NHTSA ID Number: 10171958
Manufacturer Communication Number: 19B40
TSB/Document Date: 2020-03-03
Summary
In the affected vehicles, the single-engaging coast one-way clutch (OWC) inside the transmission may experience a weld concern. If this weld fails, it can affect the ability of the transmission to transmit torque. Loss of vehicle mobility in this application may result in the need to transfer passengers if the vehicle is immobilized.
307-221
TRANSMISSION FLUID
PUMP REMOVER
FIGURE 8
STUD 1926H
FOR
MISSING NUT
PLACE COPY HERE
PLACE COPY HERE
PLACE COPY HERE
CPR © 2020 FORD MOTOR COMPANY
DEARBORN, MICHIGAN 48121
02/2020
ATTACHMENT III
PAGE 7 OF 32
CUSTOMER SATISFACTION PROGRAM 19B40
10. Remove and discard the front pump gasket. See Figure 9.
1926J
FIGURE 9
11. Remove the No. 2A overdrive sun gear thrust bearing. See Figure 10.
No. 2A OVERDRIVE
SUN GEAR THRUST
BEARING
STUD FOR
MISSING NUT
STUD FOR
MISSING NUT
1926I
FIGURE 10
STUD FOR
MISSING NUT
PLACE COPY HERE
PLACE COPY HERE
PLACE COPY HERE
CPR © 2020 FORD
MOTOR COMPANY
DEARBORN, MICHIGAN 48121
02/2020
STUD FOR
MISSING NUT
ATTACHMENT III
PAGE 8 OF 32
CUSTOMER SATISFACTION PROGRAM 19B40
12. Remove the overdrive separator plates, clutch plates and overdrive pressure plate.
See Figures 11 and 12.
OVERDRIVE SEPARATOR,
CLUTCH AND PRESSURE
PLATE LOCATION
SEPARATOR PLATE
1926K
FIGURE 11
CLUTCH PLATE
PRESSURE PLATE
FIGURE 12
STUD
FOR
1926L
MISSING NUT
STUD FOR
MISSING NUT
PLACE COPY HERE
PLACE COPY HERE
PLACE COPY HERE
CPR © 2020 FORD MOTOR COMPANY
DEARBORN, MICHIGAN 48121
02/2020
STUD FOR
ATTACHMENT III
PAGE 9 OF 32
CUSTOMER SATISFACTION PROGRAM 19B40
13. Install the Clutch Loading Fixture and Handle (307-S383), onto the coast clutch assembly.
See Figures 13 and 14.
1926M
FIGURE 13
STUD FOR
MISSING NUT
FIGURE 14
STUD
1926N FOR
MISSING NUT
STUD FOR
MISSING NUT
PLACE COPY HERE
PLACE COPY HERE
PLACE COPY HERE
CPR © 2020 FORD MOTOR COMPANY
DEARBORN, MICHIGAN 48121
02/2020
STUD FOR
MISSING NUT
STUD FOR
ATTACHMENT III
PAGE 10 OF 32
CUSTOMER SATISFACTION PROGRAM 19B40
14. Remove the coast clutch assembly from the transmission then remove the Clutch Loading Fixture
from the coast clutch assembly. See Figure 15.
COAST CLUTCH
ASSEMBLY
1926O
FIGURE 15
STUD FOR
MISSING NUT
STUD FOR
MISSING NUT
STUD FOR
MISSING NUT
PLACE COPY HERE
PLACE COPY HERE
PLACE COPY HERE
CPR © 2020 FORD MOTOR COMPANY
DEARBORN, MICHIGAN 48121
02/2020
ATTACHMENT III
PAGE 11 OF 32
CUSTOMER SATISFACTION PROGRAM 19B40
15. Remove the No. 4 thrust bearing. See Figure 16.
No. 4 THRUST
BEARING
1926P
FIGURE 16
16. Separate the coast clutch hub assembly from the coast clutch assembly and set the coast clutch hub
assembly aside to be reinstalled later in this procedure. See Figure 17.
COAST CLUTCH
HUB ASSEMBLY
STUD FOR
MISSING NUT
STUD FOR
MISSING NUT
STUD FOR
MISSING NUT
COAST CLUTCH
ASSEMBLY
FIGURE 17
CPR © 2020 FORD MOTOR COMPANY
DEARBORN, MICHIGAN 48121
02/2020
PLACE1926Q
COPY HERE
PLACE COPY HERE
PLACE COPY HERE
ATTACHMENT III
PAGE 12 OF 32
CUSTOMER SATISFACTION PROGRAM 19B40
17. Remove the retaining ring from the coast clutch pressure plate One-Way Clutch (OWC).
See Figure 18.
