VALVE GP-RELIEF 1257193 - Caterpillar

Illustration 1 g03868707
Left Side of Machine
(1) Control manifoldControl manifold (1) is on the left side of the machine. The left side compartment door provides access to the manifold.The ports on control manifold (1) are labeled for identification. Screed hoist ports are labeled with the prefix "SCD". Auger hoist ports are labeled with the prefix "AL".Note: Not all functions of control manifold (1) are discussed in the auxiliary section of the presentation. Functions that are not directly related to the auxiliary systems are discussed in the appropriate sections of this document.
Illustration 2 g03868708
Control Manifold
(2) Auger raise, solenoid
(3) Auger lower solenoid
(4) Parking brake solenoid
(5) Pressure reducing valve
(6) Screed power-lift solenoid
(7) Screed lower solenoid
(8) Screed raise, solenoid
(9) Screed-assist solenoid
(10) Relief valve
(11) Shift solenoidThe control manifold contains solenoids that are used in the auger, parking brake, screed, and shift systems.The following solenoids are on the bottom side of the control manifold:
Auger raise, solenoid (2)
Auger lower solenoid (3)
Parking brake solenoid (4)
Screed power-lift solenoid (6)
Screed lower solenoid (7)
Screed raise, solenoid (8)
Screed-assist solenoid (9)
Shift solenoid (11)The control manifold also contains relief valve (10) and one pressure reducing valve (5). The relief valve limits the pressure available to screed lower solenoid (7), screed raise, solenoid (8) and screed-assist solenoid (9). Pressure is limited to 7998 kPa (1160 psi). The pressure reducing valve limits the pressure available to parking brake solenoid (4) and shift solenoid (11). Pressure is limited to 5000 345 kPa (725 50 psi).