Kobelco 50SR Acera Tier 4 Compact Crawler Excavator Service Manual
1,020 pages · Publication S5PJ0023E01
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- Models
- 50SR Acera Tier 4
- Manual type
- Service Manual
- Pages
- 1,020
- Publication
- S5PJ0023E01
- Condition
- Brand new
What's inside
From the manual's own table of contents: 7 sections, 252 entries. See sample pages (PDF, 707 KB)
50SR ACERA SERVICE MANUAL1 topic
- Section Table of Contents
SECTION 1 - SAFETY AND GENERAL INFORMATION46 topics
- GENERAL PRECAUTIONS FOR MAKING REPAIRS
- Preparation Before Disassembling
- Safety When Disassembling And Assembling
- Disassembling and Assembling Hydraulic Equipment
- Removing Hydraulic Equipment Assembly
- Disassembling Hydraulic Equipment
- Inspecting Parts
- Assembling Hydraulic Equipment
- Installing Hydraulic Equipment
- Electrical Equipment
- Hydraulic Parts
- Weld Repair
- Environmental Issues
- INTERNATIONAL UNIT SYSTEM
- Introduction
- COMPONENTS NAME
- MACHINE DIMENSIONS
- SPECIFICATIONS AND PERFORMANCE
- Speed and Gradeability
- Engine
- Hydraulic Components
- Side Digging & Dozer
- Weight
- MACHINE & COMPONENTS WEIGHT (DRY)
- TRANSPORTATION
- TYPE OF CRAWLER SHOES
- TYPE OF BUCKET
- ENGINE SPECIFICATIONS
- Specifications
- Engine Performance Curve
- ATTACHMENT DIMENSIONS
- Boom
- Boom Dimensional Drawings
- Boom Maintenance Standards
- Arm Dimensional Drawings
- Arm Maintenance Standards
- Bucket
- Bucket Dimensional Drawings
- Detail Dimensional Drawings of Lug Section
- Detail Dimensional Drawings of Boss Section
- Dozer
- Dozer Dimensional Drawings
- Dozer Maintenance Standards
- Swing
- Swing Bracket Dimensional Drawings
- Swing Portion Maintenance Standards
SECTION 2 - MAINTENANCE49 topics
- TIGHTENING TORQUES FOR CAPSCREWS AND NUTS
- SCREW SIZE
- Capscrew (Bolt)
- Capscrew (Socket Bolt)
- Socket Set Screw
- TIGHTENING TORQUE FOR HOSE AND FITTING
- Joint (O-ring Type)
- Hydraulic Hose (30° Flare Type)
- Joint (ORS Type)
- Split Flange
- TIGHTENING TORQUES FOR NUTS AND SLEEVES
- Sleeve Type Tube Fittings
- PLUGS
- Plug For Hydraulic Pipe Joint
- Plug For Hydraulic Equipment
- SPECIAL SPANNER FOR TUBE
- SPECIAL TOOLS
- APPLICATION OF SCREW LOCKING COMPOUND AND SEALING COMPOUND
- COUNTERWEIGHT LIFTING JIG
- UPPER FRAME LIFTING JIG
- MAINTENANCE STANDARDS AND TEST PROCEDURES
- How To Use Maintenance Standards and Precautions
- Performance Inspection Standard Table
- Standard Value Table
- Measuring Engine Speed
- Engine Speed Measurement
- Measuring Hydraulic Oil Pressure
- Standard for Hydraulic Oil Pressure Measurement
- Pressure Measurement and Adjustment
- Main Circuit Pressure
- Pilot Circuit Pressure
- Measuring Travel Performances
- Travel
- Travel Deviation
- Movement Drift Due to Gravity
- Drain Rate on Travel Motor
- Measuring Slew Performances
- Slew Time
- Overrun When Slewing Stops
- Slew Drift Due to Gravity
- Drain Rate of Slew Motor
- Measuring Attachment Operating Performances
- Cylinder Speed
- Gravity Drift of Cylinders
- Measuring Slew Bearing Performances
- Slew Bearing-Bucket Tip Play
- Slew Bearing Play
- Measuring Crawler Tension
- Crawler Tension
SECTION 3 - SYSTEMS66 topics
- HYDRAULIC SYSTEM
- Function and Features of Hydraulic Circuit
- Hydraulic Circuits and Component Models
- Hydraulic Circuit Diagram
- Hydraulic Circuit Operation
- Color Coding Standard For Hydraulic
- Neutral Circuit
- Travel Operating Circuit
- Slew Operating Circuit
- Bucket Operating Circuit
- Boom Operating Circuit
- Arm Operating Circuit
- Swing Operating Circuit
- Dozer Operating Circuit
- Nibbler & Breaker Operating Circuit
- Travel / Dozer Combined Operating Circuit
- Travel / Boom Combined Operating Circuit
- ELECTRICAL SYSTEM
- How To Read Circuit Diagram and Harness Connection
- Electric Circuit Diagram
- Harness Connection
- Schematic Piping For Hydraulic System
- Electrical Equipment and Harness
- Electrical Equipment List
- Harness & Cable List
- Drawings For Components and Harness
- Upper Frame Portion
- Engine Portion
- Relay Unit Portion
- Fuel Tank Portion
- Work Light Portion
- Cab Portion (OPT)
- Air Filter Portion (Restriction Switch)
- Hand Control and Slew/Swing Harness Assembly Portion
- Detail of Harness and Cable
- Inst • Main Harness (No. H-1)
- Engine Harness (No. H-3)
- Starter Cable (+) (No. H-4)
- Battery Ground Cable (-) (No. H-5)
- Boom Harness (No. H-7)
- Key Switch Harness (No. H-8)
- Canopy Working Light Harness (No. H-9)
- Boom Work Light Extension Harness (No. H-10)
- Connection Harness with Cab (No. H-11) (OPT)
- Air Filter Harness (No. H-12)
- Hand Control and Slew/Swing Harness (No. H-16)
