Liebherr DPVG 108, DPVO 108, DMVD 165-108 Displacement Motor Service Repair Manual

Table of Content DPVG 108, DPVO 108, DMVD 165-108 Motor Repair Manual

• 1 Symbols and safety instructions
    • 1.1 Symbols in the technical description
        • 1.1.1 Identification of operational safety instructions
        • 1.1.2 Additional identifications
    • 1.2 Safety instructions
        • 1.2.1 General safety instructions
        • 1.2.2 Changes to the hydraulic unit
        • 1.2.3 Prevention of personal injuries
        • 1.2.4 Prevention of property damage
        • 1.2.5 Prevention of environmental damage

• 2 Variable displacement pump DPVG 108
    • 2.1 Structure of the variable displacement pump
        • 2.1.1 Hydraulic connections
        • 2.1.2 Main components
        • 2.1.3 Basic structure
            • Sectional view – Driving gear with regulation
            • Sectional view – Control with regulation
    • 2.2 Function of the variable displacement pump
        • 2.2.1 Hydraulic diagram
        • 2.2.2 Mechanical zero position
        • 2.2.3 Feed circuit
        • 2.2.4 Hydraulic zero position
        • 2.2.5 Control and regulation
            • Control and regulation sequence
        • 2.2.6 Pressure limiting of the high pressure
        • 2.2.7 Pressure cutoff – two-stage
        • 2.2.8 Pressure cutoff – one-stage
    • 2.3 Settings
        • 2.3.1 Overview of measuring points
        • 2.3.2 Setting – mechanical zero position
        • 2.3.3 Setting – feed-pressure valve
            • Preconditions:
            • Testing and setting
        • 2.3.4 Setting – hydraulic zero position
            • Preconditions:
            • Testing and setting
        • 2.3.5 Setting – high-pressure valves
            • Preconditions:
            • Block pressure cutoff
            • Testing and setting the HP valves
        • 2.3.6 Setting – two-stage pressure cutoff
            • Preconditions:
            • Testing and setting the pressure cutoff
            • Pressure stage 1
            • Pressure stage 2
        • 2.3.7 Setting – one-stage pressure cutoff
            • Preconditions:
            • Testing and setting the pressure cutoff

• 3 Variable displacement pump DPVO 108
    • 3.1 Structure of the variable displacement pump
        • 3.1.1 Hydraulic connections
        • 3.1.2 Main components
        • 3.1.3 Basic structure
            • Sectional view – Driving gear
            • Sectional view – Controller with regulator
    • 3.2 Function of the variable displacement pump
        • 3.2.1 Hydraulic diagram
        • 3.2.2 Control and regulation
            • Control and regulation sequence
        • 3.2.3 Pressure cutoff
    • 3.3 Settings
        • 3.3.1 Overview of measuring points
        • 3.3.2 Setting – Qmin
            • Preconditions:
            • Testing and setting
        • 3.3.3 Setting – Controller
            • Preconditions:
            • Testing and setting
        • 3.3.4 Setting – pressure cutoff
            • Preconditions:
            • Testing and setting the pressure cutoff

• 4 Double-variable displacement motor DMVD 165/108
    • 4.1 Description of variable displacement motor
        • 4.1.1 Hydraulic connections
        • 4.1.2 Main components
        • 4.1.3 Basic assembly
            • Sectional view – drive gear with regulation
            • Sectional view – controller with regulation
    • 4.2 Function of the double-variable displacement motor
        • 4.2.1 Hydraulic diagram
        • 4.2.2 Control and regulation
            • Procedure for control and regulation
        • 4.2.3 Drain valve
    • 4.3 Settings
        • 4.3.1 Summary of test points
        • 4.3.2 Adjustment – controller
            • Prerequisites:
            • Control and adjustment
            • Adjustment of controller 20 (VM 165)
            • Adjustment of controller 30 (VM 108)