Leaking valve end plugs in pre mid-'83 units, or worn 3-4 shift valve and sleeve in mid-'83 and later units.
Replace worn, leaking valve end plugs with Sonnax O-ringed end plugs. Manufactured from high-quality aluminum, these end plugs are to resistant to wear.
Vehicles with a Ford AOD transmission often have shift timing complaints due to governor or accumulator oil circuit leakage caused by leaking valve end plugs in the valve body. Most AOD valve assemblies are designed with an end plug to help retain the line-up and seal the circuitry. As these end plugs wear, circuit oil is lost and affects shift timing. Installing Sonnax O-ringed end plug kit 76999-MED can eliminate this excessive leakage.
Replacement plugs are included for the following valve applications: 1-2 shift, 2-3 shift and 3-4 shift (plug or sleeve).
November 24, 2015
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Contact a Sonnax Parts Distributor.