Safety rules for maintenance ............................................................................................................................91

Personnel requirements ....................................................................................................................................91

General maintenance chart: 50 to 500 hours of operation ...............................................................................92

General maintenance chart: 550 to 1000 hours of operation ...........................................................................93

Servicing maintenance chart: 50 to 500 hours of operation .............................................................................94

Servicing maintenance chart: 550 to 1000 hours of operation .........................................................................95

Cleaning the excavator .....................................................................................................................................96

Maintenance .....................................................................................................................................................96

Refilling the coolant .....................................................................................................................................96

Cleaning the radiator ...................................................................................................................................97

Checking and adjusting the V-belt tension ..................................................................................................97

Checking the coolant hoses ........................................................................................................................98

Replacing the engine oil and oil filter ...........................................................................................................98

Draining the engine oil ............................................................................................................................98

Replacing the oil filter .............................................................................................................................99

Filling the engine oil ................................................................................................................................99

Replacing the coolant ................................................................................................................................100

Checking and cleaning the air filter ...........................................................................................................101

Replacing the fuel filter ..............................................................................................................................102

Draining water from the fuel tank ...............................................................................................................103

Replacing the return filter in the hydraulic oil tank .....................................................................................103

Replacing the suction filter in the hydraulic oil tank ...................................................................................104

Draining and topping up hydraulic oil ........................................................................................................105

Draining the hydraulic oil ......................................................................................................................105

Filling the hydraulic oil ..........................................................................................................................106

Replacing the breather filter in the hydraulic oil tank .................................................................................106

Battery service ...........................................................................................................................................107

Checking the fluid level of the battery ..................................................................................................107

Charging the battery .............................................................................................................................108

Installing/uninstalling and replacing the battery....................................................................................109

Lubrication .................................................................................................................................................109

Greasing the swivel gear ......................................................................................................................109

Greasing the pitch bearing ...................................................................................................................110

Checking and tensioning the crawler tension ............................................................................................110

Checking the crawler tension ...............................................................................................................111

Adjusting the crawler tension................................................................................................................111

Replace the drive unit oil ...........................................................................................................................112

Greasing the pilot valve linkage .................................................................................................................112

Checking the electric cables and connections ..........................................................................................112

Replacing the in-line filter ..........................................................................................................................113

Resetting the service period indicator .......................................................................................................113

Checking the bolted joints ...............................................................................................................................114

Tightening torque for screws .....................................................................................................................114

Tightening torque for hose clamps ............................................................................................................114

Tightening torque for hydraulic hoses .......................................................................................................114

Tightening torque for hydraulic pipes ........................................................................................................115

Tightening torque for hydraulic adapters ...................................................................................................115

Recommended lubricants ...............................................................................................................................116

Repair work on the machine ...........................................................................................................................117

SAFETY INSPECTION .................................................................................................................... 118

Tables

Table of Contents