- Instrument Panel Harness (Left) (No. H-18)
- Hydraulic Pump
- Construction and Function
- Inner Construction
- Pilot Valve (ATT)
- Summary
- Construction
- Operation
- Pilot Valve (Travel)
- Control Valve
- General View and Hydraulic Ports No.(s)
- Hydraulic Circuit
- Slewing Motor
- General View
- Function and Operation
- Travel Motor
- Function
- Swivel Joint
- Cylinder
- Specifications Electrical Equipment
SECTION 4 - DISASSEMBLY AND ASSEMBLY55 topics
- ATTACHMENTS
- Removing and Installing
- Attachment Assembly and Name
- Removal
- Installation
- Installation is performed in the reverse order of removal, including the following
- Preparation for Removal
- Removal of Swing Bracket and Cylinder
- Installation of Swing Bracket and Cylinder
- DISASSEMBLING AND ASSEMBLING
- Necessary Tools
- General Precautions
- Cylinder Construction
- Disassembly
- Assembly
- Maintenance Standards
- Jig List
- Troubleshooting
- UPPER STRUCTURE
- Preface
- Canopy / Cab
- Canopy Removal
- Cab Removal (Option)
- Guard (Cover)
- Floor Plate Assembly
- Floor Plate Removal Preparation
- Floor Plate Removal
- Battery
- Removal Preparation
- Counterweight
- Pump
- Solenoid Valve
- Multi-Control Valve
- Fuel Tank
- Disassembly Preparation
- Hydraulic Oil Tank
- Air Cleaner
- Generator
- UNDERCARRIAGE
- Components
- Crawler
- Removing Rubber Crawler
- Installing Rubber Crawler
- Removal and Installation Procedures (Steel : OPT)
- Upper Roller
- Disassembling
- Installing
- Tools and Jigs
- Lower Roller
- Removing
- Front Idler
- Idler Adjuster
- Disassembly and Assembly
- Sprocket
- Slewing Bearing
SECTION 5 - TROUBLESHOOTING17 topics
- TROUBLESHOOTING THE HYDRAULIC SYSTEM
- Confirm Actual Troubled Conditions at Site
- Trouble Diagnosis : Hydraulic
- Attachment
- Travel Operation
- Slewing Operation
- TROUBLESHOOTING (ELECTRICAL SYSTEM)
- Trouble Diagnosis : Electric System
- General
- Attachment Operation
- Deceleration
- TROUBLESHOOTING (ENGINE)
- Trouble Diagnosis : Engine
- Starting Trouble
- E/G Rotation Trouble
- Output Drops Down
- Other Trouble
TABLE OF11 topics
- Yanmar Warranties
- Safety
- General Service Information
- Periodic Maintenance
- Fuel System
- Cooling System
- Lubrication System
- Turbocharger
- Starter Motor
- Alternator
- Electric Wiring
Inside this manual
Real pages from this service manual (1,020 pages). Open the sample pages (PDF, 706 KB)
- Diagram, page 193: CHAPTER 2 - ELECTRICAL SYSTEM
- Troubleshooting, page 583: CHAPTER 1 - TROUBLESHOOTING (HYDRAULIC SYSTEM)
- Specifications, page 988: ALTERNATOR
- Color page, page 662: SAFETY
- Color page, page 312: Issued 01-2008
- Foldout diagram (color), page 1,013: TROUBLESHOOTING
Other manuals for this machine
Save 10% on 2 manuals, 15% on 3 or more. Other manuals for the 50SR Acera Tier 4 are listed below. Editions cover different serial number ranges: check the serial coverage and tick only the ones that match your machine.
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This is a service manual
Here's how it compares to the other manual types.
Service manual
Factory repair procedures and technical information such as specifications, troubleshooting, and wiring and hydraulic diagrams, for the models and systems the manual covers. See What's inside for its topics.
Operator's manual
Safe operation, controls, maintenance schedules, lubrication points, inspections, and basic checks. Repair procedures are in the service manual.
Parts manual
Illustrated diagrams with factory part numbers for identifying components and ordering parts. Repair procedures are in the service manual.
Engine service manuals are sometimes sold separately, since certain machine models were offered with more than one engine option.
What it's used for
Factory manual for in-house farm and construction shop use. Straightforward, complete, and easy to follow. It contains the OEM information dealership service departments and parts counters use to diagnose problems, identify components, and perform maintenance or repairs correctly.
Service shops and owner/operators who repair their own equipment
Identifying correct parts and seeing how assemblies come apart and go back together
Keeping equipment running with less downtime
Factory manual, 1,020 pages
Quantity one is the manual described above.
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Questions about model, serial number, engine coverage or contents? Contact us before purchasing and we'll help confirm it's the right manual. Please verify the manual type, machine model, serial number range and engine coverage before purchasing: manuals ordered in error carry a 20% restocking fee (return policy).