2008/12/22 Caterpillar

Engine: Commercial with Mechanical Unit Injection

3126

Engine: Commercial with Mechanical Unit Injection

3114

3116

Industrial Engine: with Turbochargers

All

Industrial Engine:

3114

3116

3126

3126B

3176

3204

3208

3304 Diesel

3406 Diesel

3406C

3408

3408 Diesel

3412

C-10

C-12

C-15

C-16

C-9

Marine Engine:

3116

3126

3126B

3208

3304

3306

3406

3408

3412

C-12

C-9

Required Tooling

Use the 215-2592 Wastegate tool kit .

Procedure for Troubleshooting the Wastegate Canister

Note: This procedure can be completed while the turbocharger is installed on the engine or while the turbocharger is not installed on the engine.

1. Remove the silicone hose that is connected to the wastegate canister and install the test kit. Refer to Illustration 1.

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Illustration 1	g01717703
(1) Wastegate actuator (2) Test hose

2. Use the regulator to increase and decrease the air pressure. Do not exceed 138 kPa (20 psi). As the air pressure to the canister increases, the actuator rod will move. The movement of the rod causes the opening of the wastegate and the closing of the wastegate. While the actuator rod is moving, inspect the rod for damage or for bending.

3. If the actuator rod does not move, then the wastegate canister is faulty and the turbocharger needs to be replaced.

4. If the actuator rod moves, then the canister is operational.

5. Disconnect the test kit and install the silicone hose to the wastegate canister.