Previa Van 4WD L4-148.8 2438cc 2.4L DOHC (2TZ-FE) (1991)
Accessory Shaft: All Technical Service Bulletins
Engine - Accessory Drive Shaft Knocking Noise
REF.: ENGINE
NO.: EN91-008
DATE:
JUNE 28, 1991
MODEL: AC
SADS EQUIPMENT DRIVE SHAFT
To reduce knocking noise from the rear coupling of the SADS shaft, the centering pin, ball and seat clearance has been reduced as shown:
DIAGNOSIS:
SADS knocking noise is similar to engine knocking noise. To confirm SADS knocking noise:
1. Remove original SADS shaft
2. Set parking brake
3. Apply the brake pedal
4. Transmission in Drive Range
5. Increase the engine speed to 2000 - 2200 RPM no longer than 5 seconds*
6. If knocking noise is eliminated, replace SADS shaft.
DO NOT REPEAT THIS TEST MORE THAN THREE TIMES.
*
Caution - The radiator cooling fan does not operate when the SADS shaft is removed. Do not over-heat the engine.
PRODUCTION EFFECTIVE:
FROM VIN
PRODUCTION DATE
JT3AC1*R*M0068317 (2WD)
4/91
JT3AC2*S*M0012892 (4WD)
4/91
PART NUMBER INFORMATION:
PREVIOUS PART NO.
NEW PART NO.
PART NAME
37910-28010
Same
Shaft Assy., Equipment Drive
Note:
All current parts inventory is new style.