Mustang Cobra V8-281 4.6L DOHC VIN V MFI (1997)
Accumulator: Service and Repair
Installation
NOTE:
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To service the 1-2 or 2-3 accumulators or the overdrive or reverse servo assemblies use the following procedure:
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This is not an ordinary installation procedure and does not compensate for band wear.
1. Install reverse band servo spring, reverse band servo piston and rod. When piston and rod assembly replacement becomes necessary, or when the
reverse band has been replaced, determine the correct length of the reverse servo piston and rod, proceed as follows:
a. Lubricate the reverse piston seal to facilitate assembly and to prevent damage to the seal.
b. Install the reverse servo piston and return spring. Do not install the piston cover or retaining ring.
c. Install Servo Piston Selection Tool T80L-77030-A. Tighten the band apply bolt on Servo Piston Selection Tool T80L-77030-A to 5.6 Nm (49
inch lbs.).
d. Attach Dial Indicator with Bracketry TOOL-4201-C or equivalent and position the indicator stem on the flat portion of the piston. Zero the dial
indicator.
e. Thread the bolt out of the selector tool until the piston stops against the bottom of the tool.
f.
Read the amount of piston travel on the dial indicator.
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If the travel is 2.845-6.020 mm (0.112-0.237 inch), the piston length is within specification.
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If the travel is not within specification selective pistons are available in the following lengths:
74.56 mm (2.936 inch) 1 groove
75.92 mm (2.989 inch) 2 groove
77.29 mm (3.043 inch) 3 groove
NOTE: Length of rod measured from piston surface to end of rod.
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Select the proper rod to bring the servo piston travel within specification.
g. Lubricate the cover seal to facilitate assembly and to prevent damage to the seal.
h. Remove the servo selection tool and dial indicator.
2. Install Servo Piston Remover/Replacer T92P-70023-A to transmission case.