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Technical Service Information
FORD AX4N
ACCUMULATOR SPRING IDENTIFICATION
COMPLAINT: Shift quality complaints of various types, mostly harsh shift complaints, after the
transmission has been overhauled.
CAUSE: The accumulator springs may have been installed in incorrect positions, or the accumulator
piston shafts are scored or worn and are interfering with proper accumulator piston
movement. It is also important to insure that multiple accumulator spring applications must
have the springs wound in opposite directions of each other to avoid coil bind, as shown in
Figure 1.
CORRECTION: Ensure that the accumulator springs have been installed in their proper locations. Refer to
Figure 2 for accumulator spring identification and Figure 1 for position. We have also
provided you with the accumulator spring specifications in Figure 3.
SERVICE INFORMATION:
Part numbers for each accumulator spring is provided in the chart in Figure 2.
Copyright © 2002 ATSG
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Technical Service Information
ACCUMULATOR SPRINGS
SPRINGS ARE WOUND OPPOSITE OF EACH OTHER TO AVOID COIL BIND
Neutral-Reverse 2-3 Accumulator
Accumulator Spring Location
Spring Location
1-2 Accumulator
Spring Location
3-4 Accumulator
Spring Location
Neutral-Drive
Accumulator
Spring Location
Copyright © 2002 ATSG
Figure 1
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Technical Service Information
AX4N, 1-2 ACCUMULATOR SPRINGS
INNER SPRING OUTER SPRING
APPLICATION
Color Part Number Color Part Number
"All" Except "SHO" None Used No Color F5DZ-7G267-A
All "SHO" V/8 No Color *F7DZ-7D397-AA Purple F6DZ-7G267-A
* Service package which includes piston.
AX4N, 2-3 ACCUMULATOR SPRINGS
INNER SPRING OUTER SPRING
APPLICATION
Color Part Number Color Part Number
"All Models" None Used Orange F5DZ-7F285-A
AX4N, 3-4 ACCUMULATOR SPRINGS
INNER SPRING OUTER SPRING
APPLICATION
Color Part Number Color Part Number
"All Models" None Used Blue F5DZ-7G266-A
AX4N, NEUTRAL-REVERSE ACCUMULATOR SPRINGS
INNER SPRING OUTER SPRING
APPLICATION
Color Part Number Color Part Number
1995-1997 "All Models" None Used Green F5DZ-7E485-A
1998-2001 "All Models" None Used No Color F8OZ-7E485-BA
AX4N, NEUTRAL-DRIVE ACCUMULATOR SPRINGS
INNER SPRING OUTER SPRING
APPLICATION
Color Part Number Color Part Number
1995 "All Models" None Used No Color F4DZ-7G300-A
1996-2001 "All Models" Brown F5OZ-7G301-A Green F5OZ-7G300-A
Copyright © 2002 ATSG
Figure 2
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Technical Service Information
AX4N, 1-2 ACCUMULATOR SPRING "SPECIFICATIONS"
COLOR OUTSIDE DIAMETER FREE LENGTH WIRE DIAMETER
No Color (Outer) 1.316" (33.43mm) 1.540" (39.12mm) .114" (2.90mm)
Purple (Outer) 1.507" (38.28mm) 1.389" (35.29mm) .121" (3.07mm)
No Color (Inner) 1.022" (25.96mm) .682" (17.32mm) .135" (3.43mm)
AX4N, 2-3 ACCUMULATOR SPRING "SPECIFICATIONS"
COLOR OUTSIDE DIAMETER FREE LENGTH WIRE DIAMETER
Orange (Outer) 1.310" (33.28mm) 1.222" (31.04mm) .110" (2.79mm)
AX4N, 3-4 ACCUMULATOR SPRING "SPECIFICATIONS"
COLOR OUTSIDE DIAMETER FREE LENGTH WIRE DIAMETER
Blue (Outer) 1.315" (33.40mm) 1.485" (37.72mm) .113" (2.87mm)
AX4N, NEUTRAL-REVERSE ACCUMULATOR SPRING "SPECIFICATIONS"
COLOR OUTSIDE DIAMETER FREE LENGTH WIRE DIAMETER
Green (Outer) .965" (24.52mm) 1.414" (35.92mm) .093" (2.37mm)
No Color (Outer) .958" (24.34mm) 1.402" (35.61mm) .092" (2.34mm)
AX4N, NEUTRAL-DRIVE ACCUMULATOR SPRING "SPECIFICATIONS"
COLOR OUTSIDE DIAMETER FREE LENGTH WIRE DIAMETER
No Color (Outer) 1.373" (34.87mm) 1.257" (31.93mm) .091" (2.31mm)
Brown (Inner) 1.164" (29.57mm) 1.200" (30.48mm) .084" (2.14mm)
Green (Outer) 1.472" (37.38mm) 1.219" (30.96mm) .102" (2.59mm)
Copyright © 2002 ATSG
Figure 3
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