Dongfang 60 Main Relief Valve Compatible with Excavator

1. Product Overview & Wholesale Price Range

The Dongfang 60 Main Relief Valve is the key pressure‑limiting spare part of excavator main hydraulic circuit. It sets and stabilizes overall system working pressure, protects hydraulic pump and main valve assembly from over‑pressure damage. Common replacement symptoms include weak digging force, boom & arm jitter, low system pressure and unstable pressure value.

• Factory Wholesale Price: $132 – $210 USD Direct factory price for hydraulic repair workshops
• Material Specifications: High‑strength alloy steel valve body, precision‑ground spool assembly, durable pressure‑regulating spring and sealing groups, stable pressure‑limiting performance, excellent wear‑resistance for long service life
• MOQ & Bulk Discount: 1 Unit, preferential quotation for large‑volume maintenance orders
• Lead Time: 1‑3 working days, sufficient stock supports worldwide logistics shipment
• Warranty: 12‑month replacement warranty, full hydraulic pressure performance testing completed before shipment

2. Application Scope

This Main Relief Valve suits Dongfang 60 excavator hydraulic maintenance and overhaul scenarios:

• Main Hydraulic Circuit Overhaul: Direct replacement for worn, stuck or damaged original main relief valve assembly.
• Hydraulic Fault Repair: Solve weak digging power, working device jitter, low system pressure and pressure‑loss failures.
• Repair Workshop Usage: Strict dimensional tolerance, convenient installation, stable pressure‑limiting performance.
• Overseas Parts Reseller: Stable inventory supply, complete QC documents support cross‑border spare‑parts trading.

3. Common Main Relief Valve Failure Troubleshooting

• Fault 1: Excavator Weak Digging Force & Low System Pressure
  Cause: Internal spool wear, spring fatigue, hydraulic impurity jamming valve core clearance.
  Solution: Install brand‑new Main Relief Valve, flush hydraulic circuit and replace hydraulic filter element.
• Fault 2: Boom & Arm Jitter & Unstable Hydraulic Pressure
  Cause: Valve‑core abrasion, pressure‑regulating spring performance degradation.
  Solution: Fit new Main Relief Valve, fully clean the whole hydraulic oil circuit.
• Fault 3: System Over‑pressure & Hydraulic Component Damage Risk
  Cause: Internal parts stuck, oil passages blocked by hydraulic contamination.
  Solution: Replace complete main relief valve assembly, inspect hydraulic oil cleanliness.
• Fault 4: Oil Leakage At Main Relief Valve Mounting Surface
  Cause: Seal ring aging, mating surface scratch damage.
  Solution: Replace full main relief valve assembly or matched seal repair kit.

4. Matching Hydraulic Spare Parts Recommendation

5. Frequently Asked Questions

Q1: How to confirm this main relief valve fits my Dongfang 60 excavator?
A: Please provide machine model and installation dimension for fast compatibility check.

Q2: What quality test will be performed before shipment?
A: Every main relief valve passes professional hydraulic pressure‑regulating test to guarantee stable system pressure performance.

Q3: What points should be noticed during installation?
A: Keep mounting face and oil ports clean to avoid dirt entering valve interior, test main system pressure after installation.