE DSD #
PVT (PRESS)
RPM # (RPM)
SSA_AMP# (CUR)
SSB_AMP # (CUR)
SSC_AMP # (CUR)
SSD_AMP # (CUR)
SSE_AMP # (CUR)
SSF _AMP # (CUR) (If Available)
TFT (TEMP)
4. Does the vehicle exhibit harsh/delayed engagement and/or harsh/delayed shift symptoms only when TFT is at 49°C (120°F) or below?
(1). Yes - perform Step 5 while TFT is at or below 49°C (120°F).
(2). No - perform Step 5 while TFT is at or above 50°C (122°F).
5. Start the engine, select the Data Logger tab, verify TFT is at the appropriate temperature range identified in Step 4.
(1). In the Data Logger screen, select the Recording Time button, set Capture Buffer Setup timings to duration = 60, Pre/Post Trigger = 30s. (Figure 3) Highlight the PVT PID
to set up PVT parameters by pressing Plot Format Limits and Range button to enter PVT-psi parameters (Figure 4) set parameters to Low = 0 and High = ~320 PSI.
Figure 3

Figure 4

(2). For each step below, highlight the PID to enable the PID. Press the OSC disable button (Figure 5, Callout 1), then select finger press button (Figure 5, Callout 2) and
control the PID using up and down arrow buttons (Figure 5, Callout 3).
Figure 5

Item

Description

1

OSC disable button

2

Finger press button

3

Up and down arrows

(3). Command SSA_AMP #/SSB_AMP #/SSC_AMP #/SSD_AMP #/SSE_AMP #/SSF_AMP # to 0mA.
(4). With the engine at idle speed, ground the LPC circuit to elevate line pressure using a VCMM Universal Probe Tip Adapter (Rotunda 164-R9834, or equivalent) along with
a suitable multimeter lead wire and probe (Figure 6) to back probe and ground the LPC solenoid circuit CET50. (Figure 7) Once line pressure has elevated and stabilized,
the ground probe is no longer needed to maintain elevated line pressure.

Figure 6

Item

Description

1

VCMM universal probe adapter

2

Multimeter lead wire

3

Multimeter lead wire probe

Figure 7

NOTE: Figure 7 shows back probing a PCM connector, other connectors are similar.
NOTE: Actual line pressure reading is expected to be less than commanded line pressure.
(5). Highlight SSA_AMP# PID.
(6). Begin recording.
(7). Wait 1 second.
(8). Command SSA_AMP # to 1.0A (ten quick up arrow clicks).
(9). Wait 2 seconds.
(10). Command SSA_AMP # to 0mA (ten quick down arrow clicks).
(11). Wait for the recording to complete.
(12). Highlight SSC_AMP# PID.
(13). Begin recording again.
(14). Wait 1 second.
(15). Command SSC_AMP # to 1.0A (ten quick up arrow clicks).
(16). Wait 2 seconds.
(17). Command SSC_AMP # off to 0mA (ten quick down arrow clicks).
(18). Wait for the recording to complete.
(19). Test is complete. Release control of all parameters then turn ignition off.
(20). Remove back probe from LPC solenoid circuit connector and reinstall the connector cover.
(21). Turn ignition on (KOEO) and clear all CMDTC.
(22). Turn ignition off.
6. Select the Data Logger tab.
7. Select the Playback Display sub-tab.
8. Select the Menu button, then select save recording group. (Figure 8)
Figure 8

9. Name the recording group.

10. Enter the Playback mode Lower Right File Manager button.
11. Select the file when SSA was commanded.
12. Highlight PVT Pressure > press the Expand Signal View button 3 clicks. (Figure 9). Unhighlight PVT Pressure > press the magnifying glass with + button 2 clicks. (Figure 10)
Figure 9

Figure 10

13. Download the CDF calculator tool.
NOTE: The calculator is an ".exe" file type. Make sure the computer firewall is set to allow this type of file to download.
(1). Click here to download the CDF calculator tool in English.
(2). Click here to download the CDF calculator tool in Spanish.
(3). Click here to download the CDF calculator tool in French.
14. Take a measurement when SSA_AMP = 0.00mA PVT Pressure at any valley (Figure 11) and enter the value into CDF calculator Pre Ramp Valley field. Take a measurement
when SSA_AMP = 0.00mA of PVT Pressure at any peak (Figure 12) and enter the value into the CDF calculator Pre Ramp Peak field.
Figure 11

Figure 12

15. Adjust the recording cursor until SSA_AMP = 1.00mA and then continue 1 additional second.
(1). Take a measurement of PVT Pressure at any valley (Figure 13) and enter the value into the CDF calculator Applied A Valley field.
Figure 13

(2). Take a measurement of PVT Pressure at any peak (Figure 14) and enter the value into the CDF calculator Applied A Peak field.
Figure 14

16. Select the file manager button and select the file when SSC was commanded.
17. Repeat Step 12.
18. Adjust recording cursor until SSC_AMP = 1.00mA and then continue 1 additional second.
(1). Take a measurement of PVT Pressure at any valley (Figure 15) and enter the value into the CDF calculator Applied C Valley field.

