Isuzu Amigo / Axiom / Trooper / Rodeo / VehiCross. Manual — part 1601
7B–40
MANUAL TRANSMISSION
7. 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.
8. Install the new mainshaft hub nut.
Use the mainshaft nut wrench J–37219 to tighten the
mainshaft nut(23) to the specified torque.
Torque: 137 N·m (101 lb ft)
226RS016
9. Use a punch to stake the mainshaft nut.
226RW153
10. Install needle bearing(22), 5th block ring(21), and 5th
gear(20).
11. Apply engine oil to the counter reverse gear(19) and
the reverse gear(26).
Install the counter reverse gear(19) to the counter
shaft.
The reverse gear projection must be facing the
intermediate plate.
226RW151
MANUAL TRANSMISSION
7B–41
12. Install the counter 5th gear(18) to the transmission.
226RS019
13. Install ball bearing(17) and bearing snap ring by
performing the following steps:
D
Select the snap ring which will provide the minimum
clearance between the ball bearing and the snap
ring.
226RS020
D
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
D
Use a pair of snap ring pliers to install the snap
ring(16) to the counter gear shaft.
The snap ring must be fully inserted into the counter
gear shaft snap ring groove.
14. Assemble reverse idler shaft(15), reverse idler
gear(14), thrust washer(13), and idle shaft pin(12)
into reverse idler gear assembly(11).
7B–42
MANUAL TRANSMISSION
15. Select reverse idler gear snap ring(10) which will
provide the minimum clearance between the
intermediate plate(30) and the snap ring(10).
226RS022
D
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
D
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.
16. Install thrust washer and lock ball(9) by performing
the following steps:
D
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)
D
Measure clearance “A” as shown in the figure.
226RS023
D
Select appropriate thrust washer from chart.
D
There are four thrust washer sizes available.
D
The thrust washers are color coded to indicate their
thickness.
MANUAL TRANSMISSION
7B–43
Thrust Washer Availability
Thickness
mm (in)
Color
Coding
A 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)
Yellow
8.1–8.2
(0.319–0.323)
0.1–0.25
(0.004–0.010)
8.1 (0.319)
Green
8.2–8.3
(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)
226RS024
D
Apply grease to the thrust washer and the lock ball.
D
Install the thrust washer and the lock ball.
17. Install thrust plate(8) and retainer(7).
18. Install retaining snap ring(6), clip(5), speedometer
drive gear(4), and bearing snap ring(3). (4X2)
19. Use the installer J–37223 to install the ball bearing(2)
to the mainshaft. (4X2)
226RS096
20. Install bearing snap ring(1). (4X2)
21. Apply engine oil to the bearing inner and outer
circumference. (4X4)
Use the installer J–37223 to install the ball bearing(2)
to the mainshaft in proper direction. (4X4)
226RS025
22. Install oil seal collar(1). (4X4)
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