ISUZU KB P190 2007 Workshop Repair Manual

FRONT WHEEL DRIVE 4C1-67
4. NOISES IN FRONT AXLE
Checkpoint Trouble Cause Countermeasure

Replenish the gear oilInsufficient gear oil
NG
Replace the wheel bearing
Replace the pinion shaft
bearing
Replace the ring gear pinion
gear or side gear
Replace the gear oil
W heel bearingWorn
Pinion shaft bearingWorn
W orn or chipped
W rong or poor grade gear oil
Ring gear, pinion gear or side
gear
Adjust the backlashDrive pinion to ring gear
backlashToo much or too little backlash
NG
NG
NG
NG
NG
OK
OK
OK
OK
Oil level
Tighten or replaceDifferential bearingLoose or worn
NG
OK



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ISUZU KB P190 2007

4C1-68 FRONT WHEEL DRIVE
5. WANDERS AND PULLS
Checkpoint Trouble Cause Countermeasure


Adjust the wheel bearing
preload

Too tight

NG


Adjust the front alignment

Front alignment

Incorrect


Tighten or replace

Steering unit

Loose or worn

NG
NG
OK
OK

Tighten or replace


Replace or adjust the inflation


Suspension

Front or rear suspension parts
loose or broken


Tire

W orn or improperly inflated

NG
NG
OK
OK

W heel bearing preload




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ISUZU KB P190 2007

FRONT WHEEL DRIVE 4C1-69
6. FRONT WHEEL SHIMMY
Checkpoint Trouble Cause Countermeasure



Ball joint or bush

Replace the ball joint or bush

Worn


Front alignment

Adjust the front alignment


Adjust or replace


Incorrect


W orn or improperly adjusted

OK
OK NG
NG
NG
OK
W heel bearing

Tighten or replace

Loose or worn

NG

Shock absorber

Replace the shock absorber

Worn


Tire

Replace or adjust the inflation

W orn or improperly inflated

OK NG
NG
OK

Steering unit


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ISUZU KB P190 2007

4C1-70 FRONT WHEEL DRIVE
PROPELLER SHAFT 1. NOISE

Checkpoint Trouble Cause Countermeasure

Spider bearingReplaceWorn or jammed
ReplaceDamaged or worn
NG
NG
OKYoke spline



2. VIBRATION

Shaft balanceAdjustUnbalance
ReplaceIncorrect
NG
NG
OKShaft runout
Transmission rear housing
bushing, transfer case
housing bushing
ReplaceWorn
NG
OK
Yoke splineReplaceJammed
NG
OK



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FRONT WHEEL DRIVE 4C1-71
SPECIAL SERVICE TOOL
ILLUSTRATION PART NO. PART NAME
5-8840-2309-0 Ft axle mount bushing installer & remover
5-8840-2745-0 Pliers
5-8840-00
13-0
(J-22888) Side bearing remover
9-852
1-1 743-0
(J-8 107-2) Side bearing plug adapter
5-8840-0
133-0
(J-86 14-0 1) Pinion flange holder

9-852
1-5032-0 Final pinion spindle
5-8840-00
15-0
(J-229 12-0 1) Separator
9-8522-
1141-0
(J-24256) Outer bearing outer race installer
5-8840-0007-0
(J-8092) Grip

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ISUZU KB P190 2007

4C1-72 FRONT WHEEL DRIVE
ILLUSTRATION PART NO. PART NAME
9-8522-
1274-0
(J-24252) Inner bearing outer race installer
5-8840-2085-0
(J-2 1777-42) Pilot
5-8840-2089-0
(J-23597-9) Nut & bolt
5-8840-2087-0
(J-23597-7) Gauge plate
5-8840-0
126-0
(J-800 1) Dial indicator
5-8840-0
128-0
(J-23597- 1) Arbor
5-8840-2088-0
(J-23597-8) Disc (2 pcs. required)
9-8522-
1165-0
(J-6 133-0 1) Pinion bearing installer (for 4W D)
9-8522-
1275-0
(J-24250) Pinion oil seal installer

