2007 ISUZU KB P190 tow

3B-8 POWER-ASSISTED STEERING SYSTEM
6. Fully close the shutoff valve. Record the highest
pressures.
・ If the pressure recorded is within 9800-10300 kPa
(100-105 kg/cm
2/1422-1493psi), the pump is
functioning within its specifications.
・ If the pressure recorded is higher than 10300 kPa
(105 kg/cm
2/1493psi), the valve in the pump is
defective.
・ If the pressure recorded is lower than 9800 kPa
(100 kg/cm
2/1422psi), the valve or the rotating
assembly in the pump is defective.
7. If the pump pressures are within specifications, leave the valve open and turn (or have someone
else turn) the steering wheel fully in both directions.
Record the highest pressures and compare with the
maximum pump pressure recorded in step 6. If this
pressure cannot be built up at either side of the
power steering unit, the power steering unit is
leaking internally and must be replaced.
8. Shut the engine off, remove the testing gauge.
9. Reconnect the pressure hose, check the fluid level and make the needed repairs.
10. If the problem still exists, the steering and front suspension must be thoroughly examined.

Maintenance
The hydraulic system should be kept clean, the fluid
level in the reservoir should be checked at regula
r
intervals and fluid added when required. Refer to
Recommended Fluids and Lubricants in General
Information section for the type of fluid to be used and
the intervals for filling.
If the system contains some dirt, flush it as described in
this section. If it is exceptionally dirty, the pump must be
completely disassembled before further usage. (The
steering unit cannot be disassembled.)
All tubes, hoses, and fittings should be inspected for
leakage at regular intervals. Fittings must be tight. Make
sure the clips, clamps and supporting tubes and hoses
are in place and properly secured.
Power steering hoses and lines must not be twisted,
kinked or tightly bent. Air in the system will cause
spongy action and noisy operation. W hen a hose is
disconnected or when fluid is lost, for any reason, the
system must be bled after refilling. Refer to Bleeding the
Power Steering System in this section.
・ Inspect gear for looseness or damage.
・ Inspect hoses to insure they are not touching an
y
other parts of the vehicle.
・ Inspect fluid level and fill to the proper level.

Fluid Level
1. Run the engine until the power steering fluid
reaches normal operating temperature, about 55 °
C (130 °F), then shut the engine off.
2. Check the level of fluid in the reservoir.
3. If the fluid level is low, add power steering fluid as
specified in General Information to the proper level
and install the receiver cap.
4. W hen checking the fluid level after the steering system has been serviced, air must be bled from
the system. Refer to Bleeding the Power Steering
System in this section.

Bleeding the Power Steering System
W hen a power steering pump or unit has been installed,
or an oil line has been disconnected, the air that has
entered the system must be bled out before the vehicle
is operated. If air is allowed to remain in the powe
r
steering fluid system, noisy and unsatisfactory operation
of the system may result.

Bleeding Procedure
W hen bleeding the system, and any time fluid is added
to the power steering system, be sure to use only powe
r
steering fluid as specified in General Information.
1. Fill the pump fluid reservoir to the proper level and let the fluid settle for at least two minutes.
2. Start the engine and let it run for a few seconds. Do not turn the steering wheel. Then turn the engine
off.
3. Add fluid if necessary.
4. Repeat the above procedure until the fluid level remains constant after running the engine.
5. Raise and support the front end of the vehicle so that the wheels are off the ground.
6. Start the engine. Slowly turn the steering wheel right and left, lightly contacting the wheel stops.
7. Add power steering fluid if necessary.
8. Lower the vehicle, set the steering wheel at the straight forward position after turning it to its full
steer positions 2 or 3 times, and stop the engine.
9. Check the fluid level and refill as required.
10. If the fluid is extremely foamy, allow the vehicle to settle for a few minutes, then repeat the above
procedure.

