702-21-07010 568-15-17210 Hydraulic Pump Solenoid Valve for Caterpillar 320D 336D D6R Replacement

Ensure your heavy machinery operates with surgical precision by installing the premium 702-21-07010 and 568-15-17210 hydraulic pump solenoid valves. These silver-white finished components are specifically engineered to handle the rigorous pressure demands of high-duty cycles. As a specialized supplier for Caterpillar equipment, we provide the durability and rapid response times required to eliminate hydraulic lag in your excavators and dozers.

1. Comprehensive Technical Specifications

Specification CategoryProduct Detail
Model CompatibilityCaterpillar CAT 320D, 320DL, 323D, 330D, 336D, 345D, D6R, D7R, D8R
Part Number (P/N)702-21-07010 / 7022107010, 568-15-17210 / 5681517210
Product TypeSilver-White Hydraulic Pump Proportional Solenoid Valve
ConditionBrand New, OEM Standard Replacement
Minimum Order Quantity (MOQ)1 Piece
Payment OptionsT/T, Western Union, MoneyGram
Global DeliveryDHL, Fedex, EMS, UPS, Air Freight, Sea Cargo
Stock LevelReady for Immediate Dispatch
Maintenance ScopeEngine overhaul, hydraulic system rebuild, daily maintenance

2. Comparison: Why Our OEM-Standard Solenoids Outperform

Choosing the right solenoid valve is critical for preventing pump cavitation and ensuring smooth control. Here is how our premium 702-21-07010 valve compares to low-end market alternatives.

Core Purchasing PointsOur High-Grade ReplacementStandard Aftermarket Part
Coil MaterialHigh-purity copper for heat stabilityMixed alloys prone to overheating
Plunger TolerancePrecision ground to micron levelsRough finish leading to early sticking
Surface CoatingAdvanced silver-white corrosion protectionBasic paint or zinc prone to peeling
Seal IntegrityHigh-temp fluororubber O-ringsStandard nitrile seals that harden quickly
Pressure SensitivityInstant response to ECU signalsDelayed action causing jerky arm movements
Durability TestCertified for 10,000+ working hoursOften fails under peak summer temperatures

3. Troubleshooting & Frequently Asked Questions (FAQ)

Question: My CAT 320D is experiencing slow hydraulic cycles. Is the 702-21-07010 solenoid the cause?

Answer: Yes, it is very likely. This solenoid controls the pump's displacement. If the valve is clogged or the internal spring has weakened, it will not allow the pump to reach full flow. We recommend checking the voltage at the plug; if power is present but flow is low, replacing the valve with a new 7022107010 is the standard fix.

Question: How do I handle 568-15-17210 installation on a D6R dozer?

Answer: Ensure the hydraulic oil is cool and the system pressure is bled off. Clean the mounting area thoroughly to prevent contamination. Our 5681517210 is a direct drop-in replacement, so no modification to the wire harness is needed.

Question: Why Choose This Hydraulic Pump Solenoid Valve?

Answer: It features an OEM-standard tri-metal structure for maximum electrical conductivity and mechanical strength. Trusted by repair shops and equipment fleets, this part ensures your Caterpillar machine maintains factory-level performance.

4. Professional Support for Equipment Maintenance

Not sure how this issue affects your equipment? Our team helps operators achieve maximum uptime:

  • Identify potential risks: We help detect early signs of solenoid failure before they damage the main pump.

  • Recommend suitable replacements: Get the exact 702-21-07010 or 568-15-17210 match for your specific serial number.

  • Technical Advice: Support both inspection advice and high-quality parts supply for overhauls.

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