John Deere 6620, SideHill 6620, 7720 and 8820 Combine "Hydraulic Operation and Tests" - Technical Manual

Name: John Deere 6620, SideHill 6620, 7720 and 8820 Combine "Hydraulic Operation and Tests" - Technical Manual
Brand: John Deere
SKU: SKU17989
Price: 14.99 USD
Availability: InStock

This is the "hydraulic operation and tests" section of the John Deere 6620, SideHill 6620, 7720 and 8820 combine technical manual.

SPECIFICATIONS AND SPECIAL TOOLS

HYDRAULIC SYSTEM OPERATION

General Information

Overall Hydraulic System Schematic

Header Lift System

Reel Lift System

Reel/Bert Pickup Drive

Variable Speed Feeder House (6620, 7720, and 8820 Combines)

Variable Speed Feeder House (SideHill 6620 Combine)

Unloading Auger Swing

Posi-Torq Cylinder Drive

Posi-Torq Ground Drive

HYDRAULIC SYSTEM TESTS

General Information

Glossary and Description of Parts and Terms

Combine Hydraulic System Diagram

Hydraulic Oil Lines and Hoses

Preliminary Checks

Using Test Equipment

Checking Hydraulic Oil Temperature

How to Use Step-By-Step Hydraulic Diagnosis Charts

Index of Step-By-Step Hydraulic Diagnosis Charts

RESERVOIR

HYDRAULIC PUMPS

Main Hydraulic Pump

Hydrostatic Drive Reel or Belt Pickup Pump

HYDRAULIC VALVES

Main System Control Valve

Hydrostatic Drive Reel or Belt Pickup Flow Control Valve

Unloading Auger Swing Flow Control Plug

Unloading Auger Swing Control Valve

HYDRAULIC CYLINDERS

Header Lift Cylinders and Reel Lift Slave Cylinder

Hydraulic Reel Lift Cylinders

Unloading Auger Swing Cylinder

Variable Speed Feeder House Control Cylinder (SideHill 6620 Only)

HYDRAULIC MOTORS

Hydrostatic Drive Reel Motor

Hydrostatic Drive Belt Pickup Motor

ACCUMULATOR

Pages: 162

Years and Serial Numbers: Covers all years and serial numbers

Models: 6620, SideHill 6620, 7720 and 8820 Combines

Make: John Deere

Manual Code: TM-1202

Manual Type: Technical Manual

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John Deere 6620, SideHill 6620, 7720 and 8820 Combine "Hydraulic Operation and Tests" - Technical Manual

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