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
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
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