Throttle Body: Service and Repair

REMOVAL

WARNING: DO NOT SMOKE OR CARRY LIGHTED TOBACCO OR OPEN FLAME OF ANY TYPE WHEN WORKING ON OR NEAR ANY FUEL-RELATED COMPONENTS. HIGHLY FLAMMABLE MIXTURES ARE ALWAYS PRESENT AND MAY BE IGNITED. FAILURE TO FOLLOW THESE INSTRUCTIONS MAY RESULT IN PERSONAL INJURY.

CAUTION: The throttle body bore and plate area have a special coating and cannot be cleaned.

NOTE: Gasoline engine shown, natural gas is similar.

1. Remove the air cleaner outlet tube.







2. Disconnect the Throttle Position (TP) sensor electrical connector.







3. Disconnect the accelerator cable and the speed control actuator cable.







4. Disconnect the throttle return spring.







5. Remove the four bolts and the throttle body.

NOTE: Discard the Throttle Body (TB) gasket.

INSTALLATION







1. Install a new Throttle Body (TB) gasket, the throttle body, and the bolts.
^ Tighten the bolts in two stages.
^ Stage 1: Tighten to 9 Nm (80 Lb-In).
^ Stage 2: Rotate an additional 90 degrees.







2. Connect the throttle return spring.







3. Connect the accelerator cable and the speed control actuator cable.







4. Connect the Throttle Position (TP) sensor electrical connectors.
5. Install the air cleaner outlet tube.