Page 4825 of 6020

CLUTCH 7C-47
3. CLUTCH SHUDDER
Checkpoint Problem Countermeasure
Grease or oil adhering to the
facing
Clean the related parts and/or
replace the facing
Replace the transmission front
cover oil seal
Replace the pressure plate
assembly
Defective transmission front
cover oil seal
Pressure plate unevenly wornPressure plate
Clean the related parts and/or
replace the facing
Tighten the connections
Repair or replace the
applicable parts
Too much grease
Poorly connected components
causing looseness and
abrasion
OK
NG
NG
NG
NG
OK
Power train
Clean and grease the spline
contact surface
Insufficient grease on the
spline contact surface of the
splined hub
Driven plate
Clean or repair the top gear
shaft spline
Replace the top gear shaft
Clean the related parts and/or
replace the facing
Replace the crankshaft rear oil
seal
Corrosion or step wear on the
top gear shaft spline
Defective crankshaft rear oil
seal
OK NG
NG
NG
OK
Continued on the next page
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ISUZU KB P190 2007
Page 4826 of 6020
7C-48 CLUTCH
Checkpoint Problem Countermeasure
Replace the driven plate
assemblyW arpage and/or uneven wear
Replace the driven plate
assemblyLoose facing rivets
NG
NG
OKDriven plate
Continued from the previous page
FlywheelRepair or replace the flywheelFlywheel uneven wear
NG
OK
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ISUZU KB P190 2007
Page 4827 of 6020

CLUTCH 7C-49
4. CLUTCH NOISE
1) Clutch Pedal Depressed (Clutch Disengaged)
Checkpoint Problem Countermeasure
Replace the pedal shaft with
the sleeveW orn pedal shaft and/or
sleeve
Clean and grease the pedal
shaft and sleeveInsufficient grease at the
pedal shaft and sleeve
NG
NGPedal shaft and sleeve
Master cylinder piston and
push rod contact facesClean and grease the master
cylinder piston and push rod
contact facesInsufficient grease at the
maser cylinder piston and
push rod contact faces
NG
OK
Driven plateReplace the driven plate
assemblyLoose or broken damper
spring
NG
OK
Crankshaft pilot bearingReplace the crankshaft pilot
bearingInsufficient grease at the
crankshaft pilot bearing (pilot
bearing worn)
NG
OK
2) Clutch Pedal Not Depressed (Clutch Engaged)
Replace the driven plateW eak or broken damper
spring
NGDriven plate damper spring
Replace the crankshaft pilot
bearingInsufficient grease at the
crankshaft pilot bearing (pilot
bearing worn)
OK
NG
Crankshaft pilot bearing
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ISUZU KB P190 2007
Page 4828 of 6020
7C-50 CLUTCH
5. OIL LEAKAGE
Checkpoint Problem Countermeasure
Replace the body sub
assembly
W eak or damaged piston cup
NG
Tighten the oil pipe
Tighten the oil pipe connection
Tighten the fluid pipe and/or
hose connections
Fluid reservoir
Loosely connected oil pipe
Loosely connected oil pipe
Master cylinder fluid pipe and
hose
Loosely connected fluid pipe
and/or hose
Slave cylinder oil pipe
Replace the piston cup
Slave cylinder
W eak or damaged piston cup
NG
NG
NG
NG
OK
OK
OK
OK
Master cylinder
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ISUZU KB P190 2007
Page 4829 of 6020
CLUTCH 7C-51
SPECIAL SERVICE TOOL
ILLUSTRATION PART NO. PART NAME
5-8525-3001-0 (J-24547)
Clutch pilot aligner
5-8840-2000-0 (J-5822)
Pilot bearing remover
5-8840-0019-0 (J-23907)
Sliding hammer
5-8840-0125-0 (J-26516-A)
Pilot bearing installer
5-8840-0007-0 (J-8092)
Drive handle
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ISUZU KB P190 2007
Page 4830 of 6020
Section 7D Transfer House ............................................................................................ 4879 PAGE
Section 7D1 Transfer Control System.......................................................................... 4923
SECTION 7
TRANSFER CASE
TA BLE OF CONTENTS
TRANSMISSION
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ISUZU KB P190 2007
Page 4831 of 6020

TRANSFER CASE 7D-1
SECTION 7D
TRANSFER CASE
TABLE OF CONTENTS
PAGE
Service Precaution ......................................................................................................... 7D – 2
General Description ........................................................................................................ 7D – 3
On-Vehicle Service ......................................................................................................... 7D – 4
Transfer Case Oil Level ............................................................................................... 7D – 4
Transfer Case Oil Change ........................................................................................... 7D – 5
Transfer Case Front Oil Seal ...................................................................................... 7D – 6
Transfer Case Rear Oil Seal ........................................................................................ 7D – 9
Transfer Case Assembly ................................................................................................ 7D – 11
Transfer Case Assembly and Associated Parts ........................................................ 7D – 11
Removal ....................................................................................................................... . 7D – 12
Installation .................................................................................................................. .. 7D – 12
Transfer Control Unit ...................................................................................................... 7D – 16
Removal ....................................................................................................................... . 7D – 17
Installation .................................................................................................................. .. 7D – 17
Transfer Disassembly .................................................................................................... 7D – 18
Removal ....................................................................................................................... . 7D – 18
Inspection and Repair ................................................................................................. 7D – 27
Inspection and Repair (Transfer Case Assembly) .................................................... 7D – 27
Reassembly .................................................................................................................. 7 D – 31
Main Data and Specifications ........................................................................................ 7D – 41
Special Tools ................................................................................................................ 7D – 44
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ISUZU KB P190 2007
Page 4832 of 6020

7D-2 TRANSFER CASE
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 UNNECESSARY 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 or
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