Isuzu N-Series. Manual - part 962

7B-84 Automatic Transmission (Smoother)

23. Install the main end needle bearing.

• Apply Besco L2 grease to the inside of the

needle bearing, and apply engine oil to the rear
cover bearing contact surface bore. 

• With the stamped surface of the bearing facing

outwards, use an installer (5-8840-2752) and
grip (5-8840-0007-0) to press fit the needle
bearing to the rear cover, from the outside. 

24. Inspect the rear cover oil seal. If it needs to be

replaced with a new one due to wear, damage, or
main end needle bearing replacement, apply
engine oil to the outer circumference of the oil seal,
and then use an installer (5-8840-2750-0) to press-
fit it. 

• Apply Besco L2 grease to the lip of the oil seal. 

Caution:
Take care to avoid damaging the oil seal lip. 

25. Apply Three Bond TB1215 to the mating surface of

the transmission case rear cover, and install the
rear cover. 

• 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)

N7A1140E

N7A1178E

N7A1076E

Automatic Transmission (Smoother) 7B-85

Caution:
The bolts indicated by arrows (two points) have Loctite
applied. Thoroughly remove the sealant from the
transmission case threads, and use new Loctite coated
bolts. 

26. Apply Three Bond TB1215 to the mating surface of

the transmission case reverse idle cover, and
install the reverse idle cover. 

• 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:
19 N

⋅m (1.9 kg⋅m / 14 lb⋅ft)

27. Apply Three Bond TB1215 to the mating surface of

the transmission case PTO cover, and install the
PTO cover. 

• 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:
37 N

⋅m (3.8 kg⋅m / 27.3 lb⋅ft)

Caution:
The bolts have Loctite applied. Thoroughly remove the
sealant from the transmission case threads, and use
new Loctite coated bolts. 

28. Apply engine oil to the input shaft speed sensor O-

ring, and install the input shaft speed sensor. 

N7A1180E

N7A1181E

N7A1121E

N7A1122E

7B-86 Automatic Transmission (Smoother)

Tighten:
9 N

⋅m (0.9 kg⋅m / 6.6 lb⋅ft)

29. Thoroughly remove sealant from the threads of the

detent assembly (14), (13), (12), (11), apply Loctite
242, and install. 

Tighten:
27 N

⋅m (2.8 kg⋅m / 19.9 lb⋅ft)

30. Apply Loctite 242 to the reverse switch threads,

and install the reverse switch (10). 

Tighten:
39 N

⋅m (4.0 kg⋅m / 28.8 lb⋅ft)

31. Apply engine oil to the speedometer driver gear

and O-ring, and then install the speedometer
driven gear (9). 

Tighten:
20 N

⋅m (2.0 kg⋅m / 14.8 lb⋅ft)

32. Install the control box.

a. Set the gear position to neutral, apply Three

Bond TB1215 to the surface, which mates with
control box, of the transmission case, and
install the interlock plate and control box. 

• 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. 

Caution:
The bolts have Loctite applied. Thoroughly remove the
sealant from the transmission case threads, and use
new Loctite coated bolts. 

Tighten:
27 N

⋅m (2.8 kg⋅m / 19.9 lb⋅ft)

b. Attach clips to the harness (two points) and

install the neutral switch connector to the
bracket. 

c. Connect the five connectors to the control box. 

N7A1137E

N7A1124E

N7A1085E

Automatic Transmission (Smoother) 7B-87

• Connect the connectors of the select sensor

(3), shift sensor (4), select solenoid (5), 2-4-
6-R shift solenoid (6), and 1-3-5 shift
solenoid (7). 

33. Install the heat protector bracket (1) and heat

protector (2). 

Tighten:
Bracket

45 N

⋅m (4.6 kg⋅m / 33.2 lb⋅ft)

Protector

23 N

⋅m (2.3 kg⋅m / 17 lb⋅ft)

34. Apply engine oil to the O-ring, and then install the

drain plug and O-ring. 

Tighten:
39 N

⋅m (4.0 kg⋅m / 28.8 lb⋅ft)

35. Apply engine oil to the O-ring, and then install the

filler plug and O-ring. 

Tighten:
39 N

⋅m (4.0 kg⋅m / 28.8 lb⋅ft)

36. Install the parking brake assembly.

• Refer to “Parking Brake”. 

37. Install the parking brake bracket in the

transmission case.

Tighten:
48 N

⋅m (4.9 kg⋅m / 35.4 lb⋅ft)

38. Apply engine oil to the O-ring, and then install the

coupling driver and O-ring. 

39. Using a new lock nut, use the flange holder (5-

8840-2043-0 for MYY, 9-8529-2101-1) to tighten
the lock nut. 

Tighten:
289 N

⋅m (29.5 kg⋅m / 213.2 lb⋅ft)

• After tightening the lock nut to the specified

torque, stake it (2 points) securely using a
chisel (chisel tip shape: approx. 1 mm in radius

× 60 degrees) so the lock nut lip gap is aligned
with the V-groove of the shaft and is at least 5
mm, and the clearance between the V-groove
bottom and the nut lip is 2.5 mm or less. 

Caution:
After caulking, check the caulking of the nut. If any
cracks are discovered, replace the lock nut and re-caulk. 

40. Install the parking brake drum.

• Refer to “Parking Brake”. 

N7A1084E

N7A1083E

N7A1072E