Figure 15

(2). Take a measurement of PVT Pressure at any peak (Figure 16) and enter the value into the CDF calculator Applied C Peak field.
Figure 16

19. Refer to the CDF calculator results. Does the “A-clutch Leakage Rate %” field display green?
(1). Yes - proceed to Step 20.
(2). No (field displays red) - this article does not apply. Refer to WSM, Section 307-01 > Diagnosis and Testing > A Clutch.
20. Does the “C-Clutch vs A-Clutch %” field display green?
(1). Yes - this article does not apply. Refer to WSM, Section 307-01 for normal diagnostics.
(2). No (field displays red) - proceed to "Repair Procedure" in this article.

Diagnostic Procedure B - No VCMM PVT Available
1. Install a suitable transmission fluid pressure gauge, that measures at least 300PSI (2000kPa) with vibration dampening, to the line pressure port. (Figure 1). Refer to Table 1.
NOTE: The line pressure port is an M10X1.0 thread. Do not use a National Pipe Thread (NPT) fitting when installing pressure reading equipment. If an NPT fitting is
used, damage to the transmission case will occur.
NOTE: All NPT fittings must be assembled with polytetrafluoroethylene (PTFE) tape or paste to prevent leaks.
Table 1- Ford tested suitable transmission fluid pressure gauges
Description
Ashcroft 0-300PSI Vibration Dampened
Lang Instruments Model 5TUL8 (requires piston-type pressure gauge snubber)

Source
Grainger

Part Number
351009SW02LXLL300

• Rotunda RTTP

• Gauge: STATU16A

• Grainger

• Snubber: 5TUL8

Snap-On 0-500PSI Gauge and Boot

Snap-On

EEPV5-500G

Waekon Digital Pressure Gauge

Rotunda RTTP

WAE48165

Pressure Pro PC 5000

Rotunda RTTP

300-WAE48365

2. Prepare the transmission LPC solenoid circuit CET50 WH-OG wire to be back probed at either the TCM/ PCM connector or at the transmission electrical connector by
removing the connector cover. Access to the LPC solenoid circuit CET50, WH-OG wire is required in a later step. Refer to Wiring, Cell 030 Transmission Controls - 10R80 and
the video link at the start of the Service Procedure in this bulletin.
NOTE: Back probing the LPC solenoid circuit will set a DTC and illuminate the powertrain malfunction (wrench) indicator.
3. Using the latest software level of the IDS scan tool and VCMM, start a session. Verify the pressure units are set to PSI on the Change Settings screen and select the
following PIDs.
LINE DSD #
PVT (PRESS)
RPM # (RPM)
SSA_AMP# (CUR)
SSB_AMP # (CUR)
SSC_AMP # (CUR)
SSD_AMP # (CUR)
SSE_AMP # (CUR)
SSF _AMP # (CUR) (If Available)
TFT (TEMP)
4. Does the vehicle exhibit harsh/delayed engagement and/or harsh/delayed shift symptoms only when TFT is at 49°C (120°F) or below?
(1). Yes - perform Step 5 while TFT is at or below 49°C (120°F).
(2). No - perform Step 5 while TFT is at or above 50°C (122°F).
5. Start the engine, select the Data Logger tab, verify TFT is at the appropriate temperature range identified in Step 4.
(1). For each step below, highlight the PID to enable the PID. Press the OSC disable button (Figure 5, Callout 1), then select finger press button (Figure 5, Callout 2) and
control the PID using up and down arrow buttons (Figure 5, Callout 3).
(2). With the engine at idle speed, ground the LPC circuit to elevate line pressure using a VCMM Universal Probe Tip Adapter (Rotunda 164-R9834, or equivalent) along with
a suitable multimeter lead wire and probe (Figure 6) to back probe and ground the LPC solenoid circuit CET50. (Figure 7) Once line pressure has elevated and stabilized,
the ground probe is no longer needed to maintain elevated line pressure.
NOTE: Figure 7 shows back probing a PCM connector, other connectors are similar.
NOTE: Actual line pressure reading is expected to be less than commanded line pressure.
(3). Record the pressure value observed on the gauge as Pre Ramp.
(4). Command SSA_AMP # to 1.0A (ten quick up arrow clicks).

