A downed SK210-8 excavator traced to its real fault from Kobelco's own data is what the 909 pages of this Kobelco SK210-8, Acera Mark 8 shop manual PDF (OEM ID YN91ZU0007P1 NA) buy you. Color-coded hydraulic circuits trace oil through the neutral, travel, boom, arm, bucket and swing paths, and the electrical chapter lays out the full circuit diagram plus every harness from cab to boom lights. Troubleshooting claims a big slice of the book, sorted by error code, by symptom and by Mechatro diagnosis mode, while the travel chapter covers idler, roller, sprocket and swing bearing removal. Gauge the main pump against its 34.3 MPa (4980 psi) rated pressure and 37.8 MPa (5480 psi) with ATT boost before you condemn it. A made-up relief figure can split a hose. Bookmarks and a searchable text layer get you from error code to answer quickly, so the machine is digging again next shift.
What's Inside This Kobelco SK210-8, ACERA MARK 8 Manual
| System | Pages | Key Topics |
|---|---|---|
| Safety | 13-18 | General Safety Information, Safety Precautions |
| Outline | 19-26 | General Precautions for Making Repairs |
| Specifications | 27-40 | Name of Components (SK210-8: Standard Arm Bucket Shoe, Long Arm Bucket Shoe), Weight of Components |
| Attachment Dimensions | 41-52 | Boom (Dimensional Drawing, Maintenance Standard), Arm (Dimensional Drawing, Bucket and Pin (Dimensional: Drawing, Table) |
| Tools | 53-72 | Standard Torque Specifications for Capscrews and Nuts, Screw Size (Capscrew, Socket Set Screw), Torque Specifications for Hose and Fittings (Joint, Hydraulic Hose, Split Flange) |
| Standard Maintenance Timetable | 73-88 | Standard Working Time Table |
| Maintenance Standard and Test Procedure | 89-118 | How to Use the Maintenance Standard, Performance Inspection Standard Table, Measurement of Engine Speed |
| Mechatro Control System | 119-176 | Summary of Mechatro Control System (Mechatro Control System in General, Unload Valve Control, Positive Control & P-Q Control) |
| Hydraulic System | 177-214 | Summary, Hydraulic Circuits and Components, Color Coding Standard for Hydraulic Circuits, Neutral Circuit, Travel Circuit, Bucket Circuit, Boom Circuit, Swing Circuit |
| Electrical System | 215-252 | Electric Circuit Diagram, Electrical Equipment List |
| Components System | 253-372 | Hydraulic Components (Hydraulic Pump, Regulator, Control Valve) |
| Air Conditioner System | 373-420 | Basic Air Conditioner System (Air Cycle, Auto Air Conditioner System Outline), Component and Construction, Piping (Air Conditioner, Receiver Dryer Assy) |
| Disassembling Section | 421-466 | Disassembly and Assembling (Disassembly & Assembly Overview, Torque Specifications) |
| Upper Structure | 467-630 | Operator Seat (Cab, Battery, Guard), Fuel Tank, Hydraulic Tank, Hydraulic Pump, Counterweight, Radiator & Oil Cooler, Control Valve, Swing Motor Unit, Swivel Joint, Upper Frame |
| Travel System | 631-696 | Removing and Installing (Travel System, Crawler, Upper Roller), Removal and Installation of Travel Motor Unit |
| Troubleshooting Section | 697-798 | Troubleshooting (Evaluation of Actual Problem at the Site, Classification of Failure and Troubleshooting, Mechatro Controller Blown Fuse, By Error Code), Hydraulic System, Electric Systems, Engine Related Troubleshooting, Trouble Diagnosis Mode |
| Engine Section | 799-909 | Engine (Diagnostics, L T/a Engine Overhaul, Recharging and Start-Up), Connecting Rods, Cylinder Head, Valves and Valve Seats |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| CN101 Pin 3 Power output | 5V | p. 21 |
| CN106 Pin 3 Accel motor A phase output current | 1.5A | p. 258 |
| Main pump rated pressure | 34.3 MPa (4980 psi) | p. 256 |
| Main pump ATT boost pressure | 37.8 MPa (5480 psi) | p. 256 |
| Rated output torque | 20100 / 34200 N·m (14800 / 25200 lbf·ft) | p. 327 |
| Working revolution | 48.2 / 29.6 min-1 | p. 327 |
| Pressure sensor (High pressure) tightening torque | 73.5 N·m (54.2 lbf·ft) | p. 366 |
| Pressure sensor (Low pressure) tightening torque | 29.4~34.3 N·m (21.7~25.3 lbf·ft) | p. 364 |
| Swing bearing capscrew tightening torque | 563 N·m (415 lbf·ft) | p. 667 |
| Swing bearing grease fill amount | 8.6kg (19 lbs) | p. 667 |
| P1/P2 pump pressure in boom up full lever, high idling and H mode operation | 32 MPa | p. 759 |
| P1/P2 pump proportional valve secondary pressure in control lever neutral and high idling operation | 0.5 to 1.0 MPa | p. 759 |
Kobelco SK210-8, ACERA MARK 8 Common Problems This Manual Covers
Kobelco SK210-8 Acera Mark 8 boom up at full lever, high idle and H mode feels slow
Measure P1/P2 pump pressure with boom up at full lever, high idling and H mode against 32 MPa on page 759. If it reads low, check boom up remote control pressure for 3.0 MPa or more, P1/P2 unload secondary pressures at 0.5 to 1.2 MPa, and pump proportional valve pressures at 1.8 to 3.0 MPa on page 761.
