SH75 SH80 Vio75 18251-10000 PVC80 KYB PVC80 Hydraulic Main Pump Repair Kit Compatible with Sumitomo Kato Yanmar Kubota
1. Product Overview & Wholesale Price Range
The KYB PVC80 Hydraulic Main Pump Repair Kit (OEM Part # 18251-10000 / 172A03-73010 / PVC80 / PVC80R) includes the complete internal rotary group: cylinder block, piston shoes with bronze slippers, distributor valve plate (RH/LH), retainer plate, ball guide, swash plate, and drive shaft built for 7-to-8-ton excavators undergoing main pump overhauls.
- Factory Wholesale Price: $320 – $750 USD (Direct manufacturer pricing — Save up to 50% vs regional dealer markups)
- Included Spare Parts: Cylinder Block (1pc) + Piston Shoes (9pcs) + Valve Plate (1pc) + Retainer Plate (1pc) + Ball Guide (1pc) + Swash Plate (1pc) + Drive Shaft (1pc)
- MOQ & Bulk Discount: 1 Set (Tiered wholesale discounts available for repair shop bulk orders)
- Lead Time: 1–3 business days (Large factory stock ready for immediate dispatch)
- Warranty: 12 Months full replacement warranty with high-lead bimetallic bronze durability guarantee
2. Application Worksite Checklist (施工场景清单)
Precision-ground surface finishes engineered to restore full hydraulic working pressure under high-intensity field operations:
- Urban Pipe Trenching & Utility Installation: Restores fine metering and smooth boom control during ditch digging with Sumitomo SH75 excavators.
- Highway Repair & Municipal Earthmoving: High volumetric efficiency ensures zero speed drop during fast bucket loading cycles on Yanmar Vio75 excavators.
- Forestry Land Clearing & Agricultural Drainage: Bimetallic valve plates prevent internal thermal oil bypass during long continuous operating hours in hot outdoor climates.
- Demolition & Small Breaker Operation: Forged alloy steel piston shoes protect against severe pressure shockwaves from hydraulic hammer attachments.
3. Hydraulic Pump Overhaul & Fault Diagnostic Guide (维修包常见故障排查)
If your 7–8 ton excavator main pump is exhibiting hydraulic pressure degradation, check the wear symptoms below:
- Fault 1: Thermal Pressure Loss & Machine Slowdown After 1 Hour (热车掉压发慢/内泄)
Root Cause: Wear gap between the cylinder block face and valve plate surface causing internal high-pressure thermal oil bypass.
Solution: Replace the worn rotary group with our precision lapped PVC80 cylinder block and valve plate kit (OEM 18251-10000). - Fault 2: Engine Stalls or Lacks Digging Force Under Heavy Load (憋车熄火/无力)
Root Cause: Scoring on piston shoe bronze slippers or sticking in the swashplate cradle pivot.
Solution: Install new PVC80 high-lead bronze piston shoes and swashplate group to restore smooth stroke response. - Fault 3: Black Copper Filings Found in Hydraulic Tank Oil Filter (油箱内有黑粉铜屑)
Root Cause: Friction galling and thermal melting of the bimetallic bronze layer on the piston slippers.
Solution: Flush the entire hydraulic oil circuit, clean control valves, and rebuild pump with a new PVC80 repair kit. - Fault 4: Abnormal Pulsation Noise & Chattering From Pump Housing (泵体异响/震动)
Root Cause: Broken retainer plate spring, worn ball guide, or pitted swashplate surface.
Solution: Replace ball guide, retainer plate, and swashplate assembly to eliminate mechanical chatter.
4. Hot Machinery Replacement Parts Recommendation (5大品类热门推荐表)
Explore our factory-direct replacement hydraulic components compatible with major global excavator brands:
| Category (品类) | Machine Model (适用型号) | OEM Part Number (零件号) | Compatibility (适配品牌) |
|---|---|---|---|
| Hydraulic Pump Repair Kit | Sumitomo SH75 / Yanmar Vio75 | 18251-10000 / PVC80 | Compatible with Sumitomo Yanmar |
| Hydraulic Motor Repair Kit | SK330-8 / SK350-8 | YN15V00018F1 / MSF340VP | Compatible with Kobelco |
| Hydraulic Pump Repair Kit | PC60-5 / PC60-6 / PC60-7 | 708-1W-00030 / HPV35 | Compatible with Komatsu |
| Hydraulic Main Pump | CAT 320C / 320D | 200-3269 / SBS120 | Compatible with Cat-erpillar |
| Hydraulic Main Pump | HD820-3 / HD820-2 | 709-10-00100 / K3V112DT | Compatible with Kato |
| Slewing Motor Assembly | SK120-5 / SH120 | YN15V00001F1 / MSG-85P | Compatible with Kobelco Sumitomo |
| Diesel Engine Assembly | PC400-7 / PC450-7 | 6251-11-1001 / SAA6D125E-3 | Compatible with Komatsu |
5. Frequently Asked Questions & Technical Support (QA 问答专区)
Q1: How do I verify if this PVC80 repair kit fits my Sumitomo SH75 excavator main pump?
A: Check your original pump nameplate for OEM part numbers 18251-10000, 172A03-73010, or PVC80 stamp. You can also send us clear photos of your old cylinder block and piston slippers for instant verification.
Q2: What is the material specification of the PVC80 cylinder block and valve plate?
A: Our PVC80 cylinder blocks are manufactured from high-density alloy steel with bimetallic copper-alloy distributor faces, rated for continuous 320 Bar working pressure.
Q3: Is this PVC80 repair kit a complete drop-in solution for hydraulic pump rebuilds?
A: Yes, the kit includes all major internal wear components (cylinder block, 9 pistons, valve plate, retainer plate, ball guide, swashplate, and drive shaft) required for a complete pump overhaul.
