Hitachi Zaxis 850LC-3 Operator's Manual page 9

Retracting the Side Frame .........................................................6-21
Extending the Side Frame .........................................................6-22
Type of Packings for Transportaion .......................................6-25
Packing Dimensions and Weights for
Transportation-1 (Backhoe) ...............................................6-26
Packing Dimensions and Weights for
Transportation-2 (Backhoe) ...............................................6-29
MAINTENANCE
Correct Maintenance and Inspection Procedures .............. 7-1
Check the Hour Meter Regularly ............................................... 7-2
Use Correct Fuels and Lubricants ............................................. 7-2
Prepare Machine for Maintenance ........................................... 7-3
Hood and Access Covers .............................................................. 7-4
Periodic Replacement of Parts ................................................... 7-5
Maintenance Guide ....................................................................... 7-6
A. Greasing ....................................................................................... 7-9
Automatic Lubrication --- If Equipped ...........................7-10
Front Joint Pins (Backhoe) ..................................................7-12
Swing Bearing .........................................................................7-14
Electric Grease Gun --- If Equipped .................................7-15
Swing Internal Gear ..............................................................7-19
B. Engine Oil ...................................................................................7-20
Engine Oil Level ......................................................................7-21
Change Engine Oil ...............................................................7-22
Replace Engine Oil Filter .....................................................7-22
C. Transmission Oil .......................................................................7-24
Pump Transmission ...............................................................7-25
Swing Reduction Gear .........................................................7-26
Travel Reduction Gear ..........................................................7-27
D. Hydraulic System ....................................................................7-29
Inspection and Maintenance of Hydraulic
Equipment ................................................................................7-30
Check Hydraulic Oil Level ...................................................7-32
Drain Hydraulic Oil Tank Sump .........................................7-33
Change Hydraulic Oil ..................................................................7-34
Suction Filter Cleaning .......................................................7-34
Replace Hydraulic Oil Tank Filter ......................................7-37
Replace Pump Drain Filter ..................................................7-38
Replace Pilot Oil Filter ..........................................................7-39
Replace Air Breather Element ...........................................7-40
Check Hoses and Lines ........................................................7-41
Service Recommendations for Hydraulic Fittings ............7-44
E. Fuel System ...............................................................................7-46
Drain Fuel Tank Sump ..........................................................7-48
Check Water Separator ........................................................7-48
Replace Fuel Main Filter Element .....................................7-52
Replace Fuel Pre-Filter Element ........................................7-53
Clean Feed Pump Strainer .................................................7-54
Check Fuel Hoses ...................................................................7-55
F. Air Cleaner ...................................................................................7-56
Clean the Air Cleaner Outer Element .............................7-56
Replace the Air Cleaner Outer and Inner Elements ...7-56
G. Cooling System ........................................................................7-57
Check Coolant Level .............................................................7-59
CONTENTS
Change Coolant .....................................................................7-60
Clean Radiator/ Oil Cooler/ Inter Cooler/
Fuel Cooler Core .....................................................................7-61
Clean Oil Cooler Front Screen ...........................................7-61
H. Air Conditioner ........................................................................7-62
Clean and Replace Air Conditioner Filter .....................7-63
Check Refrigerant (Gas) Quantity ....................................7-65
Check Compressor Belt Tension .......................................7-65
Clean Condenser Core .........................................................7-66
Check Looseness at Each of Fastened Areas ................7-66
Check in-season and Off-season ......................................7-67
I. Electrical System ........................................................................7-68
Batteries ....................................................................................7-69
Replace Batteries ...................................................................7-73
Replacing Fuses ......................................................................7-73
Fuse Box ....................................................................................7-73
Additional Fuse Box ..............................................................7-73
J. Miscellaneous ............................................................................7-75
Check Bucket Teeth ...............................................................7-76
Change Bucket .......................................................................7-82
Adjust the Bucket Linkage (Backhoe) ............................7-83
Remove the Travel Levers ...................................................7-84
Check and Replace Seat Belt .............................................7-84
Check Windshield Washer Fluid Level ............................7-84
Check Track Sag .....................................................................7-85
Clean Cab Floor .....................................................................7-87
Check Tightening Torque of Bolts and Nuts ................7-88
Check O-rings in Bucket Joints ...................................... 7-102
Retighten Cylinder Head Bolt ........................................ 7-103
Inspect and Adjust Valve Clearance ............................. 7-103
Check Fuel Injection Timing ........................................... 7-103
Measure Engine Compression Pressure ..................... 7-103
Check Starter and Alternator ......................................... 7-103
Check Water Pump ............................................................. 7-103
HYDRAULIC CIRCUIT AND ELECTRICAL CIRCUIT
Hydraulic System ............................................................................ 8-1
Main Circuit ...................................................................................... 8-2
Electrical Circuit .............................................................................. 8-4
Electrical Diagram .......................................................................... 8-5
MAINTENANCE UNDER SPECIAL
ENVIRONMENTAL CONDITIONS
Maintenance Under Special Environmental Conditions .. 9-1
STORAGE
Storing the Machine ....................................................................10-1
Removing the Machine from Storage ...................................10-2
TROUBLESHOOTING
Engine ...............................................................................................11-1
Electrical System ...........................................................................11-5
Control Levers ................................................................................11-9
Hydraulic System ..........................................................................11-9