YC85 Excavator Swing Relief Valve Compatible with Excavator

1. Product Overview & Wholesale Price Range

The YC85 Excavator Swing Relief Valve is dedicated pressure‑protection spare part for excavator slewing hydraulic loop. It regulates swing working pressure and prevents over‑pressure damage to swing motor and related hydraulic assemblies. Common replacement symptoms include insufficient slewing torque, jittery swing movement, abnormal rotating noise and swing pressure fluctuation.

• Factory Wholesale Price: $142 – $225 USD Direct factory price for hydraulic repair workshops
• Material Specifications: High‑strength alloy steel valve body, precision‑ground spool and heavy‑duty spring assembly, stable pressure‑limiting performance, superior wear‑resistance and sealing performance, long service life
• MOQ & Bulk Discount: 1 Unit, favorable quotation for large‑volume maintenance orders
• Lead Time: 1‑3 working days, sufficient stock supports worldwide logistics delivery
• Warranty: 12‑month replacement warranty, full hydraulic pressure testing completed before shipment

2. Application Scope

Perfectly matches YC85 excavator swing hydraulic system and construction‑machinery overhaul projects:

• Slewing System Overhaul: Direct replacement for worn, stuck or damaged original swing relief valve assembly.
• Hydraulic Fault Repair: Resolve weak slewing torque, jitter swing movement and swing pressure fluctuation failures.
• Repair Workshop: Precise dimension matching, simple installation, reliable pressure‑limiting performance.
• Overseas Parts Dealer: Stable inventory supply, complete QC records support cross‑border spare‑parts trading.

3. Common Swing Relief Valve Failure Troubleshooting

• Fault 1: Excavator Weak Slewing Torque & Slow Swing Rotation
  Cause: Internal spool wear, spring fatigue, dirt trapped inside valve clearance.
  Solution: Install brand‑new Swing Relief Valve, flush swing hydraulic circuit and replace hydraulic filter.
• Fault 2: Jittery Swing Movement & Unstable Slewing Pressure
  Cause: Valve core abrasion, internal spring performance degradation.
  Solution: Fit Swing Relief Valve, thoroughly clean the whole hydraulic oil circuit.
• Fault 3: Swing System Overheat & Abnormal Rotating Noise
  Cause: Internal component wear, oil passages blocked by hydraulic contamination.
  Solution: Replace complete swing relief valve assembly, check hydraulic oil cleanliness.
• Fault 4: Oil Leakage At Swing Valve Mounting Position
  Cause: Seal ring aging, mating surface scratch damage.
  Solution: Replace full swing relief valve assembly or matching seal repair kit.

4. Matching Hydraulic Spare Parts Recommendation

5. Frequently Asked Questions

Q1: How do I confirm this swing relief valve fits my excavator?
A: Please confirm excavator model and installation dimension for fast compatibility verification.

Q2: What quality inspection will be carried out before goods dispatch?
A: Every swing relief valve goes through strict hydraulic test to guarantee stable slewing pressure‑limiting performance.

Q3: What points need attention while installing swing relief valve?
A: Keep mounting surface and oil ports clean to prevent dirt entering valve interior, test swing system pressure after installation.