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ISUZU KB P190 2007

FRONT WHEEL DRIVE 4C1-73
ILLUSTRATION PART NO. PART NAME
9-8522-
1164-0
(J-24244) Side bearing installer

5-8840-2852-0
Outer bearing installer
(for 2W D)
5-8522-0054-0
(J-290 15) Inner bearing installer
(for 4W D)
5-8840-2853-0
Hub oil seal installer
(for 2W D)

5-8840-2
117-0
(J-36827) Hub nut wrench

5-8840-2
119-0
(J-36829) Inner bearing installer (for 4W D)
5-8840-2854-0
Oil seal installer (for 4W D)
5-8840-2789-0
ABS sensor rotor installer
9-8522-
1270-0 Inner bearing installer (for 2W D)


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ISUZU KB P190 2007

SH IF T O N T H E FL Y S Y STEM 4 C2
SECTION 4C2
SHIFT ON THE FLY SYSTEM
TABLE OF CONTENTS

Service Precaution ............................................. 4C2-1
Shift On The Fly System .................................... 4C2-2 Outline of Shift on The Fly System .................. 4C2-2
Shift On The Fly Electrical Equipment................ 4C2-3 Axle Shaft Connection and Disconnection ...... 4C2-3
Actuator Assembly .......................................... 4C2-3

Shift On The Fly System and Association
Parts .................................................................. 4C2-4 Disassembly .................................................... 4C2-5
Inspection and Repair ..................................... 4C2-6
Reassembly .................................................... 4C2-9
Torque Specifications...................................... 4C2-12
Special Service Tool ....................................... 4C2-13




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SHIFT ON THE FLY SYSTEM 4C2-1

SERVICE PRECAUTION
WARNING: THIS VEHICLE HAS A SUPPLEMENTAL
RESTRAINT SYSTEM (SRS). REFER TO THE SRS
COMPONENT AND WIRING LOCATION VIEW IN
ORDER TO DETERMINE WHETHER YOU ARE
PERFORMING SERVICE ON OR NEAR THE SRS
COMPONENTS OR THE SRS WIRING. WHEN YOU
ARE PERFORMING SERVICE ON OR NEAR THE
SRS COMPONENTS OR THE SRS WIRING, REFER
TO THE SRS SERVICE INFORMATION. FAILURE TO
FOLLOW WARNINGS COULD RESULT IN
POSSIBLE AIR BAG DEPLOYMENT, PERSONAL
INJURY, OR OTHERWISE UNNEEDED SRS SYSTEM
REPAIRS.

CAUTION: Always use the correct fastener in the
proper location. When you replace a fastener, use
ONLY the exact part number for that application.
ISUZU/GM will call out those fasteners that require
a replacement after removal. ISUZU/GM will also
call out the fasteners that require thread lockers o
r
thread sealant. UNLESS OTHERWISE SPECIFIED,
do not use supplemental coatings (Paints, greases,
or other corrosion inhibitors) on threaded fasteners
or fastener joint interfaces. Generally, such
coatings adversely affect the fastener torque and
the joint clamping force, and may damage the
fastener. When you install fasteners, use the
correct tightening sequence and specifications.
Following these instructions can help you avoid
damage to parts and systems.


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ISUZU KB P190 2007

4C2-2 SHIFT ON THE FLY SYSTEM
SHIFT ON THE FLY SYSTEM
Outline of Shift on The Fly System
The shift on the fly system switches between 2 wheel
drive (2W D) and 4 wheel drive (4W D) electrically b
y
driver's pressing the 4W D switch (push button type) on
instrument panel.
This system controls below operations.
1. Shifting the transfer front output gear (Connecting to,
and disconnecting from, front propeller shaft b
y
motor actuator).
2. Retrial of shifting the transfer front output gear.
3. Connecting front wheels to, and disconnecting them from, the front axles by axle motor actuator.
4. Indicator on instrument panel.
5. 4W D out signal to other Electronic Hydraulic Control Unit.

System Diagrams
RUW 34BLF000201


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