Flushing the Power Steering System
1. Raise and support the front end of the vehicle off
the ground until the wheels are free to turn.
2. Remove the fluid return line at the pump inlet connector and plug the connector port on the pump.
Direct the line toward a large container to catch the
draining fluid.
3. W hile running the engine at idle, fill the reservoi
r
with new power steering fluid. Turn the steering
wheel in both directions. Do not contact or hold the
steering wheel to the wheel stops. This will cause
the pump to go to pressure relief mode, which ma
y
cause a sudden fluid overflow at the reservoir.


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ISUZU KB P190 2007

3B-14 POWER-ASSISTED STEERING SYSTEM
Disassembly
NOTE : The valve hosing is made of aluminum and care
should be exercised when clamping in a vise, etc.
to prevent distortion or damage.
For the left side, follow the same steps as right side.
1. Loosen lock nut and remove tie-rod end.
2. Remove clip and band, then remove bellows.
• Use a pair of pliers to open the clip. Slide the cliptoward the tie-rod end.





RUW 53BSH000401
• Remove band from the bellows by using
screwdriver.





RUW 53BSH000501


CAUTION :
For 4 ×
××
×
2 except High ride suspension models;
The band is not reusable. If removed, it must be
replaced with a new one.
Take care not to damage the bellows during band
removal.
For 4 ×
××
×
4 and 4 ×
××
×
2 High ride suspension models;
The band and bellows are not reusable. If removed,
they must be replaced with a new one.
3. Remove tie-rod assembly.
To remove, move the boot toward the tie-rod end, then remove tab washer.
4. Remove oil line, mounting rubber and dust cover.

Inspection and Repair
Make necessary correction or parts replacement if wear,
damage, corrosion or any other abnormal condition are
found during inspection.
Check the following parts.
1. Tie-rod end
2. Lock nut
3. Clip
4. Bellows
5. Band
Tie-Rod End
If looseness or play is found when checked by moving
the end of ball joint at tie-rod end, replace tie-rod end.

Tie-Rod Assembly
If the resistance is insufficient or play is felt when
checked by moving the ball on the tie-rod, replace the
tie-rod assembly.

Rubber Parts
For 4 ×2 except High ride suspension models;
If wear or damage is found during inspection, replace
with new ones.
For 4 ×4 and 4 ×2 High ride suspension models;
Even if wear or damage is not found after removal,
replace with new ones.

Reassembly
1. Install mounting rubber and dust cover (If removed).
2. Install oil line. Torque: 12 N ⋅
⋅⋅
⋅
m (1.2 kgf ⋅
⋅⋅
⋅
m/104 lb ⋅
⋅⋅
⋅
in)


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ISUZU KB P190 2007

REAR SUSPENSION 3D-9
Installation
1. Install the bump rubber and bolt and tighten it to thespecified torque.
Torque N ⋅m (kgf ⋅m/lb ⋅ft)
42 (4.3/31)
2. Install the leaf spring. • The leaf spring assembly should be installed so that the
built-in rubber bush is toward the front.
• Align the holes of the spring eye and frame bracket.
• Insert the spring pin toward vehicle inner side, through
the frame bracket holes and the spring bush hole.
• Tighten the nut a little and, after the vehicle is lowered,
tighten it to the specified torque.
Torque N ⋅m (kgf ⋅m/lb ⋅ft)
152 (15.5/112)





RTW 340LF000101





RTW 63DSH000101
• Apply rubber grease to inside and outside of the rubber
bushing.
• Install the rubber bushings into the hole in the frame
side bracket and the spring rear eye.
• Install the shackle pin and shackle plate.
• Tighten the nuts a little and, after vehicle is lowered,
tighten it to the specified torque.
Torque N ⋅m (kgf ⋅m/lb ⋅ft)
98 (10.0/72)
3. Support the lower clamp under the leaf spring.
4. Apply oil to the thread portion of U bolt.
Install the U bolt (1) and seat (2) on the rear axle and insert
the U bolt in the lower clamp holes.
Tolerance of assembling the seat
A
90° ±2°
5. Tighten the nut to the specified torque.
NOTE: Apply oil to the thread.
Torque N⋅m (kgf ⋅m/lb ⋅ft)
78 (8.0/58)
6. Install the shock absorber and inner washer on the lower clamp pin and frame side pin.
7. Install the washer and nut on the frame side pin and tighten the nut to the specified torque.
Torque N ⋅m (kgf ⋅m/lb ⋅ft)
39 (4.0/29)
8. Install the washer and nut on the lower clamp pin and tighten the nut to the specified torque.
Torque N ⋅m (kgf ⋅m/lb ⋅ft)
39 (4.0/29)