Manual Section: Hydraulic System Troubleshooting p. 761With engine at high idle, all controls respond slowly or do not function at all
Check P1/P2 unload secondary pressure with the levers in neutral at high idling; page 758 calls for 2.7 MPa or more. Then measure P1/P2 pump proportional valve secondary pressure in the same condition against 0.5 to 1.0 MPa from page 759. Get both readings before you pull any components.
Manual Section: Hydraulic System Troubleshooting p. 758Arm in operation at full lever and high idle runs noticeably slower than it should
Check arm in remote control pressure at full lever and high idling for 3.0 MPa or more on page 763. Next, measure P1/P2 unload secondary pressures (0.5 to 1.2 MPa) and pump proportional valve pressures (2.0 MPa or more) on page 764. Verify that arm in spool 2 proportional valve secondary pressure reads 1.7 to 2.2 MPa with the arm moving in the air.
Manual Section: Hydraulic System Troubleshooting p. 764At full lever and high idle, bucket digging or bucket dump operation is slow
Check bucket digging remote control pressure for 3.0 MPa or more on page 767, then verify the P1 pump proportional valve at 2.7 MPa or more and P2 at 1.6 to 2.2 MPa. For slow dump, measure on page 769: P1 proportional valve 2.7 MPa or more, P2 0.9 to 1.4 MPa, P1/P2 unload secondary 0.5 to 1.2 MPa.
Manual Section: Hydraulic System Troubleshooting p. 767Swing at full lever and high idle is slow or the upper structure will not swing
Check swing parking brake solenoid valve A2 port pressure during swing operation; page 770 calls for 4 MPa or more. Measure P2 unload secondary pressure at full swing lever and high idling against 0.5 to 1.2 MPa, and confirm that P2 pump proportional valve pressure reads 2.7 MPa or more on page 769.
Manual Section: Hydraulic System Troubleshooting p. 770At full travel lever and high idle, machine travels slowly or deviates to one side
Check right and left travel remote control pressures at full lever, forward and reverse, at high idling; page 773 calls for 2.1 MPa or more. Measure P1/P2 unload secondary pressures against 0.5 to 1.0 MPa, then compare P1 pump pressure (travel right) and P2 pump pressure (travel left). Each should read 2.7 MPa or more.
Manual Section: Hydraulic System Troubleshooting p. 773Frequently Asked Questions
What is the procedure to clear or reset the trouble history on the Kobelco SK210-8?
To delete the contents of the trouble history, first display the trouble history screen on the gauge cluster. Then, press the work mode change switch and the buzzer stop switch simultaneously for 10 seconds or more. When "NO ERROR" is displayed on the screen, the deletion is completed. p. 753
What is the standard torque specification for the M16 capscrews used on the Kobelco excavator travel motor?
The standard tightening torque for an M16 capscrew (bolt) is 279 N-m (206 lb-ft) when using Loctite #262, as specified for the travel motor installation. p. 666
What is the correct procedure for bleeding air from the hydraulic pump on the Kobelco excavator?
For air removal in the hydraulic pump and swing motor, loosen but do not remove the drain plug on the upper housing. Start the engine and run it at low idle until hydraulic fluid flows from the port, then tighten the plug securely. p. 22
What is the standard intake and exhaust valve clearance for the 6.7L engine in the Kobelco SK210-8, Acera Mark 8?
The standard valve clearance for the intake valve is 0.25 mm at cool, and for the exhaust valve, it is 0.50 mm at cool. p. 832
What is the capacity of the hydraulic tank for the SK210-8?
The hydraulic tank capacity for the SK210-8 is 146 liters (39 gallons). p. 482
Do I get instant access to this Kobelco SK210-8 Shop Manual?
Delivery is instant: a 909-page searchable PDF is yours the second checkout clears. Laptop, tablet, or phone, all fine.
Am I able to print pages from this Kobelco SK210-8 manual?
Yes. Print a chapter or just the pages for the job at hand, for use in your own shop. Any home or office printer works.
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