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The part number for the Komatsu D65-12 d85-12 bulldozer main control valve assembly is 723-63-21102 723-63-21103 723-63-21104 723-63-22100

The part number for the Komatsu D65-12 d85-12 bulldozer main control valve assembly is 723-63-21102 723-63-21103 723-63-21104 723-63-22100

723-63-21102

723-63-21102 control valve assembly

Komatsu D65-12 Control Valve Assembly

Place of Origin:

China

Brand Name:

CAVOYD

Certification:

ISO90001

Model Number:

D65-12、D65EX-12、D65PX-12

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The part number for the Komatsu D65-12 d85-12 bulldozer main control valve assembly is 723-63-21102 723-63-21103 723-63-21104 723-63-22100 The part number for the Komatsu D65-12 d85-12 bulldozer main control valve assembly is 723-63-21102 723-63-21103 723-63-21104 723-63-22100 The part number for the Komatsu D65-12 d85-12 bulldozer main control valve assembly is 723-63-21102 723-63-21103 723-63-21104 723-63-22100 The part number for the Komatsu D65-12 d85-12 bulldozer main control valve assembly is 723-63-21102 723-63-21103 723-63-21104 723-63-22100 The part number for the Komatsu D65-12 d85-12 bulldozer main control valve assembly is 723-63-21102 723-63-21103 723-63-21104 723-63-22100
Product Details
Part No:
723-63-21103、723-63-21104、723-63-22100、723-63-21102
Packaging Details:
Wooden Case / Cartonwith Foam Protection, Or As Required
Warranty:
6 Months
Transportation Method:
DHL, UPS, FedEx, Sea Freight
Payment Terms:
Western Union, T/T, Assurance
Condition:
New / Rebuilt
Product Name:
Bulldozer Control Valve
Highlight:

723-63-21102

,

723-63-21102 control valve assembly

,

Komatsu D65-12 Control Valve Assembly

Payment & Shipping Terms
Minimum Order Quantity
1 set
Price
Negotiable
Packaging Details
Wooden Case / Carton with Foam Protection, or as Required
Delivery Time
3-7 Weekdays
Payment Terms
T/T
Supply Ability
100pcs/day
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CONTACT US
86--18127821703
280835749@qq.com
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Product Description
Komatsu D65-12 D85-12 Bulldozer Main Control Valve Assembly
Part Numbers: 723-63-21102, 723-63-21103, 723-63-21104, 723-63-22100
Common Faults & Troubleshooting
  • A specific action is weak / not working: Stuck spool in that section, spool/sleeve wear causing internal leakage, damaged O-rings. First measure the outlet pressure of that section to diagnose.
  • All actions are weak: Usually caused by insufficient main pump pressure or a failed main Relief Valve pressure setting. Check system pressure first before disassembling the valve.
  • Erratic / jittery movement: Stuck spool, fatigued springs, unstable pilot control pressure, contaminated oil.
  • Oil leakage: Aged O-rings on valve body joints and spool seals, causing external seepage or internal leakage.
  • High oil temperature: Excessive internal leakage in the valve group, abnormal throttling.
Repair & Purchasing Recommendations
  • Minor faults: Clean the spool, replace the O-ring seal kit, lap the spool.
  • Scored spool / worn sleeve: Replace the spool parts or the complete valve assembly.
  • When ordering: Confirm the specific sub-model and the original old part number
Komatsu bulldozer main control valve assembly diagram or reference photo
Tags：

main control valve

komatsu control valve

control valve assembly

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Guangzhou Kawo Construction Machinery Co.,Ltd.
With 20 years of professional experience in construction machinery hydraulics, CAVOYD focuses on hydraulic spare parts supply and remanufacturing for excavators, bulldozers and loaders. We mainly supply hydraulic pumps, control valves, swing assemblies, travel assemblies, fan pumps and fan motors. Our parts fit Caterpillar, Komatsu, Volvo, Hitachi, Kobelco, Sany, Doosan and other mainstream brands. We provide high-quality new parts and precision remanufactured parts, serving global clients wit
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