Caterpillar D7R Series II Track-Type Tractor Hydraulic System Manual

RENR3661-01 August 2002 D7R Series II Track-Type Tractor Hydraulic System AFG1-Up (Machine) BPK1-Up (Machine) BNM1-Up (Machine) BRP1-Up (Machine) ACS1-Up (Machine) ADW1-Up (Machine) Finger Tip Control (FTC) © 2002 Caterpillar All Rights Reserved Printed in U.S.A. RENR3661-01 16 Page, MDW

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1 G Hydraulic System (with Ripper Arrangement Table 2 B Table 1 A 21 E J 2 K 22 21 3 N 20 9 C 7 4 L 8 Y Ripper Raise (Pilot Valve) Table 3 Hydraulic System (Pressure Taps) 19 18 5 D D Pilot Supply (Pressure Tap after Pressure Reducing Valve) 17 P Q R S Y E Implement Pump Discharge (Pressure Tap on Manifold under Floorplates, Labeled HB) 6 F04360 1 20 A Hydraulic System (with Winch Arrangement Table 5 B G Table 4 2 J E K H RENR3661-01 16 Page, B + W, MDW 4 11 9 N 12 L C 3 10 7 13 M 19 YY Winch Freespool (Pilot Valve) 14 18 Table 6 U 8 5 17 15 T D XX YY 16 R S P Q V 6 W F04359 Hydraulic System (Lines and Pilot Valves) Item Description G Signal to Pump H Return J Discharge (Pump) K Flushing Line (Pump) L Air Vent M Air Relief N Suction P Tilt Left Q Tilt Right R S Bulldozer Tilt (Pilot Valve) Bulldozer Lift (Pilot Valve) T Lift Cylinder (Lower) U V Lift Cylinder (Raise) Pilot Supply W X Pilot Drain Ripper Tip (Pilot Valve) Hydraulic System (Components) Item Description 1 Hydraulic Pump – Piston 2 Dual Tilt Cylinders and Lines (Option) 3 Bulldozer Lift Cylinders 4 Quick Drop Valve 5 Single Tilt Cylinder 6 7 Pilot Valve – Bulldozer Oil Filter – Case and Drain 8 9 Hydraulic Tank Oil Filter (Implement Return Port) 10 Breather Valve 11 12 Valve Stack Main Relief Valve 13 14 Bulldozer Lift Control Valve Bulldozer Tilt Control Valve 15 16 Ripper Lift Control Valve Ripper Tip Control Valve 17 Pilot Valve (Ripper) 18 Shutoff Valve (Ball Valve) 19 Accumulator (Pilot Circuit) 20 Pressure Reducing Valve 21 Ripper Lift Cylinders 22 Ripper Tip Cylinders W Item Description A Implement Pump Signal (Pressure Tap on Manifold under Floorplates, Labeled HA) B Implement Pump Discharge (Pressure Tap at Pump) C Case Drain Return (Pressure Tap at Filter) Hydraulic System (Lines and Pilot Valves) Item Description G Signal to Pump H Return J Discharge (Pump) K Flushing Line (Pump) L Air Vent M Air Relief N Suction P Tilt Left Q R Tilt Right Bulldozer Tilt (Pilot Valve) S Bulldozer Lift (Pilot Valve) T Lift Cylinder (Lower) U V W Lift Cylinder (Raise) Pilot Supply Pilot Drain XX Winch (Pilot Valve) Hydraulic System (Components) Item Description 1 Hydraulic Pump – Piston 2 Dual Tilt Cylinders and Lines (Option) 3 Bulldozer Lift Cylinders 4 Quick Drop Valve 5 Single Tilt Cylinder 6 Pilot Valve – Bulldozer 7 Oil Filter – Case and Drain 8 9 Hydraulic Tank Oil Filter (Implement Return Port) 10 Breather Valve 11 12 Valve Stack Main Relief Valve 13 14 Bulldozer Lift Control Valve Bulldozer Tilt Control Valve 15 16 Winch Control Valve Pilot Valve (Winch) 17 Shutoff Valve (Ball Valve) 18 Accumulator (Pilot Circuit) 19 Pressure Reducing Valve 20 Winch Hydraulic System (Pressure Taps) Item Description A Implement Pump Signal (Pressure Tap on Manifold under Floorplates, Labeled HA) B Implement Pump Discharge (Pressure Tap at Pump) C Case Drain Return (Pressure Tap at Filter) D Pilot Supply (Pressure Tap after Pressure Reducing Valve) E Implement Pump Discharge (Pressure Tap on Manifold under Floorplates, Labeled HB)

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