Link Belt 700X2 Excavator Shop Manual

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Summary Section
Main Equipment Table
Lower Component
Travel Unit
1. Take-up Roller
2. Upper Roller
3. Lower Roller
4. Recoil Spring
5. Shoe
Upper Component
1. Swing Unit
Engine-related
1. Engine
2. Muffler
3. Air Cleaner (double element)
4. Radiator
Hydraulic Device
1. Hydraulic Pump
2. Pump P-Q Diagram
Control-related
1. Control Valve
2. Solenoid Valve (5 stack)
3. Remote Control Valve
4. Remote Control Valve Characteristic Diagram
5. Cushion Valve (heat circuit, with shuttle valve)
6. Selector Valve
7. Center Joint
Backhoe Attachment
1. Cylinder
2. Attachments
Equipment Layout Diagram
Main Equipment Layout
Consumable Part Layout
Standard Machine Option List
List of Optional Components

Hydraulics Section
Hydraulic Equipment Layout
Overall View
Pump Chamber Hydraulic Equipment Layout
Swing Body Center Section Hydraulic Equipment Layout
Housing Left Side Hydraulic Equipment Layout
Layout of Hydraulic Equipment in Cab
Port Diagram
Pump
1. Hydraulic Pump (standard model)
Valves
1. Control Valve
2. 5 Stack Solenoid Valve
3. 2 Stack Solenoid Valve
4. Remote Control Valves (upper, travel)
5. Cushion Valve
6. HBCV (Option for Export, Europe)
Manifolds
1. Manifold Under Cab
2. Manifold (accumulator section)
3. Manifold
Motors
1. Swing Motor
2. Travel Motor
3. Center Joint
Pilot Hose Connection Diagram
Pilot P and T Lines
Pilot Control Line
Pilot Control Line (2-way selector valve)
Function List
Function Table
Explanation of New Functions
1. Swing Relief Cut-off Control
2. Option Line Flow Adjustment Control

Explanation of Hydraulic Circuit and Operations (standard model)
Travel Circuit
Travel Low-speed Circuit
Travel High-speed Circuit
Straight Travel Circuit
Swing Circuit
Swing Relief Cut-off Control Circuit
Swing Priority Circuit
Swing Brake Circuit
Swing Parking Circuit (lever in neutral)
Swing Parking Circuit (brake release)
Swing Parking Circuit (machine stop)
Boom Circuit
Boom-up Circuit (single operation) (with / without HBCV)
Boom-up Circuit (compound boom-up + bucket)
Boom-up Circuit (compound boom-up + swing)
Boom-down Regenerative Circuit (with / without HBCV)
Boom-down Load Holding Valve Circuit
Arm Circuit
Arm-out Circuit (with / without HBCV)
Arm-in Forced Regenerative Circuit
Arm-in Load Holding Valve Circuit
Bucket-open Circuit
Bucket Circuit
Bucket Close
Negative Control Circuit
Negative Control Circuit
Horsepower Boost Circuits
High load Horsepower Boost Circuit
Other Circuits
Cushion Circuit (arm-out operation)
Cushion Circuit (arm-out operation stopped)
Cushion Circuit (arm-out → arm-in operation)
Heat Circuit（lever in neutral）
Auto Pressure Boost Circuit (bucket close)

Explanation of Hydraulic Circuit and Operations (option)
Option Circuits
Breaker circuit (independent operation)
Double-acting circuit (hydraulic fork)
Multi-purpose circuit (breaker circuits)
Multi-purpose circuit (2 pumps flow circuit)
2nd option circuit (hydraulic rotation fork)
Main Equipment Structure and Operation Explanation
Pump
1. Hydraulic Pump
2. Regulator
3. Gear Pump
Motor
1. Travel Motor
2. Swing Motor
Valve
1. Control Valve
2. 5 Stack Solenoid Valve Operation Explanation
3. Upper Pilot Valve (remote control valve)
4. Travel Pilot Valve (remote control valve)
5. Cushion Valve
Hydraulic Drive Fan Motor
1. External Shape Diagram
2. Internal Structure Diagram
3. Operation principles

Electrics Section
Explanation of New Functions
Work Mode Select Switch
The Throttle Volume and Work Mode Select Switch are Linked!!
Computer Connection Method
Monitor Changes
Pilot Pressure Switch Changed to Pressure Sensor
Pump Electromagnetization Proportional Valve
1. Horsepower Control Proportional Valve
2. P1 Flow Control Proportional Valve
System Control for Energy Saving
1. Reduced Fuel Consumption Through Transient Load Reduction Control
2. Reduced Fuel Consumption Through Swing Relief Cut Control
Electrical Equipment Layout Diagram
Overall View
1. Main Unit Left Side Layout Diagram (radiator chamber)
2. Engine Section Layout Diagram
3. Main Unit Right Side Layout Diagram (pump chamber)
4. Main Unit Center Section Layout Diagram
5. Cab Layout Diagram 1
6. Layout Around Operator’s Seat
Stand Alone Parts Diagram
Main Equipment Structural Diagrams
Connection Connector Pin Layout
1. Computer A
2. Monitor
Electrical Circuit Diagram
Overall View
1. Sequence Circuit Diagram
Block Diagram
1. Computer A
2. Computer S
3. ECM
4. Monitor Display
5. Air Conditioner
6. Lever Lock
7. Horn
8. Hydraulic motor fan

9. Mounting Counterweight
10.Working Light
11. Option
12. Others
13. Electrical Symbol List
Electrical Connector Wiring Diagram
Wire Harness
1. Main Frame Harness
Cab
1. Cab Main Harness
2. Cab Sub Harness
3. In Cab
4. Engine Harness
Console
1. Console Right Harness
2. Console Left Harness
Electrical Parts and Wiring Assembly Diagram
Main Frame
Cab
Explanation of Functions and Operations
Explanation of Electrical Functions
Engine Speed Control
1. Throttle Control
2. Idling Control (auto / one-touch)
3. Idling Start
4. Auto warm up
Engine Start / Stop Control
1. Engine Start / Stop Judgment
2. Power-cut Delay
3. Engine Emergency Stop
4. Neutral Start
Pump Control
1. Work Mode Control
2. Pump Horsepower Boost Control
3. Pump Horsepower Cut Control

Swing
1. Swing Brake
2. Swing Free Swing (Option for North America)
3. Swing Lock (for maintenance)
4. Swing Relief Cut
Travel
1. Travel Speed Switchover
2. Travel Alarm
Valve Control
1. Lever Lock
2. Solenoid Sticking Prevention
3. Pressure Boost Control
Monitor Control
1. Bar Graph (coolant temperature gauge, oil temperature gauge, fuel gauge)
Accessories
1. Horn
2. Working Light
3. Wiper and Washer
4. Room Lamp
5. Radio Mute
Others
1. Anti-theft
2. Battery Save Function
3. Alternator Power Generation Detection
4. Overload Alarm (Option for Europe)
5. Control of Hydraulic Driven Fan
Options
1. Option Line Control
2. Option Line Control
3. Feed Pump Automatic Stop
4. Return Filter Clogging Detected
5. Beacon
Service Support
Screen Operations
1. Screen Shift
Screen Display List
1. CHK (status display) Screen List
2. DIAG (trouble diagnosis) Screen