SBS120 Hydraulic Pump Repair Parts Kit For E320C Large Excavator Overhaul

Core Keywords: SBS120 hydraulic pump repair kit, E320C main pump spare parts, large excavator hydraulic pump overhaul accessories, aftermarket hydraulic replacement spare parts, heavy digger pump repair components

• Urban high-rise large residential foundation excavation & basement heavy digging construction
• Highway, bridge & municipal road reconstruction heavy-load long-hour excavation work
• Open-pit quarry & stone mine large rock crushing & bulk mineral transport operation
• River dredging, channel renovation & large water conservancy engineering deep excavation
• Sand yard bulk aggregate loading large excavator frequent hydraulic pump operation
• Seoul urban old community transformation & subway foundation heavy excavation construction
• Port bulk cargo loading large construction machinery all-day continuous working
• Independent machinery repair shop large excavator full hydraulic system overhaul maintenance service

This SBS120 hydraulic pump repair kit perfectly fits all heavy-load large construction scenes. Complete internal pump drive accessories thoroughly solve hydraulic main pump failure problems and effectively reduce equipment downtime for global excavator repair shops, machinery rental merchants and engineering contractors.

• Insufficient hydraulic output pressure: Worn cylinder block, piston shoe and swash plate cause internal oil leakage, whole machine slow digging & weak excavation power
• Abnormal metal collision noise & pump vibration during running: Scuffed friction surface generates harsh continuous collision noise
• Pump overhigh oil temperature: Long-hour continuous friction of worn internal parts leads to rapid temperature surge
• Main pump housing oil leakage: Aging piston seal and end cover seal ring result in sustained hydraulic oil spill
• Unstable oil flow output: Worn friction surface causes fluctuating oil supply and whole excavator jitter while digging
• Slow digging action: Worn valve plate leads to insufficient oil supply, low construction efficiency

• Travel deviation, unilateral slow walking: Worn piston and valve plate lead to inconsistent left-right displacement, excavator drifts during moving forward & backward
• Single side no travel output power: Broken reduction gear, stuck parking brake cannot release normally, one track completely immobile
• Poor ramp climbing performance: Insufficient driving torque caused by internal friction part wear, machine slides backward on steep slopes
• Final drive oil leakage: Aging shaft seal leads to hydraulic oil outflow from walking motor shell
• Abnormal walking metal collision noise & vibration: Worm gear and bearing wear produce harsh sound during travel
• Travel motor overhigh temperature: Long-hour heavy load friction triggers rapid temperature rise

• Weak swing rotation torque: Internal distribution plate and seal wear lead to insufficient swing power, slow left-right rotation
• Swing jitter & abnormal friction noise: Damaged reducer bearing creates harsh metal knocking noise during slewing
• Swing shaft oil leakage: Damaged rotary oil seal leads to continuous hydraulic oil spill from swing motor housing
• Swing stuck stall: Long continuous rotation leads to internal overheating and clamping stagnation, unable to rotate freely
• Swing system overhigh temperature: Long-hour heavy load swing friction accelerates seal aging
• Swing unilateral deviation: Uneven internal gear wear leads to inconsistent swing speed left and right

• Spool stuck: Hydraulic oil impurities block spool gap, heavy operation handle, slow boom & bucket action reset
• Internal & external oil leakage: Worn gap between spool and valve body leads to oil leakage, mutual interference of each digging action
• Overflow valve pressure failure: Stuck relief valve causes system zero pressure or pipeline burst due to overpressure
• Control valve slow response: Aging internal seal leads to delayed action of boom, arm and bucket

• Insufficient power & black exhaust smoke: Blocked air filter, aging fuel injector lead to incomplete combustion
• Excessive water temperature & engine oil temperature: Radiator silt blockage, deteriorated engine oil trigger high temperature alarm
• Difficult cold startup: Starter failure, battery aging or air entering fuel pipeline
• Engine abnormal knocking noise: Worn internal piston and bearing produce harsh collision sound during operation

A1: This SBS120 main pump overhaul kit fully repairs insufficient hydraulic pressure, pump metal collision noise, overhigh oil temperature, pump housing oil leakage and slow digging speed caused by internal cylinder block, piston and valve plate wear of large heavy excavator main pump.

A2: All aftermarket spare parts inside the SBS120 kit are fully compatible with matching SBS120 main pump internal structure, stable hydraulic output pressure can be fully restored after complete overhaul replacement.

A3: Our hydraulic overhaul spare parts cooperate to solve swing weak rotation torque, swing jitter noise, swing shaft oil leakage and swing stuck stall for E320C heavy excavator swing motor.

A4: We support single piece trial order and large bulk wholesale, suitable for local maintenance shops, heavy construction machinery rental merchants and engineering contractors.

A5: Our SBS120 hydraulic main pump overhaul repair kit supplies local Seoul heavy machinery repair shops, stable sea bulk shipment to South Korea, single and batch orders are acceptable.

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