To make it easier for you to choose the right manual, we have compiled various information for you below, such as model designations, types, and production years.
The following models are covered by this manual: PC300-7, PC300LC-7, PC350-7, PC350LC-7 / Komatsu Limited
Komatsu PC300-7:
2005: Standard, Heavy-Duty
2006: Eco variant
2007: High Reach Demolition
Komatsu PC300LC-7:
2006: Standard, Swamp variant
2007: Long Reach
Komatsu PC350-7:
2007: Standard, High Ground Pressure
2008: Tunnel variant
Komatsu PC350LC-7:
2008: Standard, Forestry variant
2009: Mass Excavation
Engine specs (PC300-7): SAA6D114E, 504.7cu in, 241.4hp, turbocharged, 6 cylinders, 1900rpm.
Engine specs (PC350-7): SAA6D114E, see above.
Serial numbers:
6D114E-2 Series Engine S/N 40001-UP
6D114E-2 Series Engine S/N 40001-UP
6D114E-2 Series Engine S/N 20001-UP
6D114E-2 Series Engine S/N 20001-UP
Pages: 643
Manual Language: English
Delivery: Download link will appear on the checkout page after your payment is complete.
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"Download the Original Komatsu Limited Manual for a Comprehensive Parts List!"
Dive deep into the intricacies of the esteemed Komatsu PC300-7, PC300LC-7, PC350-7, and PC350LC-7 excavators. This original manual, brought to you directly from Komatsu Limited, offers an unmatched depth of information, ensuring top-tier understanding and maintenance of your equipment.
Engine Specifications/Technical Data:
• These models are powered by a Komatsu SAA6D114E-2 engine.
• The engine is compliant with EPA Tier 3 and EU Stage 3A emission regulations.
• They boast a formidable net horsepower of 242 HP (181 kW).
• The total displacement of the engine is approximately 8.27 L.
• These machines utilize a direct fuel injection system.
• The operating weight for the PC300-7 stands around 30,500 kg.
• While the PC300LC-7 has an operating weight of roughly 31,600 kg.
• The PC350-7 and PC350LC-7 tip the scales at 32,200 kg and 33,500 kg, respectively.
• The maximum digging depth for these models hovers around 8 meters.
• The bucket capacity ranges from 1.4 to 2.3 cubic meters.
• These excavators offer a maximum digging reach of approximately 11 meters.
• The equipment's drawbar pull is an impressive 25,600 kgf.
• They employ a closed-center load sensing system (CLSS) for hydraulics.
• The main pumps have a total flow rate of about 2 x 246 L/min.
• The hydraulic tank's oil capacity is around 140 L.
• These models have an undercarriage of 8 lower rollers and 2 upper rollers.
• The swing speed stands at 9.5 rpm.
• The travel speed can range from 3.1 to 5.5 km/h.
• The bucket breakout force for these machines is a robust 17,000 kgf.
• The arm crowd force is approximately 12,000 kgf.
• The engine's oil capacity is about 28 L.
• The fuel tank capacity for these models is 605 L.
• They utilize a wet-type air cleaner with a double element.
• Their cooling system uses a hydraulically driven, high-capacity cooling fan.
• They come with an advanced noise suppression system for quieter operation.
Facts and Details:
- These models represent Komatsu's innovative design approach that emphasizes safety and reliability.
- They come with an advanced hydraulic system that ensures smooth and efficient operation.
- The cab's design prioritizes operator comfort with wide spaces and ergonomic controls.
- Their fuel-efficient engine promises more work output for every liter of fuel.
- The machines feature a large multilingual LCD monitor for easy operation tracking.
- They incorporate the unique Komtrax technology, which provides machine metrics and health reports.
- These models also have a high-rigidity boom and arm.
- The reinforced undercarriage ensures longer durability and reduced downtime.
- They feature an auto-deceleration system, conserving fuel during idle times.
- Advanced safety features, such as handrails and large steps, facilitate safe machine entry and exit.
Maintenance Intervals:
► Engine oil and filter change: Every 500 hours.
► Hydraulic oil change: Every 5000 hours.
► Air filter check and clean: Every 250 hours, replace if necessary.
Maintenance Tips:
* Regularly inspect hydraulic hoses and connections for leaks.
* Lubricate all moving joints and points periodically.
* Use only recommended Komatsu fluids and parts.
* Ensure the cooling system is clean and free from obstructions.
* Periodically check the tension of the tracks.
Common Issues and Solutions:
Issue: Slow hydraulic response.
Solution: Check hydraulic fluid levels and replace filters if clogged.
Issue: Excessive vibration.
Solution: Inspect and adjust track tension.
Issue: Black smoke from exhaust.
Solution: Check air filters and replace if dirty.
Effective Maintenance Tips:
■ Follow the recommended maintenance schedule diligently.
■ Ensure the cab and all its components are kept clean for optimal operator efficiency.
■ Always warm up the engine before heavy operation.
■ After operations, clean out the bucket and attachment points to prevent build-up.
■ Regularly check all electronic components for any signs of wear or malfunction.
Popular Tuning Tips or Modifications:
* Opt for aftermarket filters for better engine performance.
* Install additional LED work lights for improved night operations.
* Upgrade to reinforced tracks for challenging terrains.
* Add advanced telematics systems for detailed machine analytics.
* Use high-performance hydraulic fluids for enhanced machine responsiveness.
Accessories and Attachments:
♦ General-purpose bucket.
♦ Heavy-duty bucket.
♦ Quick coupler.
♦ Hydraulic breaker.
♦ Grapple.
♦ Auger.
♦ Ripper.
♦ Vibration compactor.
♦ Multi-shank ripper.
♦ Grading blade.
Owner Reviews and Opinions:
Strengths:
☺ Reliable and durable design.
☺ Superior hydraulic performance.
☺ Fuel-efficient engine.
☺ Comfortable operating space.
Weaknesses:
☻ Some users found maintenance costs to be slightly high.
☻ The weight of the machines can be challenging for transport.
The Komatsu PC300-7, PC300LC-7, PC350-7, and PC350LC-7 are embodiments of Komatsu's commitment to excellence in heavy machinery. These excavators, known for their durability, reliability, and performance, are versatile assets in any construction or mining fleet. With a host of features and advanced technology, they promise efficient operations while prioritizing operator safety and comfort. However, like all machinery, they do come with their set of challenges, but the brand's global reputation ensures support at every step.
Frequent Repairs and Parts That Often Break:
→ Hydraulic hoses and connections.
→ Undercarriage rollers and idlers.
→ Air filters.
→ Bucket teeth and adapters.
→ Engine oil filters.
→ Drive belts.
→ Track adjusters.
→ Final drive components.
→ Fuel filters.
→ Radiator and cooling components.
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