Page 3249 of 4264
MANUAL TRANSMISSION 7B1-85
Reverse Gear and 5th Gear
Disassembled View
226R300024
Legend
(1) Collar Snap Ring (15) Counter 5th Gear
(2) Oil Seal Collar (16) Counter Reverse Gear
(3) Ball Bearing (17) 5th Gear
(4) Retainer (18) 5th Block Ring
(5) Thrust Plate (19) Needle Bearing
(6) Thrust Washer and Lock Ball (20) Mainshaft Nut
(7) Reverse Idler Gear Snap Ring (21) Rev-5th Synchronizer Assembly
(8) Reverse Idler Gear Assembly (22) Reverse Block Ring
(9) Idle Shaft Pin (23) Reverse Gear
(10) Thrust Washer (24) Needle Baring
(11) Reverse Idler Gear (25) Bearing Plate and Screw
(12) Reverse Idler Shaft (26) Bearing Snap Ring
(13) Bearing Snap Ring (27) Intermediate Plate
(14) Ball Bearing
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7B1-86 MANUAL TRANSMISSION
Disassembly
1. Use a pair of snap ring pliers to remove the collar
snap ring (1).
2. Set the retaining ring remover 5-8840-2158-0 and
puller 5-8840-2027-0 to the retainer (4) and the
mainshaft end.
262RW079
3. Remove the retainer (4) together with the bearing
(3) and the oil seal collar (2).
The universal puller may be used in place of the
retaining ring remover.
4. Remove thrust plate (5) and thrust washer and lock
ball (6).
5. Use a pair of snap ring pliers to remove reverse idler
gear snap ring (7).
226RS004
6. Remove the reverse idler gear assembly (8) from
the intermediate plate (27).
226RS005
7. Remove idle shaft pin (9), thrust washer (10),
reverse idler gear (11), and reverse idler shaft (12).
8. Use a pair of snap ring pliers to remove the snap
ring (13).
9. Attach a universal puller to the counter gear shaft.
Use a universal puller to remove the ball bearing
(14) and the counter 5th gear (15).
226RS006
10. Remove counter reverse gear (16).
Page 3251 of 4264
MANUAL TRANSMISSION 7B1-87
11. Remove 5th gear (17), 5th block ring (18), and
needle bearing (2 piece type) (19).
226RS007
12. Remove the mainshaft nut (20) according to
following steps.
Attach the holding fixture 5-8840-2160-0 and base
5-8840-0003-0 to the mainshaft and the counter
gear.
226RW212
Engage the 3rd-4th synchronizer with the 3rd
gear.
Engage the 1st-2nd synchronizer with the 1st
gear.
226RW210
Use the mainshaft nut wrench 5-8840-2156-0 to
remove the mainshaft nut (20).
226RW211
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7B1-88 MANUAL TRANSMISSION
13. Use screw drivers between the reverse gear (23)
and bearing plate (25) to remove the Rev-5th
synchronizer assembly (21) together with reverse
block ring (22) and reverse gear (23).
226RS010
14. Remove needle bearing (24).
15. Use the torx bit wrench (T45) 5-8840-0047-0 to
remove the bearing plate and screw(25) from the
intermediate plate.
220RW137
16. Use the snap ring pliers (1) to remove the mainshaft
bearing snap ring (2) (26).
226RS011
17. Hold the snap ring open with the pliers.
Push the intermediate plate (27) toward the rear of
the transmission to remove it.
The bearing snap ring will come free.
Inspection and Repair
Refer to Top Gear Shaft, Main Gear Shaft, and Counter
Gear in this section for inspection and repair.
Reassembly
1. Mesh the counter gear with the mainshaft assembly.
Set the holding fixture 5-8840-2160-0 to the
mainshaft and the counter gear and then install it on
the base 5-8840-0003-0.
Install the intermediate plate (27) on the gear
assembly.
226RW212
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MANUAL TRANSMISSION 7B1-89
2. Install bearing snap ring (26).
3. Apply recommended thread locking agents
(LOCTITE 242) or its equivalent to each of the
bearing plate screw threads.
Install bearing plate and screw (25).
Tighten the screws to the specified torque by using
torx bit wrench 5-8840-0047-0.
Torque: 15 N
m (1.5 kg
m/11 lb
ft)
220RW137
4. Install needle bearing (24), reverse gear (23), and
reverse block ring (22). 5. Assemble rev-5th synchronizer assembly (21) by
performing the following steps.
