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  • Internal leakage
  • Loss of lubrication oil to planetaries
  • No cooler flow
  • Delayed Forward


The turbine seal ring wears on the soft aluminum channel casting surface.


This hardened and ground steel sleeve salvages worn channel plates.


Repair Sleeve
Part No. 96803

Channel Plate, Hardened & Ground

Package Quantity: 5

View Instructions

The cast iron sealing ring on the Ford AXOD & E, AX4S, AX4N AND 4F50N turbine shaft frequently wears the mating surface on the aluminum channel plate. The resulting internal leakage diminishes cooler/lube flow, which contributes to common overdrive planetary failure. Hypoeutectic aluminum castings have insufficient silicon content to withstand the erosive wear of ductile iron. Sonnax has made available a hardened and ground steel sleeve 96803 to salvage worn channel plates.

  • Hardened and ground steel sleeve is more wear-resistant than OE.
  • Salvages worn channel plates.

September 30, 2005

Anatomy of a Transmission: Oil Flow in the Pump-PR-Converter-Cooler Lube Circuits

Gregg Nader

Topics: Diagnostics And Theory Transmission

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  • 96803 combo
  • 96803