Hitachi Ex2500-5 Excavator Technical Maintenance Manual (TTLA-449-EX)
File Details:
Hitachi Ex2500-5 Excavator Technical Maintenance Manual (TTLA-449-EX)
- Manual Language:English
- Pages: 140
- Size: 3.56 MB
- Downloadable:Yes
- Format:PDF
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Hitachi Ex2500-5 Excavator Technical Maintenance Manual (TTLA-449-EX)
1. Be sure that the machine is parked on a level, firm surface before servicing hydraulic equipment.
2. Lower the bucket to the ground and stop the engine.
3. Begin servicing hydraulic equipment only after components, hydraulic oil and lubricant are completely cooled, as they will remain hot and pressurized soon after operation. While servicing heated and pressurized hydraulic equipment, hot parts or oil may fly off or escape suddenly with a potential of serious injury. Keep body parts and face away from plugs or screws when removing them as they may be pressurized even when cooled.
4. Before servicing hydraulic equipment, bleed air from the hydraulic oil tank to release internal pressure.
5. Even after bleeding the air from the hydraulic oil tank, pressure remains in the various circuits of the hydraulic system. Be sure to operate each control lever a few times to release residual pressure from the system.
6. Avoid inspecting and servicing the travel and swing motor circuits on slopes, as they are pressurized by gravity even after bleeding the hydraulic oil tank.
Table of Contents:
Hitachi Ex2500-5 Excavator Technical Maintenance Manual (TTLA-449-EX)
MATERIALS TOP............................................................ 0 MAINTENANCE.............................................................. 1 CONTENTS................................................................. 2 MAINTENANCE.............................................................. 3 Correct Maintenance and Inspection Procedures........................ 3 Service Your Machine at Specified Intervals.......................... 4 Check the Hour Meter Regularly....................................... 4 Use Correct Fuels and Lubricants..................................... 4 Prepare Machine for Maintenance...................................... 5 Open Access Doors for Service........................................ 7 Inspection/Maintenance Lights........................................ 8 Use a Chain to Prevent Falling Accidents............................. 9 Construction Outline................................................. 11 Hydraulic System..................................................... 12 Periodic Replacement of Rubber Hoses................................. 16 Maintenance Interval Guide........................................... 20 A. Greasing.......................................................... 24 Loading Shovel Front Joint Pins.................................. 25 Backhoe Front Joint Pins......................................... 28 Swing Bearing.................................................... 30 Swing Internal Gear.............................................. 31 Center Joint..................................................... 32 Operating the Lubricator......................................... 33 B. Engine............................................................ 35 Engine Oil Level................................................. 36 Change Engine Oil................................................ 37 Replace Engine Oil Filters....................................... 37 C. Transmission...................................................... 39 Pump Transmission................................................ 40 Swing Reduction Gear............................................. 43 Travel Reduction Gear............................................ 45 D. Hydraulic System.................................................. 47 Inspection and Maintenance of Hydraulic Equipment................ 48 Check Hydraulic Oil Level........................................ 50 Drain Hydraulic Oil Tank Sump.................................... 51 Replace Full-Flow Filter and Drain Filter........................ 52 Replace Bypass Filter............................................ 54 Replace Pilot Oil Filter......................................... 56 Change Hydraulic Oil............................................. 58 Suction Filter Cleaning.......................................... 58 Replace Suction Filter........................................... 62 Replace High-Pressure Strainer................................... 64 Clean Oil Cooler Front Screen.................................... 65 Check Hoses and Lines............................................ 66 Service Recommendations for Hydraulic Fittings................... 69 E. Fuel System....................................................... 71 Refueling........................................................ 71 Drain Fuel Tank Sump............................................. 73 Drain Fuel Filter Sediment....................................... 73 Replace Fuel Filter.............................................. 74 Check Fuel Hoses................................................. 75 Clean Fuel Cooler Core........................................... 77 F. Air Cleaner....................................................... 78 Clean Air Cleaner Outer Element.................................. 78 Replace Air Cleaner Outer and Inner Elements..................... 78 G. Cooling System.................................................... 81 Check Coolant Level.............................................. 82 Check DCA4 Concentration in Coolant.............................. 83 Replace Coolant Filter........................................... 91 Change Coolant................................................... 92 Clean Radiator Interior.......................................... 92 Clean Radiator Core.............................................. 94 Check Fan Belt for Wear.......................................... 94 H. Air Conditioner................................................... 95 Recirculation Air Filter......................................... 95 Ventilation Air Filter........................................... 96 Check Refrigerant Quantity....................................... 97 Check Compressor Belt Tension.................................... 98 Clean Condenser Core............................................. 99 Check Tightening Torque..........................................100 Seasonal Maintenance.............................................101 I. Electrical System.................................................102 Batteries........................................................102 Replace Batteries................................................106 Replacing Fuses..................................................107 Power Source Terminal............................................109 Fusible Link.....................................................110 Check Electrical Cables and Wire Harnesses for Short Circuits....111 Check Emergency Engine Stop Switch...............................113 J. Miscellaneous.....................................................114 Check Bucket Teeth...............................................115 Inspect Emergency Evacuation Equipment and Hanger................117 Auto-Lubrication System..........................................118 Check and Replace Seat Belt......................................122 Check Windshield Washer Fluid Lever..............................122 Check and Adjust Track Sag.......................................123 Check Accumulator and Track Adjuster Cylinder Circuit............125 Check Side Frame Area............................................125 Check Tightening Torque of Bolts and Nuts........................126 MAINTENANCE UNDER SPECIAL ENVIRONMENTAL CONDITIONS.......................137 Maintenance Under Special Environmental Condition....................137 STORAGE..................................................................139 STORING THE MACHINE..................................................139 REMOVING THE MACHINE FROM STORAGE....................................140
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