1. Turn the clutch hub face (1) toward the sleeve
groove (2) (rear side) on the outer
circumference.
2. Check that the inserts (3) fit snugly into the
clutch hub (5) ring insert grooves.
3. Check that the inserts springs (4) are fitted to
the inserts as shown in the illustration.
4. Check that the clutch hub (5) and the sleeve (6)
slide smoothly.
5. Install the synchronizer assembly (21) to the
mainshaft.
The clutch hub face with the heavy boss must be
facing the reverse gear side.
226RS013
226RS049
Page 3254 of 4264
7B1-90 MANUAL TRANSMISSION
6. Mesh the 1st-2nd and 3rd-4th synchronizers with
both the 1st and 3rd gears (double engagement).
226RS015
This will prevent the mainshaft from turning.
7. Install the new mainshaft hub nut.
Use the mainshaft nut wrench 5-8840-2156-0 to
tighten the mainshaft nut (20) to the specified
torque.
Torque: 137 N
m (14 kg
m/101 lb
ft)
226RW214
8. Use a punch to stake the mainshaft nut (20).
226RW153
9. Install needle bearing (19), 5th block ring (18), and
5th gear (17).
10. Apply engine oil to the counter reverse gear (16) and
the reverse gear (23).
Install the counter reverse gear (16) to the counter
shaft.
The reverse gear projection must be facing the
intermediate plate.
226RW151
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MANUAL TRANSMISSION 7B1-91
11. Install the counter 5th gear (15) to the counter shaft.
226RS019
12. Install ball bearing (14) and bearing snap ring (13)
by performing the following steps:
Select the snap ring which will provide the
minimum clearance between the ball bearing
and the snap ring.
226RS020
There are six snap ring sizes available.
The snap rings are color‐coded to indicate
their thickness.
226RS021
Ball Bearing and Snap Ring Clearance
Standard: 0 - 0.15 mm (0 - 0.0059 in)
Snap Ring Availability
Thickness Color Coding
1.1 mm (0.043 in) White
1.2 mm (0.047 in) Yellow
1.3 mm (0.051 in) Blue
1.4 mm (0.055 in) Pink
1.5 mm (0.059 in) Green
1.6 mm (0.063 in) Brown
Use a pair of snap ring pliers to install the snap
ring(13) to the counter gear shaft.
The snap ring must be fully inserted into the
counter gear shaft snap ring groove.
13. Assemble reverse idler shaft (12), reverse idler gear
(11), thrust washer (10), and idle shaft pin (9) into
reverse idler gear assembly (8).
The trust washer should be assembled as oil groove
faces to gear side.
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7B1-92 MANUAL TRANSMISSION
14. Select reverse idler gear snap ring (7) which will
provide the minimum clearance between the
intermediate plate (27) and the snap ring (7).
226RS022
There are three snap ring sizes available.
The snap rings are color-coded to indicate their
thickness.
Intermediate Plate and Snap Ring Clearance
Standard: 0 - 0.15 mm (0 - 0.0059 in)
Snap Ring Availability
Thickness Color Coding
1.2 mm (0.047 in) White
1.3 mm (0.051 in) Yellow
1.4 mm (0.055 in) Blue
226RS021
Use a pair of snap ring pliers to install the snap
ring to the reverse idler shaft.
The snap ring must be fully inserted into the
reverse idler shaft snap ring groove.
15. Install thrust washer and lock ball (6) by performing
the following steps:
Use a thickness gauge to measure the
clearance between the 5th gear and the thrust
washer.
5th Gear and Thrust Washer Clearance
Standard: 0.10 - 0.25 mm (0.004 - 0.010 in))
Measure clearance "A" as shown in the figure.
226RS023
Select appropriate thrust washer from chart.
There are four thrust washer sizes available.
Thrust Washer Availability
Thickness
mm (in) Color
CodingA mm (in) Clearance
mm (in)
7.9 (0.311) White 8.05 - 8.1
(0.317-0.319) 0.15 - 0.25
(0.006-0.010)
8.0 (0.315) Yellow8.1 - 8.2
(0.319-0.323) 0.1 - 0.25
(0.004-0.010)
8.1 (0.319) Green8.2 - 8.3
(0.323-0.327) 0.1 - 0.25
(0.004-0.010)
8.2 (0.323) Blue 8.3 - 8.36
(0.327-0.329) 0.1 - 0.21
(0.004-0.008)
The thrust washers are color coded to indicate
their thickness as shown in the figure.