Isuzu N-Series. Manual — part 961
7B-80 Automatic Transmission (Smoother)
9. Install the 4th — 5th and 6th shift rod (1) on the 4th
— 5th shift arm (3), 1st — Reverse and 6th shift
block (2).
• Use a hammer to drive the spring pin (4) into
the spring pin hole.
• When press-fitting spring pins, insert a round
bar on the opposite side of the shift rod, and
press-fit while taking care to avoid damage to
other parts.
10. Apply Three Bond TB1215 to the mating surface of
the transmission case and clutch housing, and
install to the clutch housing.
• Before applying the Three Bond, remove all
moisture and oil from the contact surface. Use
a bead diameter of at least 2mm across the
entire surface, ensuring there are no gaps.
Tighten:
46 N
⋅m (4.7 kg⋅m / 33.9 lb⋅ft)
N7A1166E
N7A1167E
Automatic Transmission (Smoother) 7B-81
11. Install the bearing rear outer race in the
transmission case.
12. Remove the 4th — 5th and 6th shift rod snap ring.
Caution:
If the spring pin is deformed or damaged, replace it with
a new one and check to make sure it is installed
securely.
13. Install counter shims.
a. Set the gear position to neutral.
b. Position the transmission assembly so the
clutch housing is downwards.
c. Rotate the counter shaft at least 30 turns to
make the taper roller bearing seated.
d. Select the counter shim.
• At 120-degree intervals, take
measurements at three points at a depth
from the transmission case back surface up
to the counter shaft rear bearing outer ring
surface, and then calculate the average of
the measured values.
• Use the table below to select the shim
thickness to match the measured average
value.
N7A1113E
N7A1145E
Measured Value (mm)
Shim Thickness (mm)
From — To
3.34 — 3.40
3.19
3.28 — 3.34
3.13
3.22 — 3.28
3.07
3.16 — 3.22
3.01
3.10 — 3.16
2.95
3.04 — 3.10
2.89
2.98 — 3.04
2.83
2.92 — 2.98
2.77
2.86 — 2.92
2.71
2.80 — 2.86
2.65
2.74 — 2.80
2.59
2.68 — 2.74
2.53
2.62 — 2.68
2.47
2.56 — 2.62
2.41
2.50 — 2.56
2.35
2.44 — 2.50
2.29
2.38 — 2.44
2.23
N7A1115E
7B-82 Automatic Transmission (Smoother)
14. Install the rear outer snap ring in the main shaft
rear bearing.
15. Apply engine oil to the needle bearing, install the
reverse idle gear and needle bearing, and insert
the reverse idle shaft.
16. Install the retainer in the transmission case.
Tighten:
26 N
⋅m (2.7 kg⋅m / 19.2 lb⋅ft)
Caution:
Thoroughly remove the sealant from the threads of the
transmission case, and use all new screws.
17. Install the speedometer gear.
• Install the collar.
18. Perform the following steps to assemble the 6th
clutch hub assembly (2) and sleeve (1).
a. Securely assemble the insert key (3) into the
block ring insert key groove.
b. Install the insert spring (4) on the insert key.
Caution:
• When assembling the insert spring, make sure that
the surplus length on either end of the spring is
about the same that it does not interfere with the
interior diameter of the hub.
• The insert spring opening on the back should not
be in the same position as the front opening.
2.32 — 2.38
2.17
2.26 — 2.32
2.11
Measured Value (mm)
Shim Thickness (mm)
From — To
N7A1090E
N7A1172E
N7A1173E
Automatic Transmission (Smoother) 7B-83
c. Confirm that the clutch hub (5) and sleeve (6)
slide smoothly.
d. Install a new stopper plug to the clutch hub.
19. Apply engine oil to the needle bearing and block
ring bore. Assemble the 6th gear and needle
bearing, and the 6th block ring. In phase with the
clutch hub block ring groove, assemble the 6th
clutch hub assembly and sleeve and use an
installer (5-8840-2244-0) to press fit with a
hammer.
20. Use snap ring pliers to install the 6th clutch hub
snap ring.
• Select the thickest snap ring from among the
three types that can be installed.
Caution:
If the snap ring is deformed or damaged during
installation, replace it with a new one and check to make
sure it is installed securely.
21. Apply engine oil to the transmission case shift rod
hole. Install the 6th shift arm (3) and 6th shift rod (4)
and press-fit the spring pin (2) by aligning with the
spring pin hole.
22. Install the 6th relay lever (1).
Tighten:
44 N
⋅m (4.5 kg⋅m / 32.5 lb⋅ft)
N7A1174E
N7A1175E
Thickness (mm)
Color Code
1.7
White
1.8
None
1.9
Blue
N7A1176E
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