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ISUZU KB P190 2007

FRONT WHEEL DRIVE 4C1-33
(7) Select the shim using the chart;

mm(in)
Pinion
marking
+10 +8 +6 +4 +2 0 -2 -4 -6 -8 -10 Dial indicator
reading (inches)
0.081 2.18 (0.0858)0.082 2.18 (0.0858) 2.20 (0.0866)0.083 2.18 (0.0858) 2.20 (0.0866) 2.24 (0.0882)0.084 2.18 (0.0858) 2.20 (0.0866) 2.24 (0.0882) 2.26 (0.0890)0.085 2.18 (0.0858) 2.20 (0.0866) 2.24 (0.0882) 2.26 (0.0890) 2.28 (0.0898)0.086 2.18 (0.0858) 2.20 (0.0866) 2.24 (0.0882) 2.26 (0.0890) 2.28 (0.0898) 2.32 (0.0913)0.087 2.18 (0.0858) 2.20 (0.0866) 2.24 (0.0882) 2.26 (0.0890) 2.28 (0.0898) 2.32 (0.0913) 2.34 (0.0921)0.088 2.18 (0.0858) 2.20 (0.0866) 2.24 (0.0882) 2.26 (0.0890) 2.28 (0.0898) 2.32 (0.0913) 2.34 (0.0921) 2.36 (0.0929)0.089 2.18 (0.0858) 2.20 (0.0866) 2.24 (0.0882) 2.26 (0.0890) 2.28 (0.0898) 2.32 (0.0913) 2.34 (0.0921) 2.36 (0.0929) 2.38 (0.0937 )0.090 2.18 (0.0858) 2.20 (0.0866) 2.24 (0.0882) 2.26 (0.0890) 2.28 (0.0898) 2.32 (0.0913) 2.34 (0.0921) 2.36 (0.0929) 2.38 (0.0937) 2.42 (0.0953)0.091 2.18 (0.0858) 2.20 (0.0866) 2.24 (0.0882) 2.26 (0.0890) 2.28 (0.0898) 2.32 (0.0913) 2.34 (0.0921) 2.36 (0.0929) 2.38 (0.0937) 2.42 (0.0953) 2.44 (0.0961)0.092 2.20 (0.0866) 2.24 (0.0882) 2.26 (0.0890) 2.28 (0.0898) 2.32 (0.0913) 2.34 (0.0921) 2.36 (0.0929) 2.38 (0.0937) 2.42 (0.0953) 2.44 (0.0961) 2.46 (0.0969)0.093 2.24 (0.0882) 2.26 (0.0890) 2.28 (0.0898) 2.32 (0.0913) 2.34 (0.0921) 2.36 (0.0929) 2.38 (0.0937) 2.42 (0.0953) 2.44 (0.0961) 2.46 (0.0969) 2.48 (0.0976)0.094 2.26 (0.0890) 2.28 (0.0898) 2.32 (0.0913) 2.34 (0.0921) 2.36 (0.0929) 2.38 (0.0937) 2.42 (0.0953) 2.44 (0.0961) 2.46 (0.0969) 2.48 (0.0976) 2.52 (0.0992)0.095 2.28 (0.0898) 2.32 (0.0913) 2.34 (0.0921) 2.36 (0.0929) 2.38 (0.0937) 2.42 (0.0953) 2.44 (0.0961) 2.46 (0.0969) 2.48 (0.0976) 2.52 (0.0992) 2.54 (0.1000)0.096 2.32 (0.0913) 2.34 (0.0921) 2.36 (0.0929) 2.38 (0.0937) 2.42 (0.0953) 2.44 (0.0961) 2.46 (0.0969) 2.48 (0.0976) 2.52 (0.0992) 2.54 (0.1000) 2.56 (0.1008)0.097 2.34 (0.0921) 2.36 (0.0929) 2.38 (0.0937) 2.42 (0.0953) 2.44 (0.0961) 2.46 (0.0969) 2.48 (0.0976) 2.52 (0.0992) 2.54 (0.1000) 2.56 (0.1008) 0.098 2.36 (0.0929) 2.38 (0.0937) 2.42 (0.0953) 2.44 (0.0961) 2.46 (0.0969) 2.48 (0.0976) 2.52 (0.0992) 2.54 (0.1000) 2.56 (0.1008) 0.099 2.38 (0.0937) 2.42 (0.0953) 2.44 (0.0961) 2.46 (0.0969) 2.48 (0.0976) 2.52 (0.0992) 2.54 (0.1000) 2.56 (0.1008) 0 2.42 (0.0953) 2.44 (0.0961) 2.46 (0.0969) 2.48 (0.0976) 2.52 (0.0992) 2.54 (0.1000) 2.56 (0.1008) 0.001 2.44 (0.0961) 2.46 (0.0969) 2.48 (0.0976) 2.52 (0.0992) 2.54 (0.1000) 2.56 (0.1008) 0.002 2.46 (0.0969) 2.48 (0.0976) 2.52 (0.0992) 2.54 (0.1000) 2.56 (0.1008) 0.003 2.48 (0.0976) 2.52 (0.0992) 2.54 (0.1000) 2.56 (0.1008) 0.004 2.52 (0.0992) 2.54 (0.1000) 2.56 (0.1008) 0.005 2.54 (0.1000) 2.56 (0.1008) 0.006 2.56 (0.1008)
Note :
When ordering shims, find the part number in the Parts Catalog by using the thickness of the shims listed
in the above table.