RETAINING RING
COAST CLUTCH
PRESSURE PLATE
(OWC)
1926R
FIGURE 18
18. Remove and discard the coast clutch pressure plate OWC assembly. Then remove the clutch plates
and set them aside to be installed into the new coast clutch cylinder assembly later in this procedure.
See Figure 19.
90 DEGREE ANGLE PICK
COAST CLUTCH
PRESSURE PLATE
(OWC)
STUD FOR
MISSING NUT
STUD FOR
MISSING NUT
CLUTCH PLATES
FIGURE 19
STUD FOR
MISSING
1926S NUT
PLACE COPY HERE
PLACE COPY HERE
PLACE COPY HERE
CPR © 2020 FORD MOTOR COMPANY
DEARBORN, MICHIGAN 48121
02/2020
ATTACHMENT III
PAGE 13 OF 32
CUSTOMER SATISFACTION PROGRAM 19B40
19. Using the Clutch Spring Compressor Aligner (307-455) and Clutch Spring Compressor (307-015),
remove the coast clutch return spring retaining ring. See Figures 20 and 21.
NOTICE: Do not over compress the return spring or damage to the spring will occur.
1926T
FIGURE 20
COAST CLUTCH
RETURN SPRING
RETAINING RING
STUD FOR
MISSING NUT
STUD FOR
MISSING
NUT
1926U
FIGURE 21
STUD FOR
MISSING NUT
PLACE COPY HERE
PLACE COPY HERE
PLACE COPY HERE
CPR © 2020 FORD MOTOR COMPANY
DEARBORN, MICHIGAN 48121
02/2020
STUD FOR
ATTACHMENT III
PAGE 14 OF 32
CUSTOMER SATISFACTION PROGRAM 19B40
20. Remove the Clutch Spring Compressor Aligner and Clutch Spring Compressor, then remove the
coast clutch return spring. See Figure 22.
SUN GEAR
COAST CLUTCH
RETURN SPRING
1926V
FIGURE 22
STUD FOR
MISSING NUT
STUD FOR
MISSING NUT
STUD FOR
MISSING NUT
PLACE COPY HERE
PLACE COPY HERE
CPR © 2020 FORD MOTOR COMPANY
DEARBORN, MICHIGAN 48121
02/2020
PLACE COPY HERE
ATTACHMENT III
PAGE 15 OF 32
CUSTOMER SATISFACTION PROGRAM 19B40
21. Using an arbor press, V-block plate and impact sockets, remove the sun gear. Discard the original
coast clutch cylinder assembly and piston. See Figures 23 and 24.
COAST CLUTCH
CYLINDER ASSEMBLY
2-3/8 INCH DEEP
IMPACT SOCKET
30MM DEEP
IMPACT SOCKET
1926W
FIGURE 23
SUN GEAR
COAST CLUTCH
CYLINDER
STUD FOR
COAST CLUTCH
MISSING NUT
PISTON
1926X
FIGURE 24
STUD FOR
MISSING NUT
STUD FOR
MISSING NUT
PLACE COPY HERE
PLACE COPY HERE
PLACE COPY HERE
CPR © 2020 FORD MOTOR COMPANY
DEARBORN, MICHIGAN 48121
02/2020
STUD FOR
ATTACHMENT III
PAGE 16 OF 32
CUSTOMER SATISFACTION PROGRAM 19B40
22. Install the original sun gear onto the new coast clutch cylinder assembly. See Figures 25 and 26.
SUN GEAR
1926Y
FIGURE 25
STUD FOR
MISSING NUT
STUD FOR
MISSING NUT
STUD FOR
MISSING NUT
1926Z
FIGURE 26
PLACE COPY HERE
PLACE COPY HERE
PLACE COPY HERE
CPR © 2020 FORD MOTOR COMPANY
DEARBORN, MICHIGAN 48121
02/2020
ATTACHMENT III
PAGE 17 OF 32
CUSTOMER SATISFACTION PROGRAM 19B40
NOTE: Prior to installation, lightly lubricate all O-ring seals with automatic transmission fluid.
23. Lube the inner and outer coast clutch piston seals with automatic transmission fluid and install the
new piston into the new coast clutch cylinder using the Clutch Piston Seal Protector (307-387).
See Figure 27.
