Isuzu N-Series. Manual - part 93

2-78 CAB AND FRAME

CAB MOUNTING

Front Mounting

Removal

1. Cab assembly

• Refer to “Removal and Installation of Cab As-

sembly” in this Section.

2. Anchor bolt (Tilt cab model)

• Loosen the anchor bolt, remove the adjusting

bolt, and then remove the anchor bolt.

3. Front cab mounting bracket

• For RH side, remove the 4 fixing bolts. The nut

side is classified into 2 types, weld and plate,
depending on models.

• For LH side, remove the 2 fixing bolts from the

upper and 2 fixing bolts from the side. The nut
side is classified into 2 types, weld and plate,
depending on models, similarly to RH side.

4. Anchor arm

• Remove the snap ring in the end of torsion bar.

5. Cab mounting lever assembly

Legend

A. Non-tilt cab

1. Cab mounting bracket fixing bolt

B. Tilt cab (wide)

2. Cab mounting lever assembly

C. Tilt cab (narrow)

N2A0128E

CAB AND FRAME 2-79

Installation

For installation, reverse the removal procedure taking
the following points into consideration.

1. Apply grease to the designated locations.

a. BESCO L-2 applied area
b. BESCO rubber grease application range

• Apply it to the outer side of the body with

mounting rubber.

2. Tighten the fixing bolt of cab mounting bracket to

the specified torque.

Tighten:
Fixing bolt to 117

±11.8 N⋅m (11.9±1.2 kg⋅m/86.3±8.7

lb

⋅ft)

3. When installing anchor arm, align the match mark

(I mark) with the missing tooth of the torsion bar.

4. Adjust the amount of projection for anchor arm as-

sembly (1) with adjusting bolt (3), and fix with the
lock nut (2). (Tilt cab model)

The following dimensions are guide values.
When adjustment of operating force is necessary, refer
to “7. Operating Force Adjustment”.

5. Tighten the lock nut to the specified torque.

Tighten:
Lock nut to 76 N

⋅m (7.7 kg⋅m/56.1 lb⋅ft)

6. Tighten the anchor arm anchor bolt to the specified

torque.

Tighten:
Anchor arm anchor bolt to 95 N

⋅m (9.7 kg⋅m/70.1 lb⋅ft)

7. Cab tilt operating force adjustment

• Perform the following procedure when the cab

equips heavy items such as roof rack, or any
other occasion which require cab tilt operating
force adjustment.

a. Tilt-up the cab.

Caution:
Never perform adjustment with the cab tilt-down, since
the torsion bar torque is applied to the adjusting bolt and
nut of the anchor arm.

b. Loosen the anchor bolt to the degree that al-

lows you to turn it by hand.

c. Turn the adjusting bolt to adjust the operating

force.

• Clockwise direction: Reduces cab tilt operat-

ing force.

• Counterclockwise direction: Increase cab tilt

operating force.

Legend

1. Tilt cab model
2. Torsion bar
3. Cab mounting lever assembly
4. Anchor arm
5. Non-tilt cab model

N2A0129E

Dimen

sion

Bolt projection 

amount
mm (in)

Model type

Remarks

a

18

±2.5 

(0.7

±0.1)

NKR slide 

door, NPS

Adjustment 

dimension 

13.5

±2.5 

(0.5

±0.1)

Except 

above

N2A0130E

2-80 CAB AND FRAME

Notice:
One turn of the bolt changes 

±4kg of cab tilt operating

force.

d. Check that the adjusting bolt tip contacts the

anchor arm side face.

e. Tighten the anchor bolt and lock nut to the

specified torque.

f. Tilt-up or down the cab to make sure that the

operating force is well-balanced. Repeat the
steps (a) to (f) until the above condition is satis-
factory.

Notice:
Specification for adjustment bolt projection amount is
described in “4. Projection amount adjustment”.

Fixing Torque

N2A0131E

CAB AND FRAME 2-81

Rear Mounting (Model with Rubber Bush-
ing except Wide Cab Model)

Removal

1. Tilt-up the cab.
2. Cab rear mounting bracket (1)

• Remove the bolt and nut.

3. Cab mounting bracket (3)

• Remove the cover (4) and remove the installing

bolts. (Independent: 5 bolts, Rigid: 4 bolts)

4. Rubber bushing assembly (2)

Installation

For installation, reverse the removal procedure taking
the following points into consideration.

1. Tighten the cab mounting bracket to the specified

torque.

Tighten:
Cab mounting bracket to 81

±7.8 N⋅m (8.3±0.8 kg⋅m/

59.7

±5.8 lb⋅ft)

2. Tighten the cab rear mounting bracket to the spec-

ified torque.

Tighten:
Cab rear mounting bracket to 127

±13 N⋅m (13.0±1.3

kg

⋅m/93.7±9.6 lb⋅ft)

3. Set the tilt of cab rear mounting bracket to 

±2°or

less.

Fixing Torque

N2A0132E

N2A0133E