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RITO 313209 Head Cover EX300-5 ZX330 HPV145 Hydraulic Pump Rear Cover Valve Cover Excavator Pump Repair Parts

Cracked pump head covers cause high-pressure oil leaks, turning an active job site into a major safety hazard. Micro-fissures in weak aftermarket rear covers allow oil blow-by, dropping system pressure and slowing down operations. Stop pressure loss immediately with the robust RITO 313209 pump cover.

  • Item NO.:

    313209
  • Order(MOQ):

    1
  • Payment:

    T/T, WESTERN UNION, CHINESE BANK,PAYPAL
  • Product Origin:

    JAPAN
  • Lead Time:

    2-3 DAYS
  • Product Details

Restore original hydraulic containment and system pressure with this precision-cast end cap. Machinery repair workshops rely on the RITO 313209 rear housing component to provide mining clients with long-lasting structural integrity and reliable sealing performance.

313209 Head Cover

 
Product Specifications

Part Number  313209 / EX300-5 / ZX330
Part Name Hydraulic Pump Rear Cover Valve Cover
Compatible Brand Tongmyung
Applicable Models EX300-5, ZX330 HPV145 Hydraulic Pumps
Application Excavator hydraulic system
Material High‑strength Alloy Steel
Product Color Matte Steel Grey
Working Temperature -30°C to 120°C
Key Function Sealing the rear pump group and routing high pressure oil
Condition 100% New, Aftermarket / OEM Quality
Packaging Wooden Case/Reinforced Carton/Neutral Packing / Customized Box

 

Key Features & Advantages


Precision

High-Tensile Cast Steel

Resist structural cracking from intense high-pressure pulses in the hydraulic circuit.

Leak-Free

CNC Machined Port Faces

Ensure perfectly flat sealing surfaces to completely eliminate external oil leaks.

Direct Fitment

Precision Control Passages

Deliver unrestrictive internal pilot oil flow for accurate regulator response.

Rigorous Testing

 Multi-Tier Quality Options

We provide Original, OEM, and Premium Aftermarket grades, allowing distributors to meet diverse client budgets and performance needs.

 

Excavator Hydraulic Part

FAQ


Q: Fault Diagnosis: What problems develop if a pump head cover is warped or cracked?
A: Visible oil spray along the pump rear seam, slow regulator tracking, and rapid pressure drops occur, which can score internal rotating groups if left unaddressed.
 
Q: Installation Standards: What torque practices are needed when installing the 313209 cover?
A: Use a calibrated torque wrench to tighten bolts in a cross pattern according to factory specs. Ensure the main O-ring sits flat in its groove without twists.
 
Q: Procurement Verification: Will this head cover fit any standard HPV145 hydraulic pump?
A: It is designed specifically for HPV145 pumps on EX300-5 and ZX330 excavators. Please verify your exact pump model code before ordering.
 
Q: Extreme Environment Performance: How does this cover perform under extreme system pressure spikes?
A: Engineered with a high safety fatigue margin, the cast structure handles continuous operational heat up to 120°C and sudden pressure spikes without structural distortion.
 
Q:  What quality options are available?

A: We provide original, OEM, and high-quality aftermarket versions with stable supply capability.

 

Q:Why Choose RITO?
A:Listed Factory
   Stable&Reliable Quality
   OEM Factory for Chinese Top Excavator Brands
   Supplier to Fortune 500 Companies

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If you are interested in our products and want to know more details,please leave a message here,we will reply you as soon as we can.

Leave A Message

Leave A Message
If you are interested in our products and want to know more details,please leave a message here,we will reply you as soon as we can.

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