Corolla/FX L4-1587cc 4A SOHC (1984)
Clutch Disc: All Technical Service Bulletins
Clutch - Disc Modified to Reduce Noise
TRANSMISSION
REFERENCE
AND CLUTCH
NUMBER
021
DATE
5-18-84
MODEL
AE82/83
To reduce clutch resonance noise during take-off, the clutch disc cushioning characteristics have been changed. Consequently, the clutch master cylinder
and the clutch pedal freeplay specification have also been changed.
Clutch Disc
Clutch Disc
The cushioning stroke has been increased.
Clutch Master Cylinder
Clutch Master Cylinder
The dimension "A" has been decreased from 2.35 mm (0.092 in.) to 1.35 mm (0.053 in..) as shown below.
Clutch Pedal Freeplay
Due to the dimensional change of the clutch master cylinder, the clutch pedal freeplay specification has been decreased from 13-23 mm (0.51-0.91 in.) to
7-17 mm (0.28-0.67 in.).
PRODUCTION EFFECTIVE:
From Frame Number
Production Date
JT2AE82**E3063346
February 1984
PART NUMBER INFORMATION:
Previous Part Number
New Part Number
Part Name
31250-12142
31250-12143
Disc assy, clutch (for AE82)
31410-12120
31410-12121
Cylinder assy, master
04311-12030
04311-32010
Cylinder kit, master
The new parts are interchangeable with the previous parts.
