A/T - 440T4 Converter Clutch Shudder On Apply
TSB: 85-19SUBJECT: 440-T4
COMPLAINT:
Converter clutch shudder on apply and during acceleration.
CAUSE:
The cause may be a rolled seal on the converter clutch accumulator piston.
CORRECTION:
After inspection of the vacuum system and correction of any problems there, if the shudder still exists, then the unit will have to be removed and torn down to gain access to the accumulator piston. Install the new seal and piston. Install the new seal and piston provided in kit # 8646926. Units built after Julian date 174 on the transmission tag already contain the new seal and piston.