CLUTCH PISTON
SEAL PROTECTOR
(307-387)
CLUTCH PISTON
1926AA
FIGURE 27
24. Install the coast clutch return spring into the new coast clutch cylinder assembly. Using the Clutch
Spring Compressor Aligner (307-455) and Clutch Spring Compressor (307-015), install the coast
clutch return spring retaining ring. Refer to Figures 20, 21 and 22.
NOTE: If the retaining ring will not seat, ensure that the retaining ring is installed in the correct retaining
ring slot.
STUD FOR
MISSING NUT
STUD FOR
MISSING NUT
STUD FOR
MISSING NUT
PLACE COPY HERE
PLACE COPY HERE
PLACE COPY HERE
CPR © 2020 FORD MOTOR COMPANY
DEARBORN, MICHIGAN 48121
02/2020
ATTACHMENT III
PAGE 18 OF 32
CUSTOMER SATISFACTION PROGRAM 19B40
25. Install the new coast clutch pressure plate OWC assembly and the clutch plates starting with the
externally splined steel clutch plate. See Figures 19, 28a and 28b.
NOTE: When installing the new coast clutch pressure plate OWC, the words "THIS SIDE UP" should be
visible.
1926BB
FIGURE 28a
Item
Description
1
Steel clutch plates (externally splined)
2
Friction clutch plates (internally splined)
3
Mechanical diode (One-Way Clutch (OWC)
2
2
1
1
STUD FOR
MISSING NUT
STUD FOR
MISSING NUT
3
1
STUD FOR
MISSING NUT
2
FIGURE 28b
1926GGG
PLACE
COPY HERE
PLACE COPY HERE
PLACE COPY HERE
CPR © 2020 FORD MOTOR COMPANY
DEARBORN, MICHIGAN 48121
02/2020
ATTACHMENT III
PAGE 19 OF 32
CUSTOMER SATISFACTION PROGRAM 19B40
26. Install the coast clutch pressure plate OWC retaining snap ring. See Figure 18.
27. Air check the coast clutch assembly by stacking the torque converter, transmission fluid front pump
and the coast clutch assembly as shown in Figure 29. Using a rubber tipped blow gun, apply 20 psi
(138 kPa) of air to the coast clutch assembly test port on the transmission fluid front pump as
shown in Figure 29. Unstack the transmission fluid front pump and the coast clutch assembly from
the torque converter.
• A dull thud may be heard or movement felt when the clutch piston is applied during the air
check.
WARNING: Always wear protective safety glasses with side shields. Failure to follow this
instruction may result in serious personnel injury.
WARNING: Only use short bursts of air, not to exceed 20 psi (138 kPa), when testing the coast
clutch assembly. Failure to follow this instruction may result in component damage and/or
serious personnel injury.
COAST CLUTCH
ASSEMBLY
COAST CLUTCH
AIR CHECK PORT
TORQUE CONVERTER
1926FF
FIGURE 29
CPR © 2020 FORD MOTOR COMPANY
DEARBORN, MICHIGAN 48121
02/2020
ATTACHMENT III
PAGE 20 OF 32
CUSTOMER SATISFACTION PROGRAM 19B40
28. Install the coast clutch hub assembly into the coast clutch cylinder assembly. See Figure 30.
1926DD
FIGURE 30
NOTE: Lightly lubricate all thrust bearings and washers with petroleum jelly to hold them in place during
assembly as needed.
29. Install the No. 4 thrust bearing and washer onto the coast clutch hub assembly. See Figure 31.
No. 4 THRUST
BEARING AND WASHER
STUD FOR
MISSING NUT
STUD FOR
MISSING NUT
COAST CLUTCH
HUB ASSEMBLY
FIGURE 31
STUD FOR
No. 4 THRUST
MISSING NUT
BEARING AND WASHER
PLACE
COPY HERE
1926EE
PLACE COPY HERE
PLACE COPY HERE
CPR © 2020 FORD MOTOR COMPANY
DEARBORN, MICHIGAN 48121
02/2020
ATTACHMENT III
PAGE 21 OF 32
CUSTOMER SATISFACTION PROGRAM 19B40
30. Using the Clutch Loading Fixture (307-S383), install the coast clutch assembly.
See Figures 32 and 33.
1926GG
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TSB/Document ID: 19B40
Replacement Service Bulletin Number:
MFR Communication Date: 2020-02-21
MFR Internal Campaign ID/Software Version:
Communication Type: Service Bulletin/Repair Instructions
NHTSA Components: POWER TRAIN
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