This article mainly Install Isuzu of 4HJ1 N-Series Engine Inlet Manifold Removal
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Installation
1. Install the inlet manifold.
NOTE: Do not reuse the gasket.
Tightening torque:19 N-m(1.9 kgm/1
2. Install the inlet manifold cover.(Euro2 specification only)
Tightening torque:51Nm(5.2kg-m/38 lb-ft)
3. Install the oil cooler pipe.
· Apply engine oil to the O-ring.
a. Attach the oil cooler pipe, and temporarily tighten them in the order specified in the diagram.
Euro4 specification
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b. Securely tighten them at the specified torque in the order as shown in the diagram.
Tightening torque Nut:19N-m(1.9kg-m/14 lb-ft)
Bolt:25N·m(2.5kg-m/18 lb-ft)
Euro4 specification
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4. Install the injection pipe.
NOTE: Do not reuse the injection pipe.
a. Lightly tighten the sleeve nut with a hand so that it is attached airtight.
b. Securely tighten them at the specified torque in the order as shown in the diagram.
Tightening torque:30 N-m(3.1 kg-m/22 b-t)
5. Install the engine oil level gauge and guide tube.
· Apply soapy water to the O-ring.
Tightening torque:25N.m(2.5kg-m/18 lbt)
6. Connect the leak-off hose clamp.
Tightening torque:25 N.m(2.5kg-m/18 lbt)
7. Install the leak-off pipe.
a. Attach the leak-off pipe, and temporarily tighten them in the order specified in the diagram.
b. Securely tighten them at the specified torque in the order as shown in the diagram.
Tightening torque:25 N-m(2.5 kg-m/18 lb-t)
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8. Connect the engine harness clip.
Legend1. Clip2. Clip3. Clip
9. Install the EGR valve.(Euro4 specification only)
Refer to "EGR Valve and EGR Cooler"in Section
6F, Engine Exhaust.
10.Install the heater pipe.
11.Install the intake throttle valve.
Refer to "Intake Throttle Valve"in this Section.
12.Refill the engine coolant.
13.Connect the battery cable negative terminal.
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