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Summary of Contents for Hitachi EX550-5
- Page 1 EX550-5, EX600H-5 Workshop Manual...
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Page 2: Table Of Contents
SECTION 1 GENERAL INFORMATION —CONTENTS— Group 1 Precautions for Disassembling and Assembling Precautions for Disassembling and Assembling........... W1-1-1 Maintenance Standard Terminology .......... W1-1-4 Group 2 Tightening Tightening Torque Specification....W1-2-1 Torque Chart .......... W1-2-3 Piping Joint ..........W1-2-6 167W-1-1... - Page 3 (Blank) 167W-1-2...
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Page 4: And Assembling
GENERAL INFORMATION / Precautions for Disassembling and Assembling PRECAUTIONS DISASSEMBLING AND ASSEMBLING Precautions for Disassembling and Assembling • • Clean the Machine Precautions for Disassembling • To prevent dirt contamination, cap or plug all re- Thoroughly wash the machine before bringing it into moved pipes. - Page 5 GENERAL INFORMATION / Precautions for Disassembling and Assembling Bleeding Air from Hydraulic System When hydraulic oil is drained, the suction filter or the suction lines are replaced, or the removal and instal- lation of the pump, swing motor, travel motor or cylin- der is done, bleed air from the hydraulic system in the following procedures: •...
- Page 6 GENERAL INFORMATION / Precautions for Disassembling and Assembling Precautions for Handling Floating Seal 1. In general, replace the floating seal with a new one after disassembling. If the floating is to be reused, follow these proce- dures: (1) Keep seal rings together as a matched set with seal ring faces together.
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Page 7: Maintenance Standard Terminology
GENERAL INFORMATION / Precautions for Disassembling and Assembling MAINTENANCE STANDARD TERMINOL- “Standard” 1. Dimension for parts on a new machine. 2. Dimension of components or assemblies adjusted to specification. Both dimensions are shown with tolerances as neces- sary. “Allowable Limit” 1. -
Page 8: Tightening Torque Specification
GENERAL INFORMATION / Tightening TIGHTENING TORQUE SPECIFICATIONS Bolt and Nut on Base Machine Standard Torques Torque Specifications Torque Bolt Dia Wrench Size Descriptions Q’ty N⋅m kgf⋅m lbf⋅ft 1 Engine cushion Engine cushion rubber Front rubber mounting Cushion rubber-machine bolt Engine cushion rubber Rear Cushion rubber-machine 2 Radiator mounting bolt... - Page 9 GENERAL INFORMATION / Tightening Torque Specifications (continued) Torque Bolt Dia Wrench Size Descriptions Q’ty N⋅m kgf⋅m lbf⋅ft 14 Travel device mounting bolt Travel motor mounting bolt Sprocket mounting bolt 15 Upper roller mounting 16 Lower roller mounting bolt STD, H LC, LCH 17 Track shoe bolt STD, H...
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Page 10: Torque Chart
GENERAL INFORMATION / Tightening TORQUE CHART CAUTION: Use tools appropriate for the work to be done. Makeshift tools and parts create safety hazards. If an incorrect tool is used, the tool may slip or come off or break, resulting in personal injury. Bolt Types When tightening bolts and nuts, use the specified torque. - Page 11 GENERAL INFORMATION / Tightening IMPORTANT: (1) Apply lubricant (i.e. white zinc B dissolved into spindle oil) to nuts and bolts to reduce friction. (2) Torque tolerance should ± ± ± ± 10 %. (3) Be sure to use bolts of correct length.
- Page 12 GENERAL INFORMATION / Tightening Service Recommendations for Split Flange IMPORTANT: (1) Be sure to clean and inspect sealing surfaces. Scratches / roughness cruse leaks and seal wear. Unevenness causes seal extrusion. If defects cannot be polished out, replace component. W105-01-01-015 (2) Be sure to use only specified O- WRONG rings.
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Page 13: Piping Joint
GENERAL INFORMATION / Tightening PIPING JOINT Pipe Thread Connection / Union Joint Tightening Torque Specifications Union Joint Metal sealing faces (4) of adapter (1) and (5) of hose (2) fit together to seal pressure oil. Union joints are used to join small-diameter lines. Joint Body M202-07-051 IMPORTANT: (1) Do not over-tighten nut (3). - Page 14 GENERAL INFORMATION / Tightening O-ring Seal Joint O-ring (6) is located on the end face of adapter (7) to seal pressure oil at the joint. IMPORTANT: (1) Be sure to replace O-ring (6) with new one when reconnecting. (2) Check that O-ring (6) is Correctly seated in O-ring groove (8) before tightening union nut (9).
- Page 15 GENERAL INFORMATION / Tightening Screwed-In Connector IMPORTANT: Many types of screwed-in connec- 30° tors are used for hose or pipe con- nections. Be sure to confirm that the thread pitch and thread type (tapered or straight) correctly match before Male Tapered Thread Male Straight Thread connection.
- Page 16 Connecting Hose WRONG RIGHT CAUTION: (1) When replacing hoses, be sure to use only genuine Hitachi service parts. Using hoses other than genuine Hitachi hoses may cause oil leaks, hose rupture separation fitting, possibly resulting in a fire on the machine.
- Page 17 GENERAL INFORMATION / Tightening (Blank) W1-2-10...
- Page 18 SECTION 2 UPPERSTRUCTURE —CONTENTS— Group 1 Cab Disassemble Remove and Install Cab ...... W2-1-1 Control Valve 2 ........ W2-4-14 Dimensions of the Cab Glass ....W2-1-7 Assemble Control Valve 2 ........ W2-4-16 Group 2 Counterweight Disassemble Remove and Install Control Valve 3 ........ W2-4-18 Counterweight ........
- Page 19 Group 6 Pilot Valve Remove and Install Right Pilot Valve ......... W2-6-1 Remove and Install Left Pilot Valve ......... W2-6-4 Remove and Install Travel Pilot Valve ....... W2-6-7 Disassemble Front Attachment Pilot Valve ......... W2-6-8 Assemble Front Attachment Pilot Valve ........W2-6-10 Disassemble Travel Pilot Valve ........
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