Isuzu N-Series. Manual — part 150
SERVICE INFORMATION 00-1
PROPELLER SHAFT AND AXLE
SECTION 00
SERVICE INFORMATION
Contents
TROUBLESHOOTING . . . . . . . . . . .. 00-2
Propeller Shaft. . . . . . . . . . . . ... 00-2
Rear Axle and Front Driving Axle . . . . . .. 00-2
Propeller Shaft. . . . . . . . . . . . ... 00-9
Front Hub and Brake Drum (4
Front Axle, Knuckle and King Pin (4
Front Hub, Brake Drum Spindle, Drive Shaft, Knuckle
and King Pin (4
× 4 Model) . . . . . . . .. 00-13
00-2 SERVICE INFORMATION
TROUBLESHOOTING
Propeller Shaft
Rear Axle and Front Driving Axle
PROBLEM
POSSIBLE CAUSE
CORRECTION
Noises from Propeller
Shaft
1. Worn spline yoke.
1. Replace the spline yoke.
2. Worn or stuck spider bearing.
2. Replace the center bearing.
3. Worn center bearing.
3. Replace the center bearing.
Vibration from Propel-
ler Shaft
1. Incorrect shaft run-out.
1. Replace the propeller shaft.
2. Out of shaft balance.
2. Adjust the shaft balance.
3. Stuck spline yoke.
3. Replace the spline yoke.
PROBLEM
POSSIBLE CAUSE
CORRECTION
Oil Leak at Front Axle
or Rear Axle
1. Worn or defective oil seal.
1. Replace the oil seal.
2. Axle housing cracked.
2. Repair or replace.
Oil Leak at Pinion Shaft
1. Too much gear oil.
1. Correct the oil level.
2. Oil seal worn or defective.
2. Replace the oil seal.
3. Pinion flange loose or damaged.
3. Tighten or replace.
Noises in Front Axle or
Rear Axle
1. Insufficient gear oil.
1. Replenish the gear oil.
2. Wrong or poor grade gear oil.
2. Replace the gear oil.
3. Drive pinion to ring gear backlash incor-
rect.
3. Adjust the backlash.
4. Worn or chipped ring gear, pinion gear
or side gear.
4. Replace the ring gear, pinion gear or
side gear
5. Pinion shaft bearing worn.
5. Replace the pinion shaft bearing.
6. Wheel bearing worn.
6. Replace the wheel bearing.
7. Differential bearing loose or worn.
7. Tighten or replace.
SERVICE INFORMATION 00-3
MAIN DATA AND SPECIFICATIONS
Propeller Shaft
Rear Axle
NHR55, 69
NKR55
NKR66, 71, 77
NPR66, 70, 71, 77
NQR66, 71, NPS71
NQR70, 75
NPR75
NPS75
Bearing retention method
Inside snap ring
Outside snap ring
Spider length
mm (in)
69 (2.72)
85 (3.35)
95 (3.74) <for Taiwan,
Australia and GCC>
96 (3.780)
Spider outside dia.
mm (in)
18.46 (0.73)
21.94 (0.86)
23.02
(0.9065)
Tube-outside dia.
diameter
× thickness
mm (in)
68.9
× 2.0
(2.71
× 0.08)
82.6
× 2.3
(3.25
× 0.09)
90
× 3.2
(3.54
× 0.13)
Flange bolt size
M10
M12
M12
Flange bolt P.C.D.
mm (in)
85 (3.35)
100 (3.94)
110 (4.33)
Vehicle series
NHR55, 69
NKR55, 69 (For general export;
Turkey, Chile)
Single
Dual Small
Single
Dual Small (For
Turkey)
Rear axle type
Banjo semi-float-
ing
Banjo full floating
Gear type
Hypoid
Number of differential pinion
4
Ring gear pitch diameter
mm (in)
244 (9.6)
Amount of hub grease
(each wheel)
g (oz)
80 (2.8)
285 (10.1)
280 (9.9)
285 (10.1)
Oil capacity
lit (US/
Imp qt)
2.7 (2.9/2.4)
00-4 SERVICE INFORMATION
(A): for 2003 year model except straight frame
(B): for 2003 year model and straight frame, except Colombia
(C): for 2003 year model, straight frame and Colombia
Vehicle series
NPR66,
71
(Singap
ore,
Turkey)
70
(Taiwan,
Chile),
77
NPS71
NKR55,
69, 71
NKR66
NKR77
Dual
Single
Dual
Single
Dual
Dual
Small
Rear axle type
Banjo full floating
Gear type
Hypoid
Number of differential
pinion
4
Ring gear
pitch diameter
mm
(in)
292 (11.5)
Amount of
hub grease
(each wheel)
g (oz)
285 (10.1)
Oil capacity
lit (US/
Imp qt)
3.0 (3.2/2.6)
Vehicle series
NPS75
NPR70
(Hong Kong)
71
(Colombia),
75
NQR66, 70, 71, 75
NKR71
Dual
Rear axle type
Banjo full floating
Gear type
Hypoid
Number of differential pinion
4
Ring gear pitch diameter
mm (in)
320 (12.5)
Amount of hub grease
(each wheel)
g (oz)
285 (10.1)
Oil capacity
lit (US/
Imp qt)
3.4 (3.6/3.0)
(A) 3.4 (3.6/3.0)
(B) 4.3 (4.5/3.8)
(C) 5.2 (5.5/4.6)
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