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URL:http://www.hitachi-c-m.com
PRINTED IN JAPAN (K) 2012, 07
PART NO.
WJBE-EN-00
Workshop Manual
ZX
870
-5G
870LC
-5G
870H
-5G
870LCH
-5G
870LCR
-5G
Hydraulic Excavator
Service Manual consists of the following separate Part No.
Technical Manual (Operational Principle)
Technical Manual (Troubleshooting)
Workshop Manual
: Vol. No.TOJBE-EN
: Vol. No.TTJBE-EN
: Vol. No.WJBE-EN
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Summary of Contents for Hitachi ZX 870-5G
- Page 1 PART NO. WJBE-EN-00 Workshop Manual 870LC 870H 870LCH 870LCR URL:http://www.hitachi-c-m.com Hydraulic Excavator Service Manual consists of the following separate Part No. Technical Manual (Operational Principle) : Vol. No.TOJBE-EN Technical Manual (Troubleshooting) : Vol. No.TTJBE-EN Workshop Manual : Vol. No.WJBE-EN PRINTED IN JAPAN (K) 2012, 07...
- Page 2 Group 4 Track Adjuster Group 5 Front Idler Group 6 Upper and Lower Roller Group 7 Track SECTION 5 ATTACHMENT COPYRIGHT(C)2012 Hitachi Construction Machinery Co., Ltd. Group 1 Front Attachment Tokyo, Japan All rights reserved Group 2 Cylinder SECTION 6 ENGINE...
- Page 3 TECHNICAL MANUAL (Operational Principle) TECHNICAL MANUAL (Troubleshooting) SECTION 1 GENERAL SECTION 4 OPERATIONAL PERFORMANCE TEST Group 1 Specification Group 1 Introduction Group 2 Component Layout Group 2 Standard Group 3 Component Specifications Group 3 Engine Test SECTION 2 SYSTEM Group 4 Excavator Test Group 1 Controller Group 5 Component Test Group 2 Control System...
- Page 4 SECTION 1 GENERAL CONTENTS Group 1 Precautions for Disassembling and Assembling Precautions for Disassembling and Assembling ............W1-1-1-1 Group 2 Tightening Tightening Bolts and Nuts ..........W1-2-1-1 Piping Joint ..............W1-2-1-4 Group 3 Painting Painting specification ...........W1-3-1-1 Final painted color ............W1-3-1-1 Group 4 Bleeding Air Bleeding Air from Hydraulic Oil Tank ......W1-4-1-1 Bleeding Air from Hydraulic System .......W1-4-1-2 Bleeding Air from Fuel System ........W1-4-1-3...
- Page 5 (Blank) JBEW-1-2...
- Page 6 SECTION 1 GENERAL Group 1 Precautions for Disassembling and Assembling Precautions for Disassembling and If a part or component cannot be removed after Assembling removing its securing nuts and bolts, do not attempt to remove it forcibly. Find the cause (s), then take the appropriate measures to remove it.
- Page 7 SECTION 1 GENERAL Group 1 Precautions for Disassembling and Assembling Precautions for Using Floating Seal 1. In general, replace the floating seal with a new one after disassembling. If the floating seal is required to be reused, follow these procedures: ...
- Page 8 SECTION 1 GENERAL Group 1 Precautions for Disassembling and Assembling Precautions for Using Nylon Sling 1. Follow the precautions below to use nylon slings safely. Attach protectors (soft material) on the corners of the load so that the nylon sling does not directly contact the corners.
- Page 9 SECTION 1 GENERAL Group 1 Precautions for Disassembling and Assembling CAUTION: If a load is lifted with a damaged nylon sling, serious personal injury may result. Be sure to visually check the nylon sling for any damage before using. 2. Before using a nylon sling, visually check the nylon sling for any damage corresponding to examples shown to the right.
- Page 10 SECTION 1 GENERAL Group 1 Precautions for Disassembling and Assembling Maintenance Standard Terminology “Standard” 1. Dimension for parts on a new machine. 2. Dimension of new components or assemblies adjusted to specification. Allowable errors will be indicated if necessary. “Allowable Limit” 1.
- Page 11 SECTION 1 GENERAL Group 1 Precautions for Disassembling and Assembling (Blank) W1-1-1-6...
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Page 12: Tightening Bolts And Nuts
SECTION 1 GENERAL Group 2 Tightening Tightening Bolts and Nuts CAUTION: Use tools appropriate for the work to be done. Makeshift tools and procedures can create safety hazards. For loosening and tightening nuts and bolts, use correct size tools. Otherwise, tightening tools may slip, potentially causing personal injure. - Page 13 SECTION 1 GENERAL Group 2 Tightening IMPORTANT: The following items are applied to both fine and coarse pitch threads. Apply lubricant to the bolts and nuts in order to reduce friction coefficient of them. (For example, spindle oil with white zinc B dissolved in it) Torque tolerance is ±10 %.