Symptoms:

3-4 Flare
Burnt OD band
Worn OD servo pin bore in case

Cause:

Severe wear of the case at the servo apply pin bore due to continuous pin oscillation can result in burned clutches, shift complaints and destroyed cases.

Correction:

Sonnax servo pin bore sleeve is made from highly wear-resistant aluminum and allows the case to be refurbished to provide proper clearance with the servo apply pins.

Warning:

Required tool kit S-96872-TL is no longer in production. Check with your distributor for availability.

4F50N, AX4N, AX4S, AXOD, AXODE

Servo Pin Bore Sleeve
Part No. 96872-01K

Tooling:

S-96872-TL
SERVO-FIX

View Instructions Find a Distributor

In listed Ford units, severe wear in the case at the servo apply pin bore can result in burned clutches, shift complaints and destroyed cases. Reconditioning the bore and installing Sonnax servo pin bore sleeve 96872-01K provides proper clearance with the servo apply pins and allows the expensive case to be salvaged.

Tool kit pilot and reamer align with pin bore centerline, not servo piston bore
Highly wear-resistant aluminum sleeve refurbishes case bores
Allows expensive case salvage