Isuzu N-Series. Manual - part 251

ANTI-LOCK BRAKE SYSTEM (ABS) 5A4-69

Rear Speed Sensor Rotor

Components

Removal

1. Remove brake drum.
2. Remove axle shaft.
3. Remove outer oil seal, using a screwdriver.
4. Remove lock washer.
5. Remove bearing nut with a hub bearing nut

wrench.

6. Remove hub assembly from axle case.
7. Remove outer bearing from hub assembly.

8. Remove speed sensor rotor from hub assembly.
9. Remove inner bearing and inner oil seal from axle

case.

Inspection and Repair

1. Check the speed sensor rotor for damage including

tooth chipping. If damaged, replace speed sensor
rotor.

Legend

1. Brake Drum

6. Outer Bearing

2. Axle Shaft

7. Rear Hub

3. Outer Oil Seal

8. Speed Sensor Rotor

4. Lock Washer

9. Inner Bearing

5. Bearing Nut

10. Inner Oil Seal

N5A1057E

5A4-70 ANTI-LOCK BRAKE SYSTEM (ABS)

Installation

1. Using a bench press, install speed sensor rotor.

Notice:
Do not reuse the sensor rotor.

2. Install spacer on to the axle case.
3. Apply grease into the outer and inner bearings and

install bearings in the hub.

4. Install outer oil seal into hub.
5. Install hub assembly onto the axle case.

6. Set the lock nut with the notched line facing out.

Preload Adjustment

1) Turn the hub to the left and right several times

to establish bearing conformity.

2) Use the bearing nut wrench to tighten the bear-

ing nut until the hub can not be manually rotat-
ed.

3) Loosen the bearing nut until hub rotates easily.

4) Set the spring balancer to the wheel pin in the

position shown in the illustration.

5) Measure the hub bearing preload by carefully

pulling on the spring balancer and noting the in-
dicator reading.
Hub Bearing Preload (At Wheel Pin):
42 — 52 N (4.3 — 5.3 kg/9.4 — 11.6 lb)

6) Rotate the hub several times to the right and

left.

7) Measure the bearing preload a second time.

8) Align the axle case groove with the closest

bearing nut slit.

Notice:
If it is difficult to align the axle case and bearing nut,
slightly tighten the bearing nut.

7. Install the lock washer with the lock washer tabs in-

serted to the axle case grooves.
Install the lock bolts to prevent the bearing nut from
loosening.
Check that the lock washer tabs are inserted to the
axle case grooves.

8. Apply grease to the outer oil seal lip inner and outer

circumferences and install outer oil seal.

9. Clean the axle shaft.

Apply gear oil to the axle shaft spline.
Insert the axle shaft into the axle case.
Take care not to damage the oil seal.

10. Tighten the axle shaft nuts to the specified torque

a little at a time.

Tighten:
Nuts to 46 N

⋅m (4.7 kg⋅m/34 lb⋅ft)

11. Install brake drum.

N5A1058E

N5A1059E

N5A1060E

PARKING BRAKES 5C-1

BRAKES

SECTION 5C

PARKING BRAKES

Contents

GENERAL DESCRIPTION ...................................5C-2
PARKING BRAKE ASSEMBLY, PARKING BRAKE LE-
VER.......................................................................5C-3
UNIT REPAIR [178 mm, 190 mm TYPE] ..............5C-8
UNIT REPAIR [203 mm TYPE] ...........................5C-11

5C-2 PARKING BRAKES

GENERAL DESCRIPTION

Parking Brake Assembly

The parking brake is a mechanically operated internal-
expanding type drum brake. It is mounted on the rear of
the transmission case.
The control cable is routed into the vehicle cab where it
is connected to the parking brake lever.

Legend

A. 178 mm type

B. 190 mm type

Legend

A. 203 mm type

N5A0336E

N5A0337E