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Technical Service Information
FORD F4E-lll
VALVE BODY CHANGES
CHANGE: Beginning at the start of production for the 1998 model year, Escort and Tracer vehicles equipped
with the new F4E-III transaxle recieved a totally new valve body assembly, with many engineering
changes that will affect service.
REASON: Improved line pressure and torque converter clutch control.
PARTS AFFECTED:
The pressure control solenoid, solenoid body, spacer plate and gaskets were changed . The
pressure modifier valve was also changed and a spring was added to the end of the valve and an
adjustable bore plug replaced the old retainer. Refer to Figure 1 for the previous design parts
and Figure 2 for the new design parts as well as the new pressure modifier valve line-up.
The main valve body upper side was changed to accomodate the new pressure control solenoid
body and spacer plate. Refer to Figure 3.
The main valve body lower side was changed to incorperate a new solenoid reducing valve.
See Figure 4 for the previous design and Figure 5 for the new design.
The main valve body spacer plate and gaskets were changed to accomodate the changes in the
premain valve body. See Figure 6 for the previous design spacer plate and Figure 7 for the new
design.
The premain valve body upper side casting was changed and a screen was added in line pressure
feed passage to the solenoid reducing valve. Refer to Figure 8 for previous design casting and
Figure 9 for the casting change and the added screen.
The premain valve body lower side and the lock-up control valve were changed. Refer to Figure
10 for the previous design lock-up control valve installation. Refer to Figure 11 for the new
design lock-up control valve and its installation. NOTE: the valve is bored on the opposite side,
to accomodate the new spring placement on the opposite side.
The premain cover, spacer plate and gaskets were changed and the tube on the exterior was
eliminated. Refer to Figure 12 to see the previous design. Refer to Figure 13 to see the new
design.
Refer to Figure 14 for an Oil Circuit diagram outlining the pressure control hydraulic circuit
and the TCC Control Valve as well as the function of the exterior tube.
Refer to Figure 15 for an Oil Circuit diagram outlining the pressure control hydraulic circuit,
the added Solenoid Reducing valve and its function and the added line pressure passage to the
TCC Control Valve.
INTERCHANGEABILITY:
None of the parts listed above can be used in any previous models. However, when using the
complete 1998 valve body as a service package, it will retro-fit back to previous models, equipped
with the F4E-III transaxle.
Copyright © 2001 ATSG
02-22
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Technical Service Information
F4E-lll VALVE AND PASSAGE I.D.
"97" PRESSURE CONTROL SOLENOID BODY
AND SPACER PLATE
PRESSURE MODIFIER
EPC SOLENOID ACCUMULATOR
Filter
Filter
PRESSURE MODIFIER
VALVE
Copyright © 2001 ATSG
Figure 1 02-22
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Technical Service Information
F4E-lll VALVE AND PASSAGE I.D.
"98" PRESSURE CONTROL SOLENOID BODY
AND SPACER PLATE
PRESSURE MODIFIER
ACCUMULATOR
EPC SOLENOID
Filter
Filter
.034" REMOVEABLE ORIFICE
PRESSURE MODIFIER
VALVE
ADJUSTABLE
BORE PLUG Copyright © 2001 ATSG
Figure 2
02-22
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Technical Service Information
F4E-lll VALVE AND PASSAGE I.D.
"97" MAIN VALVE BODY (UPPER) "98" MAIN VALVE BODY (UPPER)
301U
Copyright © 2001 ATSG
Figure 3 02-22
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Technical Service Information
F4E-lll VALVE AND PASSAGE I.D.
"97" MAIN VALVE BODY (LOWER)
Pressure Regulator Valve
1-2 Shift Valve
Low Reducing Valve
Low-Reverse
Shuttle Ball
Plug
Coast Clutch
Feed Ball
3-4 Shift Valve
Forward Clutch
Feed Ball
Copyright © 2001 ATSG
Figure 4 02-22
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Technical Service Information
F4E-lll VALVE AND PASSAGE I.D.
"98" MAIN VALVE BODY (LOWER)
Pressure Regulator Valve
1-2 Shift Valve
Low-Reverse
Shuttle Ball Low Reducing Valve
ADDED Solenoid
Reducing Valve
Coast Clutch
Feed Ball
3-4 Shift Valve
Forward Clutch
Feed Ball
Copyright © 2001 ATSG
Figure 5 02-22
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Technical Service Information
F4E-lll VALVE AND PASSAGE I.D.
"97" MAIN VALVE BODY SPACER PLATE
Copyright © 2001 ATSG
Figure 6
02-22
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Technical Service Information
F4E-lll VALVE AND PASSAGE I.D.
