GRIP AS 5121255 - Caterpillar

1. Disconnect pressure line (2) from the fuel ratio control.2. Remove lockwires (3).3. Remove two bolts (4) and the fuel ratio control (1) from the housing adapter.4. Inspect the gasket for damage and make a replacement if necessary. 5. Install fuel ratio control (1) in the housing adapter.6. Install a new lockwire and seal.7. Connect pressure line (2) to the fuel ratio control.8. Make an adjustment to the fuel ratio control. See FUEL RATIO CONTROL SETTING in TESTING AND ADJUSTING section.Disassemble Fuel Ratio Control
start by:a) remove fuel ratio control 1. Remove three bolts (3) and cover (4).2. Remove two bolts (2) and cover (1). Remove the spring from under cover (1). 3. Remove pin (6) from the bolt.4. Remove washer (5).5. Remove diaphragm (7) from the retainer. 6. Remove retainer (10), spring (9) and bolt (11) from cover (8).Assemble Fuel Ratio Control
1. Install the retainer on bolt (1).2. Install spring (2) on the bolt.3. Install diaphragm (3) on the retainer as shown.4. Install the bolt through cover (4) as shown. 5. Install washer (6) on the bolt. Install pin (5) in the bolt. 6. Install the spring and cover (7).7. Install two bolts (8).8. Install cover (9) and the three bolts that hold it.end by:a) install fuel ratio control