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Driveline - Torsional Vibration After TCC Apply|Page 4200 > < A/T - Multiple Driveability Concerns|Page 4195
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Torque Converter: Customer Interest
Driveline - Torsional Vibration After TCC Apply

Number:

87-143

Section:

7A

Date:

May, 1987

Subject:

TORSIONAL VIBRATION AFTER TCC APPLY

Model and Year:

1984-1987 T TRUCKS WITH 2.8L ENGINES AND THM 700-R4 AUTOMATIC

TRANSMISSIONS

TRANSMISSION MODELS:

7TAM, 7TBM

BULLETIN COVERS:

A new torque converter with a 215 lb.ft. pressure plate will reduce driveline torsional vibration on 1984-1987 T trucks in third gear that may begin
around 22 mph - 25 mph after the torque converter clutch (TCC) applies and may continue up to approximately 50 mph.

Figure No. 1 - THM 700-R4 TRANSMISSION IDENTIFICATION INFORMATION

Figure No. 2 TYPICAL CONVERTER

Driveline - Torsional Vibration After TCC Apply|Page 4200 > < A/T - Multiple Driveability Concerns|Page 4195