Isuzu KB P190. Manual — part 336

EXHAUST SYSTEM 6F – 11

INSPECTION

4JA1T(L)

Vacuum switch valve (VSV)

Use a circuit tester to measure the V.S.V. resistance.

V.S.V Resistance

Ω at 20°C

37 ~ 44

If the resistance is not within specification, replace it.

EGR Valve

Apply vacuum to the EGR valve, check to see the valve

operation.

Negative

Pressure

4JA1TC/4JH1TC

RTW46ESH000301

EVRV

Use a circuit tester to measure the EVRV resistance.

EVRV Resistance

Ω at 20°C

14

If the resistance is not within specification, replace it.

EGR Valve

Apply vacuum to the EGR valve, check to see the valve

operation.

Negative Pressure 4JH1TC

Less than 250 mmHg

Not operation

More than 300 mmHg

Operation

Negative Pressure 4JA1TC

Less than 100 mmHg

Not operation

More than 170 mmHg

Operation

Less then 180 mmHg

Not operation

More than 240 mmHg

Operation

6F – 12 EXHAUST SYSTEM

EGR COOLER (4JA1TC/4JH1TC EURO-III MODEL)

REMOVAL AND INSTALLATION

RTW46EMF000201

Removal Steps

1. Bolt

2.

Gasket

3. Bolt

4. Gasket

5.

Bolt

6.

Bolt

7. EGR Pipe Assembly

8. Gasket

9.

Bolt

10. EGR Cooler Assembly
11.

Gasket

12. EGR Cooler Adapter

Removal

1. Bolt

2. Gasket

3. Bolt

4. Gasket

5. Bolt

6. Bolt

7. EGR Pipe Assembly

8. Gasket

9. Bolt

10. EGR Cooler Assembly

11.Gasket

12.EGR Cooler Adapter

EXHAUST SYSTEM 6F – 13

RTW46EMF000901

Installation steps

1. EGR Cooler Adapter

2.

Gasket

3. EGR Cooler Assembly

4. Gasket

5.

Bolt

6. EGR Pipe Assembly

7. Bolt

8. Bolt

9.

Gasket

10. EGR Valve Assembly
11.

Bolt

12. EXH Manifold
13.

Gasket

14.

Bolt

6F – 14 EXHAUST SYSTEM

Installation

1. EGR Cooler Adapter

2. Gasket

3. EGR Cooler Assembly

4. Bolt

Tighten the bolts to the specified torque.

EGR adapter bolt torque

N

⋅m(kg⋅m/lb ft)

27(2.8/20)

5. Gasket

6. EGR Pipe Assembly

7. Bolt

Tighten bolts temporarily.

8. Bolt

Tighten bolts temporarily.

9. Gasket

10. Bolt

Tighten bolts temporarily.

11.Gasket

12.Bolt

Tighten bolts temporarily.

Finally tighten all bolts to the specified torque.

Confirm that there is no misalignment on the sealing

surface.

Bolt torque (Cooler-pipe) N

⋅m(kg⋅m/lb ft)

27(2.8/20)

Bolt torque (Cooler-bracket) N

⋅m (kg⋅m/lb ft)

24(2.4/17)

Bolt torque (Adapter-EGR valve) N

⋅m (kg⋅m/lb ft)

27(2.8/20)

Bolt torque (Pipe-manifold) N

⋅m (kg⋅m/lb ft)

27(2.8/20)