A/T - A4LD Erratic Shifting/Fluid Leakage

SIL 87-7 (Mar)

SUBJECT: A4LD

PROBLEM:
Erratic shifting, due to transmission case counterbore wear.

Slipping during upshifts and/or fluid leakage at the transmission vent assembly may be caused by governor seal ring wear, or transmission case wear (counterbore area), allowing internal leakage past the transmission governor.

If the seal rings and transmission case need to be replaced because of this wear, new viton rubber seals (E7TZ-7D011-A) should be used.

These new seal rings are available as a separate service part.

If the original transmission case is used, the cast iron seal rings (D4ZZ-7D011-B) should be installed.

Note
Use of Viton rubber seals in a worn, or grooved transmission case (counterbore area) will result in a recurrence of leakage past the governor.