Isuzu N-Series. Manual — part 858
MANUAL TRANSMISSION 7B-93
Control Box
Components
Disassembly
1. Remove the neutral switch (1) and detent (2).
Legend
1. Shift lever shaft
11. Select internal lever
2. Shift lever shaft oil seal
12. Spring pin; Select internal lever
3. Spring
13. Stopper ring
4. Washer
14. Spring pin; Stopper ring
5. Shift internal lever
15. Spring pin; Shift lever shaft
6. Spring sheet
16. Neutral switch
7. Spring
17. Select lever shaft oil seal
8. Pipe
18. Washer
9. Control box
19. Select external lever
10. Detent
1
2
3
4
5
6
7
8
9
10
11
13
12
14
15
16
17
18
19
N7A0406E
7B-94 MANUAL TRANSMISSION
2. Remove the spring pin; select internal lever (4) us-
ing the spring pin remover, and then remove the
select internal lever (3), select external lever (1)
and washer (2).
3. Remove the spring pin; stopper ring (8) and the
spring pin; shift lever shaft (9).
4. Pull out the shift lever shaft (1), and remove the
stopper ring (7), spring (6), spring sheet (5), shift
internal lever (4), washer (3) and spring (2).
5. Pry and remove with a driver the select lever shaft
oil seal and shift lever shaft oil seal from the control
box.
If any wear, damage or other abnormality is found
on the disassembled parts, repair or replace them.
6. Inspect wear of the shift shaft, free play of the con-
trol box and roughness of the manipulation. If any
abnormality is found, replace the part.
Assembly
1. Using the installer 5-8840-2245-0 for the control
box, install the shift lever shaft oil seal and select
lever shaft oil seal.
2
1
N7A0407E
N7A0408E
3
4
2
1
N7A0409E
1
8
9
2
3
4
5
6
7
N7A0410E
MANUAL TRANSMISSION 7B-95
2. Assemble the spring (2), washer (3), shift internal
lever (4), spring sheet (5), spring (6) and stopper
ring (7) to the control box. Insert the shift lever shaft
(1). Align the pin hole of the shift lever shaft with the
pin hole of the stopper ring, and then drive in a new
spring pin; stopper ring (8) and spring pin; shift le-
ver shaft (9).
3. Insert the select external lever (1) and washer (2)
into the control box. Install the select internal lever
(3), and then drive in a new spring pin; select inter-
nal lever (4).
4. Install the detent (2).
• The detent contains pre-coating agent. Re-
move completely the seal agent on the screw of
the case side before using new detent.
Tighten:
Detent (2) to 28 N
⋅m (2.9 kg⋅m / 21 lb⋅ft)
5. Fix the neutral switch (1) to the specified torque.
Tighten:
Neutral switch (1) to 34 N
⋅m (3.5 kg⋅m / 25 lb⋅ft)
5-8840-2245-0
N7A0411E
1
8
9
2
3
4
5
6
7
N7A0410E
3
4
2
1
N7A0409E
2
1
N7A0407E
7B-96 MANUAL TRANSMISSION
Specifications
Fixing Torque
Transmission Type
MYY6P
MYY5T
Control System
Floor Remote Control
Floor Remote Control
Gear Ratio
Transmission
1st
5.979
5.315
2nd
3.434
3.053
3rd
1.862
1.655
4th
1.297
1
5th
1
0.721
6th
0.774
—
Reverse
5.701
5.068
Oil Capacity
L (US qt / Imp qt) Standard
3.5 (3.7 / 3.1)
2.8 (3.0 / 2.5)
4
× 4 Vehicle
—
3.5 (3.7 / 3.1)
With Front PTO
—
5.5 — 6.0 (5.8 — 6.3 / 4.8
— 5.3)
With Side PTO
3.8 (4.0 / 3.3)
3.1 (3.3 / 2.7)
With Side PTO
(4
× 4 Vehicle)
—
3.8 (4.0 / 3.3)
Oil
Besco Transaxle Oil 5W-30
N7A0412E
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