966G Wheel Loader and 972G Wheel Loader Braking System Caterpillar

Illustration 1	g00103581
(1) Return ports to the hydraulic tank. (2) Supply ports from the brake accumulator charging valve. (3) Supply ports to the service brakes.

(A) Height of installed valve ... 30.2 mm (1.19 inch)

(B) Height of the valve with the service brake in the FULLY APPLIED position ... 22.4 mm (.88 inch)

Service brake pressure

128-2993 Brake Control Valve (Service) ... 4310 ± 350 kPa (625 ± 50 psi)

169-3504 Brake Control Valve (Service) ... 4690 ± 350 kPa (680 ± 50 psi)

200-3199 Brake Control Valve (Service) ... 4690 ± 350 kPa (680 ± 50 psi)

Note: The output pressure of the upper port is higher than the output pressure of the lower port. Refer to table 1 that follows for the value of the pressure difference.