Komatsu PC27MR-2, PC30MR-2, PC35MR-2, PC40MR-2, PC50MR-2 Hydraulic Excavator Service Manual
631 pages · Publication SEBM032411
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What's inside
From the manual's own table of contents: 31 topics. See sample pages (PDF, 718 KB)
- No. of page
- GENERAL
- MAINTENANCE STANDARD
- TESTING AND ADJUSTING
- DISASSEMBLY AND ASSEMBLY
- OTHERS
- Possible faults related to engine
- Engine does not start easily (It always takes time to start)
- Engine does not crank
- Engine cranks but exhaust smoke does not come out
- Exhaust smoke comes out but engine does not start
- Engine speed does not rise sharply (Follow-up performance is low)
- Engine stops during operation
- Engine rotation is abnormal (Engine hunts)
- Output is insufficient or power is low
- Exhaust gas color is bad (Incomplete combustion)
- Oil is consumed much or exhaust gas color is bad
- Oil becomes dirty quickly
- Fuel is consumed much
- Coolant contains oil , blows back, or reduces
- Engine oil pressure caution lamp lights up (Oil pressure lowers)
- Oil level rises (Water or fuel is mixed in oil)
- Coolant temperature rises too high (Overheating)
- Abnormal sound comes out
Show all 31 topics
- Vibration is excessive
- Engine does not stop
- Engine is not preheated normally
- Possible faults related to work equipment, travel, swing, and blade
- Speed or power of whole work equipment, travel, swing, and blade is low
- Engine speed lowers extremely or engine stalls
- Work equipment, travel, swing, and blade systems do not work
Inside this manual
Real pages from this service manual (631 pages). Open the sample pages (PDF, 717 KB)
- Specifications, page 55: GENERAL
- Diagram, page 424: Relative circuit diagram (PC27, 30, 35MR-2)
- Troubleshooting, page 487: INFORMATION CONTAINED IN TROUBLESHOOTING TABLE
- Foldout diagram: ELECTRICAL CIRCUIT DIAGRAM
Other manuals for this machine
Save 10% on 2 manuals, 15% on 3 or more. Other manuals 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, 631 pages
Quantity one is the manual described above.
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60-day returns
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Binder not included
Manuals over about 300 pages may need a standard 3-ring binder, which you can buy locally to keep the pages organized for shop use.
Other editions and similar models
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).