1.30 HYDRAULICS Control valve (25) Key to control valve (continued) The control valve consists of up to five individual spool valves, with common pressure and return lines, linked together by an inlet and outlet cover. The inlet (PVSP) (36) contains a priority valve (43) (steering) module and brake accumulator charge valve (44). The spools, outlet cover and PSVP are secured together with tie bolts. The individual components of the valve described are (26) to (44).
13 Tie bolt 14 Washer 15 Nut 16 LS Shuttle Valve (37) 17 Pressure supply (36) 18 Brake and Accumulator Charge valve (BAC) (44) 19 Steering Valve (22) 20 Electric module (38, 40) 21 Test Point 4 (68) 22 2nd Service Couplings (60) 23 2nd Service Couplings (60) 24 Diverter Valve (56) 25 Diverter Valve (56) 26 Load Control Valve (55) 27 Lift Cylinder (54) 28 Relief valve, crowd back (39) 29 Load Control Valve (52) 30 Crowd Cylinder (51) 31 Relief valve, crowd forward (36) 32 Test {Point 5 (69) 33 Extension Cylinder (49) 34 Load Control Valve (50) 35 Relief valve, main system (32) 36 Pilot pressure regulator (34) 37 Hydraulic Tank (1) Key to control valve NOTE:
Numbers in bold type refer to identification numbers on main hydraulic schematic. 1 Outlet section (PVP) (26) 2 Test Point 1 (65) 3 Boom extend/retract section (27) 4 Crowd/compensator section (28) 5 Boom lift/lower section (29) 6 1st auxiliary section (30) 7 2nd auxiliary section (31) 8 Manual operation module 9 Brake and Accumulator Charge valve (BAC) (44) 10 Steering Priority Valve (42) 11 Inlet Section (PVSP) (36) 12 Brakes/Steering Priority Valve (12)