Bucket Cylinder Seal Kit 707-99-67310 for Komatsu PC400 PC450 Excavator
Bucket Cylinder Seal Kit 707-99-67310 for Komatsu PC400 PC450 Excavator
Available in stock
Product Description
Part Name: Bucket Cylinder Seal Kit
Part Number(s): 707-99-67310
Brand Compatibility: Komatsu
Machine Type: Hydraulic Excavator
Component: Bucket Hydraulic Cylinder
Condition: Brand New
Shipping: Fast worldwide shipping with secure packaging and reliable international delivery within 2–7 business days.
The 707-99-67310 Bucket Cylinder Seal Kit is manufactured to OEM specifications for the bucket hydraulic cylinder used on selected Komatsu PC400-6, PC400LC-6, PC450-6 and PC450LC-6 excavators. This complete hydraulic cylinder overhaul kit contains precision sealing components, including rod seals, piston seals, wear rings, backup rings and O-rings, designed to restore hydraulic sealing performance, maintain operating pressure and eliminate internal and external hydraulic oil leakage. Built for demanding construction, quarrying and mining environments, it helps maximise cylinder reliability and service life.
The bucket cylinder provides the hydraulic force required to curl and dump the excavator bucket during digging, trenching, rock handling and loading operations. Continuous exposure to high hydraulic pressures, heavy breakout forces and abrasive contaminants gradually wears the sealing components. Damaged seals may cause hydraulic oil leakage, bucket drift, reduced breakout force, slower bucket response and internal pressure bypass. Replacing the complete seal kit restores efficient hydraulic performance, improves digging productivity and helps reduce unplanned maintenance downtime.
Typical Applications
Construction • Earthmoving • Mining • Quarrying • Civil Infrastructure • Road Construction • Heavy Excavation • Demolition • Material Handling
Common Symptoms
- Hydraulic oil leakage from the bucket cylinder
- Bucket drifting or uncurling under load
- Reduced bucket breakout force
- Slow bucket curl or dump operation
- Internal hydraulic pressure bypass
- Difficulty maintaining bucket position
- Reduced digging efficiency
Cross-Reference Part Numbers
OEM Part Number: 707-99-67310
Compatible Models
Hydraulic Excavators: Komatsu PC400-6, PC400LC-6, PC450-6 and PC450LC-6.
Fitment Note
Please verify the OEM part number, machine model, serial number and bucket hydraulic cylinder application before ordering. Komatsu may use different hydraulic cylinder configurations depending on machine serial number and production specification. Contact Imara Engineering Supplies if you require assistance confirming compatibility.
Technical Specifications
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