LOCK 5M1776 - Caterpillar

1. Remove two bolts (1).2. Remove air-fuel ratio control and gasket.Install Air - Fuel Ratio Control
1. Put gasket (2) in position. Make an alignment with the lever in the shutoff housing with the plunger in the air-fuel ratio control.2. Install air-fuel ratio control (1) and the bolts that hold it.Disassemble Air - Fuel Ratio Control
start by:a) remove air-fuel ratio control 1. Remove solenoid (1) from the air-fuel ratio control. 2. Remove bolts (3) and covers (2) and (4). Remove diaphragm (11) and piston (17). Remove gasket (16) from cover (4).
Spring force is present. Slowly loosen the two bolts to release the force.
3. Remove two bolts (5), cover (6) and spring (15).
Spring force is present. Hold diaphragm assembly in position and remove pin (14).
4. Remove pin (14) and slowly release the spring force.5. Remove spring (8) and bolt (7) from housing (12).6. Remove washer (10) and diaphragm (9) from retainer (13).Assemble Air - Fuel Ratio Control
1. Assemble washer (3), diaphragm (2) and retainer (1). 2. Install bolt (4) in housing (10).3. Install spring (5), diaphragm assembly (11) and pin (6) in housing (10).4. Install spring (22) in cover (7). Install cover (7) on housing (10) with the two bolts (16) that hold it. 5. Install gasket (13) on cover (8). Install piston (14) to cover (8). Install diaphragm (15) in cover (9).6. Put covers (8) and (9) in position on cover (7) with the bolts that hold them. 7. Install solenoid (17) on the air-fuel ratio control.end by:a) install air-fuel ratio control For adjustment of air-fuel ratio control, see TESTING AND ADJUSTING.