中文
Welcome to Guangzhou HanRui Hydraulic Co., Ltd. We specialize in providing the complete K5V160DP / K5V160DTP excavator hydraulic main pump assembly and spare parts repair kit (including cylinder blocks, piston shoes, valve plates, swashplates, and drive shafts), precision-manufactured as heavy-duty aftermarket replacement parts compatible with Kawasaki, Cater.pillar, Kobelco, and Doosan engineering machinery equipment. Located in Guangzhou Tianhe Engineering Machinery Business Circle, we deliver OEM-quality hydraulic components directly to global clients at factory-wholesale prices.
Heavy-Duty Application & Working Scenarios
Engineered to withstand extreme hydraulic demand, delivering uninterrupted flow without pressure fade:
- Quarrying & Hard Rock Digging: High-hardness valve plates and pistons handle peak working pressures up to 350 Bar during heavy bucket breakout.
- Deep Trenching & Earthmoving: Micro-lapped rotary group components maintain high dual-pump volumetric efficiency for smooth compound movements.
- Hydraulic Breaker Operations: Heavy-duty swashplates and reinforced cradle bearings absorb severe shock loads from breaker attachments.
- Fleet Rebuilding & Overhaul: Complete repair kit sets enable quick, cost-effective on-site main pump rebuilding.
K5V160DP Hydraulic Main Pump Fault Diagnosis & Troubleshooting
Facing main pump performance degradation? Over 90% of field repair searches involve these 5 common hydraulic pump issues. Here is how our K5V160DP Spare Parts & Overhaul Kit resolves them:
1. Engine Stalling / Overloading Under Heavy Load (控泵熄火 / 闷车)
Symptom: The engine bogs down or shuts off completely when raising the boom or digging into hard ground.
Cause: Sticking pump regulators, worn swashplate cradle bearings, or damaged servo pistons failing to reduce pump displacement.
Solution: Replacing worn K5V160DP swashplate assemblies and regulators restores proper displacement control and eliminates engine stalling.
2. System Pressure Drop & Weak Digging Force (系统掉压 / 工作无力)
Symptom: Slow hydraulic cylinder speed, weak bucket digging power, and performance loss when oil heats up.
Cause: Micro-scoring and clearance expansion on cylinder block faces, valve plates, or loose piston shoes causing internal oil bypass.
Solution: Precision-milled K5V160DP cylinder blocks and spherical valve plates eliminate inner slippage and rebuild full 350 Bar pressure.
3. Hydraulic Oil Leakage at Main Shaft & Housing (主泵漏油)
Symptom: Hydraulic fluid leaking around the front drive shaft oil seal or intermediate housing gaskets.
Cause: Shaft seal wear from high casing backpressure or seal lip hardening from high temperatures.
Solution: High-pressure NOK shaft seals and precision-ground drive shafts ensure zero external oil leakage.
4. Pump Cavitation Noise & Severe Vibration (泵体异响 / 抖动)
Symptom: High-pitched grinding noise or severe hydraulic pipe vibration under pump loading.
Cause: Broken spherical bushes, worn drive shaft splines, or damaged needle roller bearings.
Solution: Heat-treated drive shafts, spherical bushes, and precision needle bearings restore smooth, quiet pump rotation.
5. Hydraulic Oil Overheating & Thermal Fade (主泵发热高温)
Symptom: Hydraulic fluid temperature spikes rapidly after 30 minutes of continuous operation.
Cause: High friction and internal fluid bypass within severely worn rotary group parts.
Solution: Replacing the complete K5V160DP rotary group kit restores tight tolerances and keeps oil temperatures low.
Hot Popular Excavator Hydraulic Main Pumps & Spare Parts Catalog
Explore our factory-direct aftermarket catalog for major construction equipment brands:
| Machine Model (型号) | Part Number (零件号) | Component Name (品名) | Compatible Brand (适配品牌) | Target Fault Solved |
|---|---|---|---|---|
| CAT 336D / 330D | K5V160DP / 259-0815 | Hydraulic Pump Repair Kit / Parts | Compatible with Cater.pillar / Kawasaki | Fixes Engine Stalling & Low Pressure Loss |
| SK330-8 / SK350-8 | K5V160DTP / LQ10V00018F1 | Hydraulic Main Pump Assembly / Parts | Compatible with Kobelco / Kawasaki | Fixes Slow Movement & Oil Bypass Leakage |
| SY335C / SY365C | K5V160DP / K5V160DTH | Main Pump Rotary Group Overhaul Kit | Compatible with SANY / Kawasaki | Fixes Pump Cavitation Noise & High Temp |
| DX340 / DX350 | K5V160DP-2N7X | Main Hydraulic Piston Pump Parts | Compatible with Doosan / Kawasaki | Fixes Boom Hesitation & Shaft Oil Leakage |
| PC300-8 / PC350-8 | 708-2G-00020 / HPV160 | Hydraulic Main Pump Assembly | Compatible with Komatsu | Fixes Weak Digging Force & Pressure Fade |
Frequently Asked Questions (Troubleshooting & Fitment)
Q: What is the price range for K5V160DP hydraulic pump spare parts and repair kits?
A: Direct from our Guangzhou factory, the wholesale price range for a complete K5V160DP / K5V160DTP repair kit (cylinder block, piston shoes, valve plate, swashplate) is $280.00 – $850.00 USD per set. Complete main pump assemblies range from $1,800.00 to $2,850.00 USD, saving 30% to 50% compared to local OEM dealer prices.
Q: Which excavator models use the Kawasaki K5V160DP / K5V160DTP hydraulic pump?
A: The K5V160DP / K5V160DTP hydraulic pump is widely used on 30-to-38-ton excavators, including Cater.pillar CAT 336D / 330D, Kobelco SK330-8 / SK350-8, Doosan DX340 / DX350, SANY SY335C / SY365C, and Hyundai 300-6 excavators.
Q: What parts are included in a full K5V160DP overhaul kit?
A: A full K5V160DP overhaul kit includes: 1 Cylinder Block, 9 Piston Shoes, 1 Valve Plate (Right or Left), 1 Set Plate, 1 Spherical Bush, 2 Swashplate Assemblies, Drive Shaft (Front & Rear), Bearings, and a High-Pressure Seal Kit.
