FAN 1352407 - Caterpillar

Do not disconnect any air lines from the brake control valve until the air pressure is zero.
2. Put identification on all air lines and electric wires as to their location on the brake control valve and switches. 3. Disconnect five air lines (1), (2), (3), (5) and (6). Disconnect wires (4) and (7) from the pressure indicator switch and the stop light switch, respectively. 4. Disconnect spring (11) from pedal. Remove cotter pin (9) from pin (8) and bracket (10).5. Remove pin (8) from bracket and pedal. Remove three bolts (13).6. Remove brake control valve (12).Install Brake Control Valve (140G & 130G Standard Equipment)
1. Put brake control valve (5) in position on the machine. Install the bolts (6) that hold bracket (3) and the brake control valve to the machine.2. Put pedal in position on bracket and install pin (1) to hold pedal to bracket. Install cotter pin (2) in pin (1).3. Connect spring (4) from floor plate to pedal. 4. Connect air lines (7) to their correct location on the brake control valve.5. Connect wires (9) to their correct location on the stop light switch. Connect two wires (8) to their correct location on the pressure indicator switch.6. Make an adjustment to the screw in the frame under the pedal to get valve stem movement of .34 .03 in. (8.6 0.8 mm) with the pedal in the "DOWN" position. See Form No. REGO1602-01.Disassemble Brake Control Valve (140G & 130G Standard Equipment)
start by:a) remove brake control valve 1. Remove pressure indicator switches (2) and stop light switch (1) from body. 2. Remove four bolts (3), cover (4) and exhaust valve assembly from body. Remove retainer. 3. Remove snap ring (6) with tool (A), seat (5), spring (8) and valve (7). Remove O-ring from seat (5). 4. Remove screw (9), nut (15), retainer (13), spring (14), piston assembly (12), diaphragm (11) and spring (10) from body. 5. Remove nut (19), seat (18) and O-ring seal (17) from piston (16). Remove O-ring seal from piston. 6. Remove bolts (20) and make a separation of valve housings. 7. Remove piston (22) and spring (23) from valve housing. Remove O-ring seal (21) from piston. 8. Remove snap ring (24) with tool (B). Remove piston assembly from valve body. 9. Remove snap ring (25) from piston assembly with tool (C). Remove seat (26) and spring (27) from valve (28). Remove O-ring seal from seat (26).Assemble Brake Control Valve (140G & 130G Standard Equipment)
1. Make a replacement of