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RITO 312408 Head Cover ZX200 ZX240 EX200-5 HPV102 HPV105 312408 Hydraulic Pump Rear Cover End Cap Excavator Spare Parts Part

Noticeable pressure drops or external oil weeping around your main pump's rear valve cover block? Microscopic stress cracks or warped sealing ports inside a worn casting allow high-pressure oil to bleed off internally, reducing flow to your control valves and overheating the system. Secure your hydraulic heart with the ultra-flat RITO 312408 head cover.

  • Item NO.:

    312408
  • Order(MOQ):

    1
  • Payment:

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

    JAPAN
  • Lead Time:

    2-3 DAYS
  • Product Details

Heavy machinery machine极 shops need premium-grade replacement castings that can handle extreme back-pressure surges without distortion. The RITO 312408 end cap features precision-milled fluid passages that maintain correct oil distribution paths during heavy digging. Add this robust repair component to your workshop inventory to ensure reliable pump rebuilds.

312408 Head Cover

 
Product Specifications

Part Number  312408
Part Name Hydraulic Pump Rear Cover End Cap Excavator Spare Parts Part
Compatible Brand Tongmyung
Applicable Models Hitachi ZX210, ZX210LCH Series
Application Excavator hydraulic system
Material High‑strength Alloy Steel
Product Color Matte Steel Grey
Working Temperature -35°C to 115°C
Key Function Sealing the rear pump block and directing high-pressure fluid flow
Condition 100% New, Aftermarket / OEM Quality
Packaging Wooden Case/Reinforced Carton/Neutral Packing / Customized Box

 

Key Features & Advantages


Precision

Precision Milled Port Faces

Ultra-flat mounting surfaces ensure a perfect, leak-free seal against the valve plate.

Leak-Free

High-Tensile Cast Construction

Advanced alloy composition easily resists cracking under continuous high-pressure spikes.

Direct Fitment

Smooth Internal Oil Galleries

Streamlined flow passages lower fluid restriction to help prevent system overheating.

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 signs indicate that the rear 312408 head cover has sustained internal structural damage?
A: A permanent loss of pressure in one specific pump circuit, combined with high casing oil temperatures. This indicates that high-pressure oil is cutting a channel across the internal sealing bridges directly into the low-pressure case.
 
Q: Installation Standards: What torque sequence must be followed when bolting this heavy rear cover onto an HPV102 pump housing?
A: Mechanics must follow a cross-diagonal star pattern, tightening the socket-head bolts in three gradual stages to factory torque specs. Uneven tightening can warp the casting, leading to high-pressure oil leaks later on.
 
Q: Procurement Verification: Does this 312408 valve cover assembly work with both HPV102 and HPV105 series pumps?
A: Yes, it is engineered to fit both the 102cc and 105cc pump configurations used on standard 20-ton class excavators. The port positioning and internal bolt hole alignments are identical across these series.
 
Q: Extreme Environment Performance: How does this hydraulic head cover prevent port distortion under continuous heavy rock breaking?
A: The alloy casting undergoes a stress-relieving thermal treatment during production. This ensures the structural bridges stay completely flat and true, preventing internal oil bypass even during severe, high-vibration rock breaking shifts.
 
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.

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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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