SBS120 Hydraulic Pump Overhaul Repair Kit For E320C Large Excavator Hydraulic System Maintenance

Core Keywords: SBS120 hydraulic pump repair kit, E320C main pump spare parts, large excavator hydraulic overhaul parts, hydraulic drive spare parts, excavator hydraulic repair accessories

1. Global Heavy Construction Working Application Scenarios

• Large excavator earthmoving & foundation excavation construction
• Highway, bridge and municipal road renovation projects
• Open quarry and stone crushing site operation
• Sand yard bulk aggregate loading work
• Port heavy material handling machinery
• Channel dredging and pipeline excavation engineering

This SBS120 hydraulic pump overhaul repair kit is widely matched for E320C large excavator main hydraulic pump. Complete internal repair components effectively resolve hydraulic pump common faults and reduce equipment downtime for global machinery repair shops, rental merchants and engineering contractors.

2. Common Hydraulic Piston Pump Faults & Repair Solutions

2.1 SBS120 Hydraulic Pump Typical Failures

• Insufficient hydraulic output pressure: Worn cylinder block, piston shoe and valve plate lead to internal oil leakage, weak digging force
• Pump abnormal vibration & metal knocking noise: Scuffed friction surface causes continuous collision noise
• Pump overhigh oil temperature: Long-time heavy load friction of worn internal parts leads to overheating
• Internal and external oil leakage: Aging sealing parts and damaged sealing surface cause hydraulic oil spill
• Unstable flow output: Uneven component wear leads to fluctuating flow and whole machine jitter

2.2 Travel Motor Common Faults

• Travel deviation, unilateral slow moving
• Insufficient climbing torque, machine slips on slopes
• Travel motor oil leakage and abnormal running noise

2.3 Swing Rotary Motor Common Faults

• Weak swing rotation torque, slow slewing
• Swing jitter and friction knocking noise
• Swing shaft oil leakage, swing stuck stall
• Swing motor overheating after continuous operation

2.4 Control Valve Typical Faults

• Control spool stuck by impurities
• Valve body internal leakage, slow boom and bucket action
• Overflow valve pressure abnormality

3. Frequently Asked Questions

1. Q1: What faults can SBS120 hydraulic pump repair kit fix?

   A1: This overhaul kit solves insufficient hydraulic pressure, pump vibration noise, internal oil leakage and pump overheating for SBS120 hydraulic pump used on E320C large excavator.

2. Q2: Are these aftermarket parts compatible with original SBS120 main pump?

   A2: All spare parts adopt standard dimensions, fully compatible with SBS120 piston pump for direct overhaul replacement.

3. Q3: Can I make small trial order?

   A3: We accept single piece trial order and large bulk wholesale, suitable for repair workshops, machinery rental companies and engineering contractors.

4. Q4: Can we ship goods to South Korea?

   A4: Stable sea freight to South Korea, accept small and bulk export orders with professional packaging.

4. Matching Hydraulic Machinery Spare Parts Reference Table

5. Product Advantages

• Complete overhaul spare parts, one-stop purchase for pump maintenance
• Standard aftermarket size, easy direct replacement during repair
• Rich fault keyword coverage, capture overseas repair customer search traffic
• Fit multiple heavy construction working scenarios
• Support small trial order and bulk export wholesale
• Compatible with matching travel motor, swing motor and distributing valve assemblies