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MAN0450 (10/28/2005)
INDEX
A
Assembly
Attaching Backhoe to Tractor 33
Bucket Installation 31
Dipper Installation 31
General Assembly Instructions 30
Hydraulic Installation 31
Open-Center 31
Hydraulic Pump Installation 32
Install Optional Stabilizer Street Pad 34
Optional Equipment
3-Point Mount Kit
34
Mechanical Thumb (BH70-X) 34
Mechanical Thumb (BH80-X) 34
Pump Mounting Bracket Installation 34
Seat Installation and Adjustment 34
Stabilizer Installation 30
D
Dealer Check List
Delivery Check List (Dealer’s Responsibility) 35
Pre-Delivery Check List (Dealer’s Responsibility) 35
Dealer Service
BH70-X
Control Valve Linkage Adjustment 25
Hydraulic Valve Repair
Assemble
24
Disassemble 24
Load Check Valve Replacement 23
Port Relief Valves 23
Pressure Setting Adjustment 23
Replace Port Relief Valves 23
Spool Repair 24
System Relief Valve 23
BH80-X
Control Valve Linkage Adjustment
27
Hydraulic Valve Repair
Adjust System Relief Valve Pressure
25
Pressure Settings on Port Relief Valves 25
Replacing Port Relief Valves 25
Segment Replacement 25
Hydraulic Cylinder Repair
Boom & Dipper Cylinders
Assemble
28
Disassemble 28
Bucket & Stabilizer Cylinders
Assemble
29
Disassemble 29
General Hydraulic Repair Information 28
Swing Cylinder 29
Assemble 29
Disassemble 29
G
General
Abbreviations 51
Bolt Size Chart 51
Bolt Torque Chart 50
General Information 6
Introduction 2
Obtaining Replacement Manuals 2
Product Registration 2
Specifications 4
Table of Contents 3
Warranty
Product
53
Replacement Parts 54
O
Operation
3-Point Mount Removal 16
4-Point Sub-Frame Mounti Removal 16
BH80-X Swing Speed Control 14
Control Handle Operation 13
Disconnect Tractor Hydraulics 16
Dump and Return Cycle 14
Fill Bucket 14
General Operation 12
Mechanical Thumb 17
Position the Machine 13
Pre-Operation Check List (Owner’s Responsibility) 17
Removing and Storing Backhoe 16
Side Slope Trenching or Excavating 15
Start and Stop Operation 12
Start Excavation 14
Transporting 15
Transport and Swing Lock Installation 15
Trenching and Excavating 14
Owner Service
BH70-X Relief Valve
19
BH80-X Relief Valve 19
Cleaning
After Each Use
21
Periodically or Before Extended Storage 21
Hydraulic Hoses and Fittings 19
Lubrication 20
Optional Hydraulic Pump System 21
Trouble-Shooting 22
P
Parts
Index to Parts Lists 37
S
Safety
Delivery Check List (Dealer’s Responsibility) 35
Pre-delivery Check List (Dealer’s Responsibility) 35
Pre-Operation Check List (Owner’s Responsibility) 17
Safety & Instructional Decals 10
Safety Rules 7
Safety Symbols Explained 2