Page 3265 of 4264

MANUAL TRANSMISSION 7B1-101
Clutch Hub Spline Play
Set a dial indicator to the clutch hub to be
measured.
226RS042
Move the clutch hub as far as possible to both the
right and the left.
Note the dial indicator reading.
If the measured value exceeds the specified limit,
the clutch hub must be replaced.
Clutch Hub Spline Play
Standard Limit
1st-2nd
3rd-4th 0 - 0.1 mm
(0 - 0.004 in) 0.2 mm
(0.008 in)
Rev. 5th 0 - 0.2 mm
(0 - 0.008 in) 0.3 mm
(0.012 in)
Ball Bearing Play
Use a dial indicator to measure the ball bearing play.
Ball Bearing Play
Limit: 0.2 mm (0.008 in)
226RS043
Reassembly
1. Install center roller bearing (29) to counter gear
shaft (30).
Apply engine oil to the bearing inner and outer
circumferences.
Install the roller bearing in the proper direction.
NOTE: Check that outer race moves only in the
direction of arrow.
226RS044
2. Install front roller bearing (28) by performing the
following steps.
Use bearing installer 5-8840-2194-0 to install the
front roller bearing inner race to the counter gear
shaft (30).
Install the outer race and roller assembly.
The snap ring groove must be facing the
transmission front side.
Page 3266 of 4264

7B1-102 MANUAL TRANSMISSION
Use bearing installer 5-8840-2194-0 to install the
ring.
226RS045
Legend
(1) Ring
(2) Outer Race and Roller Assembly
(3) Inner Race
3. Install bearing snap ring (27) to counter gear shaft
(30).
4. Apply engine oil to the needle bearing (25) and the
2nd gear (24) thrust surfaces.
Install the needle bearing (25) and the 2nd gear (24)
to the mainshaft (26).
The 2nd gear (24) dog teeth must be facing the
transmission rear side.
226RS046
5. Assemble 2nd inside ring (23), 2nd outside ring (22),
and 2nd block ring (21).
Apply engine oil to the synchronizer ring friction
surfaces.
226RS047
Legend
(1) Block Ring
(2) Outside Ring
(3) Inside Ring
(4) 2nd Gear
(5) Needle Bearing
6. Assemble 1st-2nd synchronizer assembly (20) by
performing the following steps:
1. Check that the inserts (3) fit snugly into the
clutch hub (5) insert grooves.
2. Check that the inserts springs (4) are fitted to
the inserts as shown in the illustration.
3. Check that the clutch hub (5) and the sleeve (6)
slide smoothly.
Page 3267 of 4264
MANUAL TRANSMISSION 7B1-103
266RS049
7. Install the synchronizer assembly (20) to the
mainshaft (26).
The clutch hub face (with the heavy boss) must be
facing the 2nd gear side.
226RS048
8. Install clutch hub snap ring(19) by performing the
following steps:
Select the snap ring which will provide the
minimum clearance between the 1st-2nd clutch
hub and the snap ring.
226RS050
There are three snap ring sizes available.
The snap rings are color coded to indicate their
thickness as shown in the figure.
226RS021
Clutch Hub and Snap Ring Clearance
Standard: 0 - 0.1 mm (0 - 0.004 in)
Snap Ring Availability
Thickness Color Coding
1.80 mm (0.071 in) White
1.85 mm (0.073 in) Yellow
1.90 mm (0.075 in) Blue
Use a pair of snap ring pliers to install the snap
ring (19) to the mainshaft (26).
The snap ring must be fully inserted into the
mainshaft snap ring groove.
Page 3268 of 4264
7B1-104 MANUAL TRANSMISSION
226RS031
9. Install needle bearing (18), 1st block ring (17), 1st
outside ring (16), 1st inside ring (15), and 1st gear
(14).
Apply engine oil to the needle bearing, 1st gear
thrust surfaces and synchronizer ring friction
surfaces.
The 1st gear dog teeth must be facing the
transmission front side.
226RS053
Legend
(1) 1st Gear
(2) Needle Bearing
(3) Inside Ring
(4) Outside Ring
(5) Block Ring
10. Install the 1st gear thrust bearing and the race(13) to
the main shaft.
The thrust bearing side must be facing the
transmission front side.
226RS054
11. Apply engine oil to the mainshaft ball bearing (12)
and the mainshaft (26).
Install the ball bearing (12) and needle bearing collar
(11) to the mainshaft (26).
The ball bearing snap ring groove must be facing
the transmission rear side.
Use a bench press and installer 9-8522-1165-0 to
slowly force the collar into place.
226RS055
Page 3269 of 4264

MANUAL TRANSMISSION 7B1-105
12. Apply engine oil to the needle bearing (10) and the
3rd gear (9) thrust surfaces.
Install the needle bearing (10) and the 3rd gear (9)
to the mainshaft.
The 3rd gear dog teeth must be facing the
transmission front side.
226RS056
13. Install 3rd block ring (8).
14. Check and install 3rd-4th synchronizer assembly (7)
by the following steps:
1. Check that the inserts (3) fit snugly into the
clutch hub insert grooves.
2. Check that the insert springs (4) are fitted to the
inserts as shown in the illustration.
3. Check that the clutch hub (5) and the sleeve (6)
slide smoothly.
4. Install the synchronizer assembly to the
mainshaft.
The clutch hub face with the heavy boss must be
facing the 3rd gear side.
226RW221
226RS049
15. Select and install mainshaft snap ring(6) in the
following way:
Select the snap ring which will provide the minimum
clearance between the 3rd-4th clutch hub and the
snap ring.
226RS058
There are three snap ring sizes available.
The snap rings are color coded to indicate their
thickness as shown in the figure.
Page 3270 of 4264
7B1-106 MANUAL TRANSMISSION
226RS021
Clutch Hub and Snap Ring Clearance
Standard: 0 - 0.1 mm (0 - 0.004 in)
Snap Ring Availability
Thickness Color Coding
1.80 mm (0.071 in) White
1.85 mm (0.073 in) Yellow
1.90 mm (0.075 in) Blue
Use a pair of snap ring pliers to install the snap
ring to the mainshaft.
The snap ring must be fully inserted into the
mainshaft snap ring groove.
16. Install top block ring (5).
Apply grease to the needle bearing (4) inner and
outer circumferences and install needle bearing (4)
in the top gear shaft (2).
17. Use a bench press to install the top gear shaft ball
bearing (3) to the top gear shaft (2).
226RS059
The snap ring groove of the ball bearing (3) must be
facing the transmission front side.
18. Use a pair of snap ring pliers to install the top gear
shaft snap ring (1) to the top gear shaft (2).
Page 3271 of 4264
MANUAL TRANSMISSION 7B1-107
Main Data and Specifications
General Specifications
MUA5G MUA5S
Transmission type Fully synchronized forward and reverse gears
Control method Remote control with the gear shift lever on the floor.
Gear ratio: Transmission 1st 4.008 4.357
2nd 2.301 2.502
3rd 1.427 1.501
4th 1.000 1.000
5th 0.828 0.809
Rev. 3.651 3.970
Transmission oil capacity 2.95 lit. (3.12 US qt)
Type of lubricant Engine oil: Refer to the chart in "SECTION 0"
Page 3272 of 4264
7B1-108 MANUAL TRANSMISSION
Torque Specifications
RTW47BLF001101
About arrow mark, refer to Transmission (MUA) Installation in this section.