Guangzhou Qichao Machinery Parts Co., Ltd.
                                                                                                           
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1850008 Main Pump Proportional Solenoid Valve 185-0008 For 320D

Price Negotiable
Price: Please send mail or Whatsapp
MOQ: 1 Piece
Delivery Time: Negotiable
Brand: ZVEZDA
Product Description
1850008 Main Pump Proportional Solenoid Valve 185-0008 For 320D

Integrated cylindrical valve body structure, whole spool precision grinding with ion nitriding anti-wear hardening treatment, high-purity low-loss pure copper integral winding H-grade high temperature resistant enameled coil, black single-pin fully sealed waterproof plug, solid galvanized anti-rust valve shell with built-in smooth multi-layer flow channels, stable pressure response without jitter under long-term high-pressure, dusty open mine construction conditions.

Product Details
Specification Detailed Information
Brand ZVEZDA
Full Product Name 320D Excavator & 120H/140H/160H Motor Grader 24V Hydraulic Main Pump Load Sensing Proportional Solenoid Valve 185-0008 (1850008)
OEM Part Number 185-0008 / 1850008
Compatible Machine 320D Medium Excavator; 120H,140H,160H Series Motor Grader
Matched System Variable Displacement Hydraulic Main Pump Regulator Load Sensing Control Circuit
Rated Voltage DC24V
Plug Feature Black Single-Pin Fully Sealed Waterproof Plug
Condition 100% Brand New Aftermarket OEM Equivalent Complete Assembly
Origin Guangdong, China
Core Material Ion Nitride Hardened Precision Multi-groove Alloy Spool + Low-loss Pure Copper Electromagnetic Coil
Installation Position Excavator/Motor Grader Hydraulic Main Pump Valve Cavity
Shipment Lead Time 1–7 working days after payment confirmation
Outer Packaging Neutral Export Carton + Shockproof EPE Foam Inner Liner



Series 1 PN Series 2 PN Universal Spare Part Numbers
20Y-43-41780 331/30884 4520781
22U-06-22420 331/30885 4581230
22U-06-22380 331/30886 4601592
782-5301-301 701/80284 4632710
782-5301-302 701/80285 4678921
7824-30-1600 11S-49 4756890
7825-30-1301 60117463 4721563
7825-30-1302 60117463LM 4739125
7861-92-4130 60117464 4772106
7861-92-4131 60117465 4789321
20Y-43-41781 YQ05.251.046 4801234
20Y-43-41800 300661-00004A 212-7890
708-2H-25053 21Q6-20820 214-5620
708-2H-25240 702-21-07010 0419-9902
702-21-07311 332/G0912 0419-9903
702-21-07610 60117466 223-8181
702-21-57400 YQ05.251.049 224-2092
585-9230 YN20S00003F1 225-0300
627-2304 7820-30-1700 253-3809
585-9231 4791230 231-8194
702-21-58100 403-0363 198-6528
702-21-57500 485-5747 328-4314
702-21-60700 375-4414-02 384-3892
714-07-16730 485-9850-03 485-5747
201-0950 485-9850-03 491-0908
25/220804 491-0908 553-5204
25/220994 25/220804 25/220994
31Q6-20131 25/220994 31Q6-91220
31Q6-91220 31Q6-20131 086-1879
086-1879 31Q6-91220 31765-FC000
31765-FC000 086-1879 053400-0745
053400-0745 31765-FC000 419-15-47221
419-15-47221 053400-0745 KDRDE5K-20/40C04
KDRDE5K-20/40C04 419-15-47221 31Q6-91720
31Q6-91720 KDRDE5K-20/40C04 25/220804
25/220804 31Q6-91720 25/974628
25/974628 25/220804 4I-5674
4I-5674 25/974628 096-5945
096-5945 4I-5674 111-9916
111-9916 096-5945 111-9100
111-9100 111-9916 56D-15-35220
56D-15-35220 111-9100 DRE2K-X5-937-16
DRE2K-X5-937-16 56D-15-35220 116-3526
116-3526 DRE2K-X5-937-16 121-1490
121-1490 116-3526 121-1491
121-1491 121-1490 708-2H-25053
708-2H-25053 121-1491 708-2H-25240
708-2H-25240 708-2H-25053 198-4607
198-4607 708-2H-25240 195-9700
195-9700 198-4607 186-1526
186-1526 195-9700 129-1525
129-1525 186-1526 185-4254
185-4254 129-1525 185-0008
Frequently Asked Questions
No. Question Standard Answer
Q1 Which construction machinery match 24V main pump solenoid valve 185-0008 1850008? This cylindrical load sensing proportional solenoid fits 320D medium excavator and 120H/140H/160H motor grader hydraulic main pump regulator system.
Q2 What core hydraulic function does this solenoid undertake? It proportionally adjusts the swash plate angle of variable hydraulic pump, dynamically matches engine output power and hydraulic flow to avoid engine stall during heavy-load operation.
Q3 What abnormal hydraulic faults will occur when this solenoid fails? Insufficient digging/leveling power, unstable hydraulic pump pressure, obvious hydraulic jitter during composite action, and continuous abnormal high hydraulic oil temperature.
Q4 Is full disassembly of the hydraulic main pump required during replacement? No, integrated sleeve installation design, only remove the old solenoid and sleeve the new one on the pump valve cavity, no need to split the pump housing.
Q5 What long-life anti-wear high-temperature resistant design? The whole spool adopts ion nitriding hardening treatment, matched double HNBR oil-resistant high temperature sealing rings and fully sealed single-pin waterproof plug to resist long-term oil mist, dust and vibration.
Q6 Are 185-0008 and 1850008 interchangeable spare part numbers? Yes, the two codes correspond to the same complete main pump proportional solenoid assembly and can be replaced mutually.
Q7 How to quickly test coil integrity before installation? Use a multimeter to measure coil resistance, normal range 14–14.8 ohms; infinite resistance represents open circuit, resistance below 10 ohms indicates internal short circuit and cannot be installed.

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Company Guangzhou Qichao Machinery Parts Co., Ltd.
Location 825-827, Zhuji International Machinery City, No.36 Zhuji Road, Tianhe District, Guangzhou, China
Contact Person Sales

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