KIT OVERHD 0300132 - Caterpillar

LOCATION OF THE BRAKE PEDALS
3. Supply tank for master cylinder. 9. Left pedal. 14. Right pedal.
To prevent possible personal injury, always install the anti-pivot link to keep the machine straight, before any work is done on the machine. With the parking brake on, the drive shaft does not turn but the differential gears, in the drive to the front wheels, can let the wheels turn in opposite directions which will turn the machine.
The hydraulic pump oil for the steering system also operates the power brakes (when the engine is running) when either left pedal (9) or right pedal (14) is pushed for wheel brake application.The oil from steering pump section (17) goes to flow control valve (13). This valve lets only 11 U.S. gpm (42 liter/min) of the pump oil go to steering control unit (2). The hydraulic pump oil from the steering control unit goes to the power cylinder part of power and master cylinder (8).
LOCATION OF POWER AND MASTER CYLINDER
5. Oil line from steering control unit to power cylinder. 8. Power and master cylinder for the wheel brakes. 10. Oil line from flow control valve to supply tank. 12. Oil line from relief valve to power cylinder. 13. Flow control valve.When a brake pedal is pushed, the pressure of the pump oil in the power cylinder increases approximately 300 psi (2050 kPa) for a movement. This pushes the power cylinder piston and the master cylinder piston. The master cylinder piston increases the pressure of the hydraulic fluid to brake calipers (7) and (18) for brake application on the wheels.The master cylinder, brake calipers (7) and (18) and the lines between them are a separate hydraulic system. Supply tank (3) is the reservoir for this system. The supply tank keeps the master cylinder full of hydraulic brake fluid. The brake pedal, when pushed, and the power cylinder can increase the pressure to the pistons in the brake calipers to more than 1400 psi (9630 kPa).Left brake pedal (9) has a connection to transmission neutralizer valve (15). The neutralizer valve is part of the transmission oil system. The neutralizer valve is in a pressure oil circuit to a clutch in the transmission. The normally closed neutralizer valve is opened when left brake pedal (9) is pushed to stop the machine. The open valve lets the oil in the circuit to the clutch run into the oil sump in the transmission and the clutch is released. With the clutch released the torque converter keeps turning when the brakes stop the wheels.Right brake pedal (14) activates the brakes only and does not have a connection to the transmission neutralizer valve.
TRANSMISSION NEUTRALIZER VALVE
9. Left pedal for wheel brakes. 15. Neutralizer valve for transmission. For more information on the transmission neutralizer valve, see 910 POWER TRAIN, Form SENR7987.Power And Master Cylinder For The Wheel Brakes (40Y1 to 40Y3333, 41Y1 to 41Y1225)
The brake hydraulic