5B
Countershaft Assembly Disassembly and Reassembly
Reference: Input Shaft, Countershaft and Output Shaft Components:M13A Model
Disassembly
1) Remove countershaft rear bearing (1) using bearing puller, special tool and press.
Special Tool
(A) : 09913–85230
2) Remove countershaft snap ring and then drive out countershaft front bearing (2), low gear needle bearing, and 1st gear (1) from countershaft using bearing puller, special tool and press.
CAUTION:
To avoid gear teeth from being damaged, support gear with flat side of bearing puller when removing gear using bearing puller.
Special Tool
(A) : 09913–85230
3) Remove 1st gear synchronizer ring.
4) Remove circlip and then drive out low speed synchronizer assembly (2), 2nd gear needle bearing and 2nd gear (1) from countershaft using bearing puller and press.
Reassembly
Reference: Countershaft Assembly Inspection:M13A Model
1) Clean all components thoroughly, inspect them for any abnormality and replace with new ones as necessary.
2) To ensure lubrication, air blow oil holes (1) and make sure that they are free from any obstruction.
3) Drive in countershaft rear bearing (1) using special tool and press.
Special Tool
(A) : 09925–98221
4) Apply oil to 2nd gear needle bearing, and then install 2nd gear needle bearing and 2nd gear.
5) Assemble low speed synchronizer sleeve (4) and hub (3) as follows.
a) Fit low speed synchronizer sleeve to hub in specified direction as shown in figure.
b) Insert 3 keys (2) to hub.
c) Set springs (1) at specified position as shown in figure.
Synchronizer key installation position
: A = B
[A]: 1st gear side 5. 2nd gear
C: Key way 6. 1st gear
D: Chamfered side      
6) Install 2nd gear synchronizer ring.
7) Drive in low speed synchronizer assembly (1) using special tool and press, and then install circlip.
NOTE:
• While press-fitting sleeve & hub, make sure that synchronizer ring key slots (2) are aligned with keys (3) in sleeve & hub assembly.
• Check free rotation of 2nd gear (4) after press-fitting sleeve & hub assembly.
Special Tool
(A) : 09940–51710
8) Install low gear needle bearing, 1st gear synchronizer ring and 1st gear (2) to countershaft.
9) Press-fit countershaft front bearing (1) using special tool and press and then install circlip.
Special Tool
(A) : 09913–84510