5. Inner Bearing
Place the shim on the drive pinion, with the chamfered side
turned towards the pinion head then install the inner bearing on
to the pinion using an installer and a press.
Installer : 9-8522-1165-0
Note:
Do not apply pressure to the roller cage.
Apply pressure only to the inner race.



6. Collapsible Spacer
Discard the used collapsible spacer and install a new one.








9. Oil Seal
Use oil seal installer to install a new oil seal that has been
soaked in rear axle lubricant.
Installer : 9-8522-1275-0
Note :
Take care not to use a rear differential oil seal instead of
the front differential oil seal.


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ISUZU KB P190 2007

BRAKE CONTROL SYSTEM 5A-23
Electronic Brake-force Distribution (EBD) System
ABS has the EBD function. EBD is a function which
controls braking force distribution of a front wheel and a
rear wheel, and makes brake fluid pressure of a rear
wheel the optimal. If the rate of slip of a rear wheel
becomes greater compared to a front wheel, the brake
fluid pressure of a rear wheel will be controlled in order
to perform braking force distribution between the front
and rear wheels. EBD enables the braking power of a
rear wheel to always be utilized for the maximum
according to the load change concerning the back axis
according to the vehicle’s loading state (No luggage,
loading, etc.), deceleration, etc. Brake fluid pressure
control to a rear wheel is performed by the EBD function
which uses the ABS function without the mechanical
proportioning valve.
C05L300016
Brake Pedal Travel
Vehicles equipped with the Anti-lock Brake System may
be stopped by applying normal force to the brake pedal.
Although there is no need to push the pedal beyond the
point where it stops or holds the vehicle, by applying
more force the pedal will continue to travel toward the
floor.
This extra brake pedal travel is normal.

