M/T - Production Changes
REFERENCE TRANSMISSION AND CLUTCHNUMBER 002
DATE 1-28-83
MODEL AL12
Needle Roller Bearing:
This bulletin has been prepared to advise you of changes made to the Tercel 4-speed (Z-41) and 5-speed (Z-51) manual transmissions.
1. The reverse gear ratio has been changed from 3.408 to 3.418.
2. The outside diameter of the rear bearing for the counter shaft has been changed from 56 mm (2.205 in.) to 60 mm (2.362 in.).
3. The needle roller bearing for the counter 5th gear has been changed from a one-piece design to a two-piece design.
Shift Detent Mechanism:
4. A shift detent mechanism has been employed on the reverse gear shift fork.
5. The transmission number has been relocated from the extension housing to the transmission case.
PRODUCTION EFFECTIVE:
Items 1, 4 Reverse Gear Ratio and Shift Detent Mechanism
From Transmission Number Transmission Production Date
20407852 April 1982
From Frame Number
JT2AL12**C*430191 April 1982
Items 2, 3, 5 Counter Shaft Bearing, Counter Fifth Gear Bearing, Transmission Number
From Transmission Number Transmission Production Date
20402852 April 1982
From Frame Number
JT2AL12**C*420500 April 1982
PART NUMBER INFORMATION:
Previous Part Number New Part Number Part Name
* 33331-16011 33331-16020 Gear, reverse
* 33339-16012 33339-16020 Gear, idler
* 33402-16011 33402-16020 Gear, sub-assy, reverse idler
33421-16012 33421-16013 Gear, counter
33421-16021 33421-16022 Gear, counter
33421-16030 33421-16040 Gear, counter
** 33101-16012 33101-16020 Case sub-assy, transmission
** 90363-22002 90363-22005 Bearing, radial ball
(for Counter Gear, rear)
** 90520-53001 90520-57001 Ring, shaft snap
(for Counter Gear, rear bearing)
90364-24001 90364-24003 Bearing, needle roller
(for Counter Fifth Gear)
Previous Part Number New Part Number Part Name
*** 33211-16010 33211-16020 Fork, reverse shift
*** 33242-16012 33242-16020 Shaft, gear shift fork, No. 1
*** 90360-08009 Unchanged Ball, shift detent
(changed from 3 to 4 per unit)
*** New 90501-10052 Spring, compression
(14.6 mm/0.575 in., for Shift Detent Ball)
NOTE: Interchangeable as a set of similar asterisks only. No asterisk indicates part is interchangeable separately.