Technical Highlights
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Model: CASE 1150M Crawler Dozer
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System: Full Hydraulic Circuit Diagram
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File Info: PDF • 1 Page • Full-color schematic with component key
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Components Covered: Travel pumps, charge pump, hydraulic cylinders, pilot valves, filters, and relief systems
Coverage
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System Overview
• Hydraulic Pressure Flow (Main System)
• Charge Pump and Case Drain Lines
• Return Circuit to Tank and Filtration -
Hydraulic Component Groups
• Track Drive Motors and Pumps (Left & Right)
• Tandem Pump Assembly
• Lift, Tilt, Angle, and Ripper Circuits
• Pilot Pressure and Load Sensing Network -
Pressure Specifications
• 420 bar main line
• 30 bar return
• 390 bar working pressure
• 207 ±3.5 bar charge relief
• 400 ±5 bar pump outlet -
Component Index (partial highlights)
1. Track Drive Motor 34. High Pressure Cut-off
11. Park Brake Solenoid 40. Tilt Cylinder
33. Charge Pressure Relief 44. Equipment Valve
52. Circuit Relief / Anti-cavitation 58. Pilot Accumulator
61. Hydraulic Filter Bypass 66. Load Sense Orifice
Delivery
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