2007 ISUZU KB P190 engine oil

ENGINE MECHANICAL (4JK1/4JJ1) 6A-97
47. Install the A/C compressor adjust pulley.
Tighten the bolt and nut to the specified torque.
Tightening torque: bolt 25 N ⋅
⋅⋅
⋅
m (2.6 kg ⋅
⋅⋅
⋅
m/19 lb ft)
Tightening torque: nut 25 N ⋅
⋅⋅
⋅
m (2.6 kg ⋅
⋅⋅
⋅
m/19 lb ft)






RTW 56ASH010601
Legend
1. Bolt
2. Nut


48. Install the A/C compressor and connector.
Tighten the bolt to the specified torque.
Tightening torque: 44 N ⋅
⋅⋅
⋅
m (4.5 kg ⋅
⋅⋅
⋅
m / 33 lb ft)
49. Connect each connector. • Barometric Sensor
• EGR Valve
• Glow plug
• W ater temperature sensor
• Camshaft Position sensor
• Throttle Assembly

50. Install the turbocharger engine oil return pipe (1).
Tighten the bolt and nut to the specified torque.
Tightening torque: nut: 25 N ⋅
⋅⋅
⋅
m (2.6 kg ⋅
⋅⋅
⋅
m/19 lb ft)
bolt: 10 N ⋅
⋅⋅
⋅
m (1.0 kg ⋅
⋅⋅
⋅
m/87 lb in)





RTW 56ASH010701
51. Install the turbocharger engine oil feed pipe (1).
Tighten the bolt to the specified torque.
Tightening torque: bolt 23 N ⋅
⋅⋅
⋅
m (2.3 kg ⋅
⋅⋅
⋅
m/17 lb ft)




RTW 56ASH010801


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ISUZU KB P190 2007

6A-98 ENGINE MECHANICAL (4JK1/4JJ1)
52. Install the turbocharger water feed pipe.





RTW 56ASH019101
Legend
1. Turbocharger W ater Feed Pipe


53. Install the turbocharger water return pipe.






RTW 56ASH019001
Legend
1. Turbocharger W ater Return Pipe

54 Install the A/T oil cooler pipe bracket.
Refer to procedure for automatic transmission in this manual.
55. Install the catalyst converter.
Refer to procedure for Turbocharger and Exhaust Manifold in this manual.
56. Connect the front drive shaft. (4 ×4)
Refer to procedure for front propeller shaft in this manual.

57. Install the exhaust front pipe.
• Refer to procedure for “Exhaust System” in this
manual.
58. Install the EGR cooler. • Refer to procedure for “Exhaust System” in this
manual.
59. Install the EGR cooler water pipe. • Refer to procedure for “Exhaust System” in this
manual.
60. Install the EGR cooler heat protector. • Refer to procedure for “Exhaust System” in this
manual.
61. Install the cooling fan. • Refer to procedure for “Engine Cooling” in this
manual.
62.Install the A/C drive belt. • Refer to procedure for “Intake Manifold” in this
manual.
63. Install the radiator fan shroud. Upper and lower.
64. Install the radiator upper hose. • Refer to procedure for engine cooling in this
manual.
65. Install the harness bracket.
66. Install the fuel leak off hose (1), and the fuel injector connector (2).






RTW 76ASH000101


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ISUZU KB P190 2007

6A-100 ENGINE MECHANICAL (4JK1/4JJ1)
Torque Specifications



RTW 76AMF000201

Special Tools
ILLUSTRATION PART NO.
PART NAME
ILLUSTRATION PART NO.
PART NAME
5-8840-2820-0
Injection pipe oil seal installer
5-8840-0266-0
Angle gauge
5-8840-2816-0
Valve guide remover and installer



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ISUZU KB P190 2007

ENGINE MECHANICAL (4JK1/4JJ1) 6A-101
Piston and Connecting Rod
Components






RTW A56ALF001601
Legend 1. Piston Pin Snap Ring
2. Piston Pin
3. Piston Ring 4. Piston
5. Connecting Rod
6. Bearing

Removal
1. Demount the engine assembly.
Refer to “Engine Assembly”.
2. Remove the cylinder head cover.
Refer to “Cylinder Head Cover”.
3. Remove the camshaft assembly.
Refer to “Camshaft Assembly”.
4. Remove the cylinder head.
Refer to “Cylinder Head”.
5. Remove the gear case assembly.
Refer to “Gear Case Assembly”.
6. Remove the oil pan.
Refer to “Oil Pan” .
7. Remove the connecting rod cap.

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6A-102 ENGINE MECHANICAL (4JK1/4JJ1)
Note:
Sort the removed bearings according to cylinders b
y
using tags.



LNW 21BSH004901
8. Remove the piston and connecting rod.
• Remove carbon on the upper side of the
cylinder block with a scraper.
• Pull out the piston and connecting rod towards
the cylinder head.
Note:
Be sure not to damage the oil jet and cylinder block
when pushing out the connecting rod.
9. Remove the connecting rod bearing.
Note:
Sort the bearings in the order of cylinders when reusing
them so that they are not confused with the bearings o
f
other cylinders.
Disassembly
1. Remove the piston ring.
• Use ring pliers to remove the piston ring.
Note:
Sort the piston rings in the same order as the cylinders
when reusing them so that they are not confused with
the pistons and piston rings of other cylinders.