"98" MAIN VALVE BODY SPACER PLATE
Copyright © 2001 ATSG
Figure 7
02-22
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Technical Service Information
F4E-lll VALVE AND PASSAGE I.D.
"97" PREMAIN VALVE BODY (UPPER)
3rd. Circuit
Feed Ball
Filter
Reverse Clutch
Feed Ball
Copyright © 2001 ATSG
Figure 8
02-22
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Technical Service Information
F4E-lll VALVE AND PASSAGE I.D.
"98" PREMAIN VALVE BODY (UPPER)
ADDED Filter
3rd. Circuit
Feed Ball
Filter
Reverse Clutch
Feed Ball
Copyright © 2001 ATSG
Figure 9
02-22
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Technical Service Information
F4E-lll VALVE AND PASSAGE I.D.
"97" PREMAIN VALVE BODY (LOWER)
Bypass Valve
2-3 Shift Valve
Torque Converter
Relief Valve
Filter
Lock-up
Control Valve
502L
JC
13
7L
Copyright © 2001 ATSG
Figure 10
02-22
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Technical Service Information
F4E-lll VALVE AND PASSAGE I.D.
"98" PREMAIN VALVE BODY (LOWER)
Bypass Valve
2-3 Shift Valve
Torque Converter
Relief Valve
Filter
Lock-up
Control Valve*
502L
JC
13
7L
* NOTE: THE VALVE HAS THE HOLE AND THE SPRING
AT THE OPPOSITE END OF THE VALVE
Copyright © 2001 ATSG
Figure 11
02-22
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Technical Service Information
F4E-lll VALVE AND PASSAGE I.D.
"97" PREMAIN COVER AND SPACER PLATE
FROM TUBE
Filter
FROM TUBE
Filter
Copyright © 2001 ATSG
Figure 12
02-22
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Technical Service Information
F4E-lll VALVE AND PASSAGE I.D.
"98" PREMAIN COVER AND SPACER PLATE
Filter
Filter
Copyright © 2001 ATSG
Figure 13
02-22
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"97" F4E-lll ELECTRONIC PRESSURE CONTROL
HYDRAULIC CIRCUIT
Pressure Modifier Pressure Modifier
Valve Filter Accumulator Valve
LEGEND
X X X X X
MAIN LINE PRESSURE
CONVERTER PRESSURE
EPC
MODIFIER PRESSURE
CONNECTED CIRCUIT
Filter .030"
.039"
.039"
.031"
Pressure Regulator
"L" TAP Valve
ON FRONT
OF CASE
TO 1-2 SHIFT VALVE
(3RD LAND) AND
Figure 14
MANUAL VALVE
"T" PRESSURE
TAP ON PUMP
X WHICH IS NOT
USUALLY DRILLED
TCC
.047"
TCC SOLENOID
N.C. TO TCC VALVE &
TORQUE CONVERTER
TO 3-2
Tcc Control Valve AND 2-3 TIMING
Technical Service Information
AUTOMATIC TRANSMISSION SERVICE GROUP
TCC Bypass Valve WHICH DO NOT
EXHIST ON F4E-3
APPLY
}
X X 3-4 CLUTCH CIRCUIT
X X
TCC FROM CONVERTER
RELEASE RELIEF VALVE
FROM PUMP
02-22
AND FILTER TUBE
Copyright © 2001 ATSG
Page 15 of 16
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"98" F4E-lll ELECTRONIC PRESSURE CONTROL
HYDRAULIC CIRCUIT
Pressure Modifier Pressure Modifier
LEGEND Valve Accumulator Valve
Filter X
MAIN LINE PRESSURE Filter X X
CONVERTER PRESSURE
MODIFIER PRESSURE
SOLENOID RED. PRESSURE EPC
EPC PRESSURE
CONNECTED CIRCUIT
.031" .039" .039" .034" .039"
Pressure Regulator ADDED Solenoid
Valve Reducing
Valve
X
TO 1-2 SHIFT VALVE
(3RD LAND) AND
Figure 15
MANUAL VALVE
TCC
TCC SOLENOID
N.C. X X X
.039"
.047" Added
TO TCC VALVE & Filter
TORQUE CONVERTER
Tcc Control Valve
Technical Service Information
AUTOMATIC TRANSMISSION SERVICE GROUP
TCC Bypass Valve
APPLY
}
3-4 CLUTCH CIRCUIT
X X FROM PUMP
TCC FROM CONVERTER
RELEASE RELIEF VALVE
AND FILTER
02-22
Copyright © 2001 ATSG
Page 16 of 16
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