Page 1401 of 6020
ENGINE MECHANICAL (4JK1/4JJ1) 6A-41
Turbocharger (High Output)
Components
RTW 76ALF000401
Legend 1. Turbocharger Assembly Gasket
2. Turbocharger Assembly
3. Turbocharger Heat Protecter
4. W ater Feed and Return Pipe Gasket
5. W ater Feed and Return Pipe 6. Oil Feed and Return Pipe Gasket
7. Oil Feed and Return Pipe
8. Catalyst Converter Gasket
9. Catalyst Converter
BACK TO CHAPTER INDEX
TO MODEL INDEX
ISUZU KB P190 2007
Page 1402 of 6020

6A-42 ENGINE MECHANICAL (4JK1/4JJ1)
Removal
1. Drain the engine coolant.
2. Remove the engine cover.
3. Remove the intercooler. • Disconnect the BARO sensor harness
connector (2).
• Remove the two intake hoses.
• Remove the intercooler (1).
RTW 76ASH000501
4. Disconnect the vacuum hose from the
turbocharger actuator.
5. Remove the air intake duct from the turbocharge
r
and the air cleaner.
6. Remove the front exhaust pipe.
RTW 56ASH018301
Legend
1. Gasket
2. Front Exhaust Pipe (4 ×2 High Ride Suspention,
4 ×4)
3. Gasket
4. Front Exhaust Pipe (4 ×2 Except High Ride
Suspention)
7. Remove the heat protector of the turbocharger.
• Remove the mud cover of front RH fender skirt
(4×4 only).
• Loosen the bolt of Turbocharger bracket.
8. Remove the catalyst converter.
9. Remove the turbocharger bracket.
10. Remove the oil feed and return pipe.
11. Remove the water feed and return pipe from the turbocharger.
RTW 76ASH001001
12. Remove the turbocharger from the exhaust
manifold.
BACK TO CHAPTER INDEX
TO MODEL INDEX
ISUZU KB P190 2007
Page 1403 of 6020
ENGINE MECHANICAL (4JK1/4JJ1) 6A-43
Inspection
Wheel shaft axial play
Use a dial gauge to measure the wheel axle shaft pla
y
when a force of 12 N (1.2kg / 2.6 lb) is alternately
applied to both sides of the compressor wheel.
Axial play mm (in)
Standard 0.03 − 0.06 (0.0012 − 0.0024)
Limit 0.09 (0.0035)
LNW 21BSH022201
Wheel shaft and bearing clearance
Use a dial gauge to measure the clearance between the
wheel shaft and the bearing.
Clearance mm (in)
Standard 0.056 − 0.127 (0.0022 − 0.0050)
Limit 0.14 (0.0055)
LNW 21BSH022301
Legend
1. Oil Outlet
2. Oil Intake
Actuator operation
1. Install a vacuum pump (2) to the actuator (1).
LNW 71JSH000201
2. Operate the vacuum pump and apply vacuum
pressure to the actuator.
W orking vacuum pressure kPa (mmHg / psi)
52.8 (396 / 7.66)
BACK TO CHAPTER INDEX
TO MODEL INDEX
ISUZU KB P190 2007
Page 1404 of 6020