LNW 21BSH005101
2. Remove the snap ring.
3. Remove the piston pin.
Note:
Sort the disassembled piston pins, pistons and
connecting rods together in the same order as the
cylinders.







LNW 21BSH005201
4. Remove the connecting rods from the piston.
5. Clean the piston. • Carefully clean carbon that is adhered to the
head of the piston and the groove of the piston
ring.
Note:
Do not use a wire brush to clean the piston because it
scratches the piston.
Visually inspect the piston for cracks, burns and othe
r
excessive wear, and replace it if there is an
y
abnormality.


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ISUZU KB P190 2007

ENGINE MECHANICAL (4JK1/4JJ1) 6A-105




LNW 61ASH004501
• Use a thickness gauge to measure the piston
ring gap.
If the measured value exceeds the specified limit, the piston ring must be replaced.
Piston ring gap mm (in)
Standard Limit
1st compression ring 0.3 - 0.5
(0.0118 - 0.0197) 1.50
(0.059)
2nd compression ring 0.3 - 0.5 (0.0118 - 0.0197) 1.50
(0.059)
Oil ring 0.25 - 0.45
(0.0098- 0.0177) 1.50
(0.059)
Measure the clearance between the piston ring
groove and the piston.
• Remove carbon in the piston ring groove.
• Put the piston ring in the piston ring groove, use
a thickness gauge to measure the gap between
them.
• If the clearance between the piston ring groove
and the piston exceeds the limit, replace the
piston and the piston ring.

Piston ring and piston ring groove clearance mm (in)
Standard Limit
1st compression ring — ∗ — ∗
2nd compression ring 0.05 - 0.09
(0.0020 - 0.0035)1.50
(0.059)
Oil ring 0.03 - 0.07
(0.0012- 0.0028) 1.50
(0.059)
∗ Measurement is impossible







LNW 21BSH009501
9. Inspect the piston pin.
• Visually inspect the piston pin for cracks,
scratches and other damage, and replace it i
f
necessary.
• Use a micrometer to measure the oute
r
diameter of the piston pin. If the measured
value exceeds the limit, replace the piston pin.
Piston pin outer diameter mm (in)
Standard 33.995 – 34.000 (1.33838 – 1.33858)
Limit 33.970 (1.33740)




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6A-106 ENGINE MECHANICAL (4JK1/4JJ1)



LNW 21BSH009601
• Inspect to make sure that there is a resistance
to the extent which the piston can push the
piston pin lightly in normal temperatures.
• If it feels a large looseness or instability in
normal temperatures, replace the piston o
r
piston pin.






LNW 21BSH009701
• Measure the bush of the small edge of the
connecting rod. If the clearance of the bush inne
r
diameter and the pin diameter exceeds the limit,
replace the bush or connecting rod assembly, and
the pin.
Piston pin and connecting rod small end bushing
clearance mm (in)
Standard 0.008 - 0.020 (0.0003 - 0.0008)
Limit 0.05 (0.0020)







LNW 21BSH009801
10. Measure the clearance between the piston and
the piston pin.
•
Apply engine oil on the piston pin. Use your
finger to push it in the piston hole and rotate it.
If the pin smoothly rotates without instability,
the clearance is normal. If there is instability,
measure the clearance. If the clearance
exceeds the limit, replace the piston and the
piston pin.
Piston pin and piston pin hole clearance mm (in)
Standard 0.004 - 0.017 (0.0002 - 0.0007)
Limit 0.04 (0.0016)
11. Measure the connecting rod alignment.
• Use a connecting rod aligner to measure the
torsion and parallel level of the big end hole
and the small end hole. If the measured value
exceeds the limit, replace it.
Connecting rod alignment
(par length of 100 mm (3.94 in)) mm (in)
Standard Limit
Distortion 0.08 (0.003) or less 0.20 (0.008)
Parallelism 0.05 (0.002) or less 1.50 (0.060)


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ENGINE MECHANICAL (4JK1/4JJ1) 6A-107





LNW 21BSH010401
12. Measure the bearing oil clearance.
• Install the bearing to the connecting rod big
end.
• Tighten the bearing cap to the two step o
f
angular tightening method.
• Use an inside dial indicator to measure the
connecting rod bearing inside diameter.
Connecting rod bearing cap bolt torque:
N ⋅m (kg ⋅m / lb ft)
1st step 29.4 (3.0 / 22)
2nd step 45 deg
If the clearance between the measured bearing
inside diameter and the crankpin exceeds the
specified limit, the bearing and/or the crankshaft
must be replaced.
Crankpin and bearing clearance mm (in)
Standard 0.029 - 0.083 (0.0011 - 0.0033)
Limit 0.10 (0.0039)
Reassembly
1. Install the piston.
2. Install the connecting rod. • Install it so that the front mark of the head o
f
the piston, and the connecting rod forging mark
(projecting) on the connecting rod, both face in
the same direction.
• Install the snap ring of one side.







LNW 46ASH004601
Legend
1. Front Mark
2. Forging Mark (Projecting)

4. Apply enough engine oil on the piston pin, push it
in the piston and the connecting rod small edge.
5. Use snap ring pliers to install the snap ring.
Note:
Make sure that the snap ring is installed in the ring
groove properly. Make sure that the connecting rod
moves smoothly.






015R100001
6. Use ring pliers to install the piston ring.
• Install the piston rings in the order shown in the
illustration.
• Install 2nd and 1st compression rings in this
order so that the marks “2N” and “N” face
upward.

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ISUZU KB P190 2007