Electronic Control System ISM and QSM11 Engines – 019-063   Internal Actuator Wiring Harness

Remove the rocker lever cover.

For the ISM engines refer to Procedure 003-011 in Troubleshooting and Repair Manual, ISM, ISM^e, and QSM11 Engines, Bulletin 3666322.

For the M11 engines refer to Procedure 003-011 in the Troubleshooting and Repair Manual, M11 Series Engines (STC, CELECT™, CELECT™ Plus Models), Bulletin 3666139.

If equipped, use a Torx® screwdriver to remove the locking capscrew that holds the Metri-Pack 12-pin connectors together.

Disconnect the engine harness from the internal actuator harness connector at the front or rear of the rocker lever housing.

Release the locking tabs on the internal actuator harness connector and push the connector back through the rocker lever housing.

If equipped disconnect the engine brake harness from the engine brake solenoids.

Disconnect the engine brake harness from the internal actuator harness at the 3-pin Deutsch connector.

Disconnect the internal actuator harness from each of the six injector solenoids.

Remove the five hold down capscrews securing the internal actuator harness to the rocker lever housing.

Replace or repair the internal actuator harness if there is an open circuit or a short circuit found under the protective covering of the harness body.

Clean the connector bore in the rocker lever housing.

Apply Lubriplate™, muti-purpose lubricant, to the external sealing ring to ease assembly.

Push the internal actuator harness connector through the rocker lever housing until the locking tabs lock into position on the front of the rocker lever housing.

Connect the connector of the internal actuator harness to the connector of the external actuator harness.

Connect the internal actuator harness to each of the six injector solenoids.

If the engine is equipped with a brake harness connect the engine brake harness to the internal actuator harness and the engine brake solenoids.

NOTE: If equipped with a 12-pin Metri-Pack keyed connector, align connector before the capscrew is tightened.

Install the locking capscrew with a Torx® screwdriver.

Tighten the capscrew.

CAUTION  Make sure the internal wiring harness is securely installed with the capscrews to the rocker lever housing. A loose internal wiring harness can be damaged by moving engine parts.

Install the five hold down capscrews securing the internal actuator harness to the rocker lever housing.

Install the rocker lever cover.

For the ISM engines refer to Procedure 003-011 in Troubleshooting and Repair Manual, ISM, ISM^e, and QSM11 Engines, Bulletin 3666322.

For the M11 engines refer to Procedure 003-011 in the Troubleshooting and Repair Manual, M11 Series Engines (STC, CELECT™, CELECT™ Plus Models), Bulletin 3666139.