6A-44 ENGINE MECHANICAL (4JK1/4JJ1)
3. Place a vernier caliper on the end of the control
rod of actuator. Release the vacuum pressure and
check the control rod moves. Measure the length
of the control rod moving.
Standard length mm (in)
12 (0.48)
Installation
1. Install the gasket and the turbocharger to the
exhaust manifold. Temporarily tighten nuts.
2. Install the oil feed and return pipe and temporaril
y
tighten.
3. Tighten the turbocharger nuts to the specified torque.
Tightening torque: 27 N ⋅
⋅⋅
⋅
m (2.8 kg ⋅
⋅⋅
⋅
m / 20 lb ft)
4. Tighten the oil feed and return pipe bolts and nuts to the specified torque.
Tightening torque (Turbocharger side): 10 N ⋅
⋅⋅
⋅
m (1.0 kg ⋅
⋅⋅
⋅
m / 87 lb in)
Tightening torque (Crank case side): 25 N ⋅
⋅⋅
⋅
m (2.5 kg ⋅
⋅⋅
⋅
m / 18 lb ft)
5. Install the water feed and return pipe to the turbocharger.
Tightening torque: 25 N ⋅
⋅⋅
⋅
m (2.5 kg ⋅
⋅⋅
⋅
m / 18 lb ft)
6. Install the heat protector to the turbocharger. Tightening torque: 10 N ⋅
⋅⋅
⋅
m (1.0 kg ⋅
⋅⋅
⋅
m / 18 lb ft)
7. Install the turbocharger bracket.
8. Install the catalyst converter.
Tighten the nuts to the specified torque.
Tightening torque: 27 N ⋅
⋅⋅
⋅
m (2.8 kg ⋅
⋅⋅
⋅
m / 20 lb ft)
9. Install the mud cover of front RH fender skirt (4 ×4
only).
10. Install the front exhaust pipe.
Tighten the nuts to the specified torque.
Tightening torque
Exhaust Manifold Side: 67 N⋅
⋅⋅
⋅m (6.8 kg⋅
⋅⋅
⋅m / 49 lb ft)
Exhaust Pipe Side: 43 N
⋅
⋅⋅
⋅
m (4.4 kg ⋅
⋅⋅
⋅
m / 32lb ft)
11. Install the intercooler. • Install the intercooler.
• Install the two intake hoses.
• Connect the BARO sensor harness connector.
12. Install the intake duct between the turbocharge
r
and the air cleaner.
Tightening torque: 6 N ⋅
⋅⋅
⋅
m (0.6 kg ⋅
⋅⋅
⋅
m / 52 lb in)
13.Replenish the coolant.
BACK TO CHAPTER INDEX
TO MODEL INDEX
ISUZU KB P190 2007
Page 1405 of 6020
ENGINE MECHANICAL (4JK1/4JJ1) 6A-45
Torque Specifications
RTW 76ALF000501
BACK TO CHAPTER INDEX
TO MODEL INDEX
ISUZU KB P190 2007
Page 1406 of 6020
6A-46 ENGINE MECHANICAL (4JK1/4JJ1)
Exhaust Manifold (High Output)
Components
RTW 76FMF000101
Legend
1. EGR Cooler
2. EGR Cooler Gasket
3. EGR Cooler Gasket 5. Heat Protector
6. Exhaust Manifold
BACK TO CHAPTER INDEX
TO MODEL INDEX
ISUZU KB P190 2007
Page 1407 of 6020

ENGINE MECHANICAL (4JK1/4JJ1) 6A-47
Removal
1. Drain the engine coolant.
2. Remove the turbocharger. • Refer to “Turbocharger”.
3. Remove the EGR cooler heat protector.
4. Disconnect the water hoses from the EGR coole
r
water pipes.
5. Remove the EGR cooler.
6. Remove the exhaust manifold.
RTW 76ASH002101
Inspection
• Inspection of the exhaust manifold. Inspect the
plane surface of the plane on which the
manifold and the cylinder head are to be
installed.
Manifold installation plane surface mm (in)
Standard 0.3 (0.01) or lower
Limit 0.5 (0.02)
Caution:
If the plane surface exceeds the limit, replace it.
LNW 21BSH022301
• Check a crack in the exhaust manifold visually.
Carefully inspect the turbocharger for abrasion and/o
r
excessive wear. Make any necessary adjustments,
repairs, and/or part replacements.
Installation
1. Put the gasket in to install the exhaust manifold.
• Tighten up with the 8 nuts according to the
order given in the illustration.
Tightening torque: 52 N ⋅
⋅⋅
⋅
m (5.3 kg ⋅
⋅⋅
⋅
m / 38 lb ft)
Caution:
Do not tighten up too much because it hampers
expansion and contraction due to the heat from the
manifold.
RTW 76ASH002201
BACK TO CHAPTER INDEX
TO MODEL INDEX
ISUZU KB P190 2007
Page 1408 of 6020
6A-48 ENGINE MECHANICAL (4JK1/4JJ1)
2. Install the EGR cooler.
• Install the gaskets.
• Install the EGR cooler.
• Temporary tightening order.
1 →2→ 3→ 4→ 5→ 6
• Fully tightening order.
3 →4→ 5→ 1→ 2→ 6
Tighten the nut and bolts to the specified torque.
Tightening torque: Nuts and bots 1-5: 27 N·m (2.8 kg·m / 20 lb ft)
Bolt 6: 52 N·m (5.3 kg·m / 38 lb ft)
6
543
1
2
RTW 76FSH000201
3. Install the water hoses to the EGR cooler water
pipes.
4. Heat protector.
Tighten the bolts to the specified torque.
Tightening torque: 25 N·m (2.5 kg·m / 18 lb ft)
RTW 76FSH000101
5. Install the turbocharger.
• Refer to “Turbocharger”.
6. Replenish the engine coolant.
BACK TO CHAPTER INDEX
TO MODEL INDEX
ISUZU KB P190 2007