(5). Record the pressure value observed on the gauge as Applied A.
(6). Command SSA_AMP # to 0mA (ten quick down arrow clicks).
(7). Command SSC_AMP # to 1.0A (ten quick up arrow clicks).
(8). Record the pressure value observed on the gauge as Applied C.
(9). Command SSC_AMP # PID off to 0mA (ten quick down arrow clicks).
(10). Test is complete. Release control of all parameters then turn ignition off.
(11). Remove back probe from LPC solenoid circuit connector and reinstall the connector cover.
(12). Turn ignition on (KOEO) and clear all CMDTCs.
(13). Turn ignition off.
6. Download the CDF calculator tool.
NOTE: The calculator is an ".exe" file type. Make sure the computer firewall is set to allow this type of file to download.
(1). Click here to download the CDF calculator tool in English.
(2). Click here to download the CDF calculator tool in Spanish.
(3). Click here to download the CDF calculator tool in French.
7. Enter the value recorded as Pre Ramp into the CDF calculator for both fields Pre Ramp Valley and Pre Ramp Peak.
8. Enter the value recorded as Applied A into the CDF calculator for both fields Applied A Valley and Applied A Peak.
9. Enter the value recorded as Applied C into the CDF calculator for both fields Applied C Valley and Applied C Peak.
10. Refer to the CDF calculator results. Does the “A-clutch Leakage Rate %” field display green?
(1). Yes - proceed to Step 11.
(2). No (field displays red) - this article does not apply. Refer to WSM, Section 307-01 > Diagnosis and Testing > A Clutch.
11. Does the “C-Clutch vs A-Clutch %” field display green?
(1). Yes - this article does not apply. Refer to WSM, Section 307-01 for normal diagnostics.
(2). No (field displays red) - proceed to "Repair Procedure" in this article.

Repair Procedure
1. Remove the transmission and mount the transmission to the bench. Refer to WSM, Section 307-01.
2. Disassemble the transmission. Perform only the necessary steps to remove the clutch and planetary assembly from the transmission case. Refer to WSM, Section 307-01.
(1). It is only necessary to remove the torque converter, transmission fluid pan and gasket, transmission fluid auxiliary pump (if equipped), fluid filter and main control valve
body assembly, all 4 speed sensors (intermediate speed sensor A [ISSA], intermediate speed sensor B [ISSB], TSS and OSS), transmission fluid pump, front support
assembly and the clutch and planetary assembly. Refer to WSM, Section 307-01.
3. Disassemble the clutch and planetary assembly. Perform only the necessary steps to remove the clutch and planetary container cylinder, the CDF clutch cylinder and the No.
3 sun gear shaft and No. 2 ring gear assembly from the clutch and planetary assembly. Refer to WSM, Section 307-01.
(1). It is only necessary to remove the A clutch assembly, the selective shim and T3 thrust bearing, remove and discard the 5-input shaft front seals.
(2). Remove the No. 1 planetary carrier snap ring, clutch and planetary container cylinder, the No. 4 ring gear snap ring and the No. 4 ring gear from the clutch and planetary
container cylinder. Discard the clutch and planetary container cylinder. Refer to WSM, Section 307-01.
(3). Remove the E clutch and input shaft assembly, the No. 3 planetary carrier and No. 3 sun gear, the No. 3 sun gear shaft and No. 2 ring gear assembly. Refer to WSM,
Section 307-01.
4. Remove and discard the sun gear No. 3 shaft seals. Install the 4 new sun gear No. 3 shaft seals. Refer to WSM, Section 307-01.
5. Disassemble the C, D and F clutch assemblies from the CDF cylinder. Discard the CDF cylinder. Refer to WSM, Section 307-01.
6. Assemble the C, D and F clutch assemblies into the new CDF clutch cylinder. Refer to WSM, Section 307-01.
7. Perform the C, D and F clutch pack endplay measurements for proper clearance. Refer to WSM, Section 307-01.
8. Remove and discard the input shaft-to-sun gear No. 3 shaft seals. Install the 5 new input shaft-to-sun gear No. 3 shaft seals. Refer to WSM, Section 307-01.
9. Remove and discard the input shaft seal. Install the new input shaft seal. Refer to WSM, Section 307-01.
10. Install the 5 new input shaft front seals. Refer to WSM, Section 307-01.
11. Install the No. 4 ring gear and snap ring into a new clutch and planetary container cylinder.
12. To reassemble the clutch and planetary assembly, reverse the disassembly procedure. Refer to WSM, Section 307-01.
13. Perform the T3 thrust bearing measurement to set transmission front end clearance. Refer to WSM, Section 307-01.
14. Reassemble the transmission. Refer to WSM, Section 307-01.
15. Install the transmission. Refer to WSM, Section 307-01.
16. Perform an adaptive learning drive cycle. Refer to WSM, Section 307-01.
NOTE: Advise the customer that this vehicle is equipped with an adaptive transmission shift strategy which allows the vehicle's computer to learn the
transmission's unique parameters and improve shift quality. When the adaptive strategy is reset, the computer will begin a relearning process. This relearning
process may result in firmer than normal upshifts and downshifts for several days.

© 2025 Ford Motor Company
All rights reserved.
NOTE: The information in Technical Service Bulletins is intended for use by trained, professional technicians with the knowledge, tools, and equipment to do the job properly and safely. It informs these technicians of
conditions that may occur on some vehicles, or provides information that could assist in proper vehicle service. The procedures should not be performed by "do-it-yourselfers". Do not assume that a condition described
affects your car or truck. Contact a Ford or Lincoln dealership to determine whether the Bulletin applies to your vehicle. Warranty Policy and Extended Service Plan documentation determine Warranty and/or Extended
Service Plan coverage unless stated otherwise in the TSB article. The information in this Technical Service Bulletin (TSB) was current at the time of printing. Ford Motor Company reserves the right to supersede this
information with updates. The most recent information is available through Ford Motor Company's on-line technical resources.