ISUZU Heavy Duty Machine Repair: Isuzu engine throttle valve Removal and installations

Isuzu engine throttle valve Removal and installations

This article is to explain how to disassemble and equip the Isuzu 4JJ1 Euro 4 N Series engine throttle valve

Removal

1. Remove the boost sensor connector(1) and harness clip.

2.Remove the air intake duct and hose.

Remove the duct on the intercooler side.

Remove the duct from the intake throttle valve with the hose attached.

3.Disconnect the intake throttle valve harness connector.

NOTE:

Make sure to hold the connector portion for removal.

Remove the rear cover with the connector attached.

Do not remove the rear cover separately.

Legend

1.Rear cover

2.Connector portion

4. Remove the intake throttle valve(2).

Legend1.Bolt

2.Throttle valve

3.Gasket

Installation

1. Install the intake throttle valve.

Install the gasket and intake throtte valve, and tighten at the specified torque.

Tightening torque:10 N-m(1.0kg-m/87 lb-in)2. Connect the intake throtle valve harness connector.

3. Install the air intake duct and hose.

NOTE: Firmly insert the hose without any twisting or misalignment, and tighten the clamp to the specified torque.

Install the duct and hose between the intake throttle valve and intercooler.

Use a new hose clamp, align it with the marking.

Tightening torque:8 N-m(0.8 kg-m/69 lb-in)

4. Install the connector(1) of the boost sensor and the harness clip.