E320C SBS120 Hydraulic Pump Core Parts Kit - Cylinder Block, Shaft, Pistons, Valve Plate For Medium Large Excavator Overhaul

Welcome to HanRui hydraulic supply. We specialize in providing the complete E320C SBS120 hydraulic main pump core parts kit with cylinder block, shaft, pistons and valve plate, precision-manufactured as heavy-duty aftermarket replacement pump spare parts compatible with Cater.pillar large engineering machinery equipment.

Core Keywords: E320C SBS120 hydraulic pump core parts kit, SBS120 pump cylinder block, E320C main pump pistons & valve plate, medium large excavator hydraulic pump overhaul accessories, aftermarket pump replacement spare parts

• Urban large residential district foundation excavation & basement continuous heavy digging project
• Highway, bridge & municipal road reconstruction heavy-load long-hour excavation work
• Open-pit quarry & stone mine large rock crushing & bulk material transfer operation
• River dredging, channel renovation & large water conservancy engineering excavation
• Suburb sand yard bulk sand 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 E320C SBS120 hydraulic pump core parts kit perfectly matches heavy-load construction scenes. Complete cylinder block, drive shaft, piston and valve plate spare parts thoroughly solve all hydraulic main pump failure problems and effectively cut down 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 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 sharp 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 excavation 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 walking output power: Broken reduction gear, stuck parking brake cannot release, 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
• Walking metal collision noise & vibration: Worm gear and bearing wear produce harsh sound during travel

• Weak swing rotation & easy sliding on slopes: Internal distribution plate and seal wear lead to high-pressure oil leakage, unable to lock position on inclined ground
• Swing jitter & friction noise: Damaged reducer bearing creates harsh metal noise during left-right slewing
• Swing shaft oil leakage: Damaged rotary oil seal leads to hydraulic oil spill from swing motor housing
• Swing stuck stall: Long continuous rotation leads to internal overheating and clamping stagnation

• 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

• 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

A1: This E320C 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.

A2: All core spare parts inside E320C aftermarket pump kit are fully compatible with matching SBS120 main pump internal structure, stable hydraulic output pressure can be fully restored after full replacement overhaul.

A3: We support single piece trial order and large bulk wholesale, suitable for small local maintenance shops, construction machinery rental merchants and engineering contractors.

A4: Our E320C SBS120 hydraulic main pump core parts kit supplies local Seoul machinery repair shops, stable sea bulk shipment to South Korea, single and batch orders are both acceptable.

A5: Our E320C aftermarket hydraulic pump core parts kit is designed as compatible replacement spare parts for matching Cater.pillar large excavator hydraulic system, all cylinder block, shaft, piston and valve plate accessories fit perfectly.

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