Boom Cylinder Seal Kit 707-99-59320 for Komatsu PC270LC-8 PC290LC-8K Excavator
Boom Cylinder Seal Kit 707-99-59320 for Komatsu PC270LC-8 PC290LC-8K Excavator
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Product Description
Part Name: Boom Cylinder Seal Kit
Part Number(s): 707-99-59320
Brand Compatibility: Komatsu
Machine Type: Excavator
Hydraulic Component: Boom Hydraulic Cylinder
Condition: Brand New
Shipping: Fast worldwide shipping with secure packaging, 2–7 day delivery and reliable international logistics.
The 707-99-59320 Boom Cylinder Seal Kit is designed for the boom hydraulic cylinder used on selected Komatsu excavators, including the PC270LC-8, PC290LC-8K, PC290NLC-8K and PC308USLC-3. The boom cylinder controls the lifting and lowering movement of the excavator's boom, providing the hydraulic force required for digging, lifting, loading and material handling operations.
Worn or damaged boom cylinder seals can result in hydraulic oil leakage, reduced lifting force, slow boom movement, boom drift and loss of hydraulic efficiency. Replacing worn sealing components with the correct seal kit can help restore cylinder sealing performance, maintain hydraulic pressure and support reliable boom operation in demanding construction and earthmoving environments.
This seal kit is suitable for heavy-duty applications including construction, excavation, earthmoving, quarrying, mining and infrastructure development. Proper hydraulic cylinder inspection and correct seal installation are recommended to help prevent premature wear and maintain dependable machine performance.
Typical Applications: Construction • Earthmoving • Excavation • Mining • Quarrying • Infrastructure Development • Material Handling
Common Symptoms of Worn Boom Cylinder Seals
- Hydraulic oil leakage from the boom cylinder
- Reduced boom lifting force
- Slow boom raising or lowering
- Boom drift during operation
- Loss of hydraulic pressure
- Reduced hydraulic efficiency
- Increased machine downtime
Cross-Reference Part Numbers
OEM Part Number: 707-99-59320
Compatible Models
Excavators: Komatsu PC270LC-8, PC290LC-8K, PC290NLC-8K, PC308USLC-3.
Fitment Note: Please verify the OEM part number, machine model, serial number and boom hydraulic cylinder assembly before ordering. Hydraulic cylinder configurations may vary depending on machine model, production series and serial number.
Technical Specifications
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