Acronyms and Abbreviations
Several acronyms and abbreviations are commonly
used throughout this section:
ABS
Anti-lock Brake System
CKT
Circuit
DLC
Data Link Connector
EBD
Electronic Brake-force Distribution
EHCU
Electronic Hydraulic Control Unit
FL
Front Left
FR
Front Right
GEN
Generator
H/U
Hydraulic Unit
MV
Millivolts
RR
Rear
RPS
Revolutions per Second
VDC
DC Volts
VAC
AC Volts
W/L
W arning Lamp
WSS
W heel Speed Sensor

General Diagnosis
General Information
ABS problems can be classified into two types, those
which can be detected by the ABS warning lamp and
those which can be detected as a vehicle abnormality
by the driver.
In either case, locate the fault in accordance with the
“BASIC DIAGNOSTIC FLOW CHART” and repair.
Please refer to Section 5C for the diagnosis of
mechanical troubles such as brake noise, brake judder
(brake pedal or vehicle vibration felt when braking),
uneven braking, and parking brake trouble.

ABS Service Precautions
Required Tools and Items:
• Box W rench
• Brake Fluid
• Special Tool
Some diagnosis procedures in this section require the
installation of a special tool.

5-8840-0366-0 High Impedance Multimeter
W hen circuit measurements are requested, use a circuit
tester with high impedance.

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ISUZU KB P190 2007

5C-32 BRAKES

5. Pull the PEDAL ARM a little towards you so that the
PEDAL ARM is not pushed in.
6. Holding the PEDAL ARM still with one hand, push in the whole SW ITCH with the other hand until the PLUNGER
of the SW ITCH is pushed in and the SW ITCH itself hits
the RUBBER of the PEDAL ARM.
In this condition, turn the SW ITCH clock-wise until a “click” sound is heard and lock it.
By doing this the SW ITCH is adjusted at 0.7 ±0.5 mm
(0.028 ± 0.020 in) clearance.



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5C-46 BRAKES



RUW 55CSH000401


Important Operations
4. Spring; shoe hold
Push the shoe hold spring toward the brake shoe and hold it
(1). Rotate the spring to remove it from the shoe hold pin (2).


6. Spring; shoe to shoe, lower
Slide the brake shoes and lower spring toward the ground.
Remove the lower spring.


INSPECTION AND REPAIR
Make necessary correction or parts replacement if wear damage or any other abnormal conditions are found
through inspection.



• Brake drum
• Back plate
• Brake lining
• W heel cylinder body
• Piston
• Piston cup
• Return spring



Visual check
Inspect the following parts for wear scuffs, scratches,
corrosion, stains, deterioration, or other abnormal conditions.





Thickness of the Brake Lining
Thickness mm (in)
standard (T) Limit (t)
4× 2, 4 ×4 5.0 (0.197) 1.0 (0.039)



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6A – 34 ENGINE MECHANICAL



RTW 46ASH000701
9. Turn the crankshaft clockwise and read the gauge
indication when the crankshaft pulley timing mark (8 °)
is aligned with the pointer.

Injection Timing : BTDC 8 ° ± 2 °

Standard Reading mm (in)
0.5 (0.02)

If the injection timing is outside the specified range,
continue with the following steps.


10. Loosen the injection pump fixing nuts and bracket bolts.
11. Adjust the injection pump setting angle.
W hen large than standard value W hen smaller than standard
value
R A


A: Move the injection pump toward the engine.
R: Move the injection pump away from the engine.
12. Install the distributor head bolt.
Distributor head bolt torque N·m (kg·m /lb·ft)
29 (3.0/22)



ENGINE CONTROL (4JA1T(L) only)
Idling Speed Adjustment
1. Set the vehicle parking brake and chock the drive wheels.
2. Place the transmission in neutral.
3. Start the engine and allow it to idle until the coolant temperature reaches 70 - 80 °C (158 - 176 °F).


4. Disconnect the engine control cable from the control lever.
5. Set a tachometer to the engine.
6. Check the engine idling speed. If the engine idling speed is outside the specified
range, it must be adjusted.
Engine Idling Speed : 730 ± 25 rpm



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