Ford 5R55W/S
TIME TESTED INDUSTRY TRUSTED
Critical Wear Areas & Vacuum Test Locations
20
Note: OE valves are shown in rest position and should be tested in rest position unless otherwise indicated. Test locations are pointed to
with an arrow. Springs are not shown for visual clarity. Low vacuum reading indicates wear.
Click on Sonnax part numbers to see more information.
VFS1 Modulator Control Valve
Pressure Regulator Valve
Delayed engagement
Soft shifts
Insufficient line rise
Erratic buzz
High/uncontrollable line pressure in reverse
Low line pressure
Slipping upshifts
Burned intermediate and/or low/reverse band
Replace with Sonnax Part No.
56947J-19K Requires F-56947J-TL19 & VB-FIX
15
10
25
0
30
VACUUM
TEST
Plug casting valley with foam, putty or appropriately sized O-ring coated in
assembly lube to isolate circuits.
Boost Valve
Assembly
Poor line rise
Slipping upshifts
Burnt bands/clutches
Converter Feed Limit Valve
Front lube failure
Overheat and/or delayed engagement
Increased stall RPM
Replace with Sonnax Part No.
56947J-61K Requires F-56947J-TL61 &
VB-FIX
Install Sonnax Part No.
56947J-09K Requires 56947J-TL9
Solenoid Feed
Limit Valve
Reverse Servo Control Valve
Gear ratio codes 731 to 741
No TCC apply
Flooded solenoids
No/delayed reverse
Burned low/reverse band
Replace with Sonnax Part
No.
56947J-61K
Requires F-56947J-TL61 & VB-FIX
Reverse Engagement Valve
Slipping/no/delayed reverse
Burned direct clutch
Replace with Sonnax Part No.
56947J-29K Requires F-27741-TL13 & VB-FIX
VFS1 Port
Reverse Modulator Valve
Low line pressure
Slipping shifts
NOTE: Check for wear on end plugs.
Delayed reverse engagement
Loss of 4th or 5th
Burned direct clutch
Replace with Sonnax Part No.
56947J-23K Requires F-27741-TL13 & VB-FIX
Intermediate Servo
Select Valve
Direct Clutch Control Valve
Burned intermediate band
Burned direct clutch
Delayed reverse engagement
Loss of 4th or 5th
Burned direct clutch
Forward Engagement Valve
Intermediate Servo
Release Valve
Replace with Sonnax Part No.
56947J-26K Requires F-27741-TL13 & VB-FIX
Slipping/no/delayed forward
Burned forward clutch
Burned intermediate band
Overdrive Servo Control Valve
VFS2 Modulator Control Valve
Burned overdrive band
Low line pressure
Slipping upshifts
Burned overdrive band
Burned coast clutch
TCC Modulator Valve
Codes 741 or 1783
Transmission overheat
High line pressure
Replace with Sonnax Part No.
56947J-19K
Requires F-56947J-TL19 & VB-FIX
Replace with Sonnax Part No.
56947J-15K Requires F-56947J-TL15 & VB-FIX
Coast Clutch Control Valve
Burned coast clutch
Converter Clutch Back
Pressure Valve
Excessive TCC slip
Converter codes
Burned converter lining
Test these
together.
TCC Control Valve
Excess TCC slip
Restricted cooler flow
TCC lining coming off Code 741
Overheated converters
TCC Modulator Sleeve &
Plunger Assembly
High TCC slip RPM at increasing load
Slip codes
Elevated fluid temperature
Replace with Sonnax Part No.
56947J-01K
56947J-03K
OE Ratio
Increased Ratio
Replace with Sonnax Part No.
56947J-05K Requires F-56947J-TL2 & VB-FIX
2014 Sonnax Industries, Inc.
800-843-2600 802-463-9722 F: 802-463-4059 www.sonnax.com
5R55W-S_VacTestLocations01-06-14
Page 1
Ford 5R55W/S
TIME TESTED INDUSTRY TRUSTED
OE Exploded View
Lower Valve Body Descriptions
I.D. No.
Description
101
TCC Control Valve (inboard)
Fluid Cooler Bypass
& Thermo Valve (outboard)
102
Converter Clutch Back Pressure
Valve (inboard)
Coast Clutch Control Valve
(outboard)
103
VFS2 Modulator Control Valve
104
Intermediate Servo Release Valve
105
Direct Clutch Control Valve
106
Reverse Modulator Valve
107
Reverse Engagement Valve
108
VFS1 Modulator Control Valve
109
Main Regulator Valve (inboard)
Boost Valve & Sleeve (outboard)
110
Solenoid Feed Limit Valve
(inboard)
Coverter Feed Limit Valve
(outboard)
111
Manual Valve
112
Rear Servo Control Valve
113
Intermediate Servo Select Valve
114
Forward Engagement
Control Valve
115
Overdrive Servo Control Valve
116
TCC Modulator Valve (inboard)
TCC Plunger Valve & Sleeve
(outboard)
109
110
111
108
107
112
106
113
105
104
103
102
114
115
116
101
2014 Sonnax Industries, Inc.
800-843-2600 802-463-9722 F: 802-463-4059 www.sonnax.com
5R55W-S_VacTestLocations01-06-14
Page 2
