Article 2018 - C4 Automatic Transmission - Manual Valve Retaining Ring

TSB #128 - December 5, 1969
(All 1970 Vehicles So Equipped Except Falcon)


A True-Arc retaining ring is installed on all manual valves to hold the valve while in transit as of October 1, 1969, replacing the previously bolted-on clip. The True-Arc retainer has no affect on the operation of the valve. When cleaning the main control, remove the True-Arc ring before sliding the manual valve from its bore and discard. This True-Arc Ring is located behind the second spool of the valve as shown in Figure 4.

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PRODUCTION CHANGE: October 1, 1969
WARRANTY STATUS: INFORMATION ONLY

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