7022157400 Main Control Pilot Solenoid OE 702-21-57400 For PC200-7 PC220-7
Product Details
| OE Part Number: | 702-21-57400 | Application: | Excavator Pilot Hydraulic Oil Circuit Control |
|---|---|---|---|
| Compatible Equipment: | Komatsu PC200-7,PC210-7,PC220-7,PC240-7,PC270-7 Excavator | Warranty: | 6 Months |
| Order Processing Cycle: | Normally 1–7 Working Days Once Payment Received | ||
| Highlight |
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Product Description
It is the core proportional pressure regulating component of the whole machine hydraulic pilot system. It converts ECU current signals into stable adjustable pilot hydraulic pressure, steplessly controls the opening of main valve spools to realize smooth speed regulation of boom, arm, bucket and swing actions.
| Item Attribute | Technical Parameter |
|---|---|
| Commercial Title | Square Block Pilot Proportional Pressure Control Solenoid For PC-7 Series Excavator Main Control Valve |
| Cross Reference PN | 7022157400 (Short Code:702-21-57400) |
| Applicable System | Excavator Main Valve Stepless Pilot Proportional Hydraulic Control Circuit |
| Quality Grade | Dust-proof Anti-vibration High Temp Heavy Duty Replacement Standard |
| Production Base | Guangdong, China |
| Product Category | Medium Excavator Main Control Valve Hydraulic Electrical Control Components |
| Electrical Spec | Coil Resistance 14.2Ω, Rated Control Current 705mA |
| Continuous Working Temp | Up to 123℃ without seal aging and pressure signal drift |
| Order Processing Cycle | Normally 1–7 working days once payment received |
| Custom Service | Custom Logo & Custom Export Carton Available For Bulk Orders |
| MOQ Support | 1 Piece Sample Order Acceptable For On-site Machine Compatibility Test |
| Komatsu Parts | JCB Parts | Other Brand Parts |
|---|---|---|
| 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-43-41782 | YQ05.251.047 | 106-0107 |
| 22U-06-22390 | YQ05.251.048 | 106-0108 |
| 22U-06-22400 | YN20S00002F3 | 106-0109 |
| 7821-30-1500 | YN20S00002F4 | 165-9569 |
| 7822-30-1200 | YN20S00002F5 | 206-3305 |
| 7823-30-1400 | LQ50S00001P1 | 134-0649 |
| 7826-30-1100 | LQ50S00001P2 | 144-6670 |
| 7827-30-1000 | 8-98074-566-0 | 152-8973 |
| 7828-30-0900 | 8-98074-567-0 | 171-2540 |
| 7829-30-0800 | 4812369 | 183-4216 |
| 20Y-43-41790 | 256-7891 | 191-6527 |
| 20Y-43-41800 | 300661-00004A | 212-7890 |
| 22U-06-22410 | 21Q6-20820 | 223-1456 |
| 22U-06-22430 | K1013849 | 234-9871 |
| 4705919 | 332/G0912 | 245-3690 |
| 4341545 | 60117463 | 4542152 |
| 4614910 | YQ05.251.049 | 4659775 |
| 4468335 | YN20S00003F1 | 4669841 |
| 4656205 | 7820-30-1700 | 4371651 |
| 4716708 | 4791230 | 4482963 |
| 1751ES-12A6UC4B3S1 | SA-4761-12 | 153-6409 |
| 708-2H-25240 | 256-7891 | 214-5427 |
| 714-23-15520 | 300661-00004A | 222-1399 |
| 203-60-56180 | 21Q6-20820 | 0419-9902 |
| 419-15-16910 | K1013849 | 0419-9903 |
| 714-11-16830 | 332/G0912 | 223-8181 |
| 206-60-51130 | 60117466 | 224-2092 |
| 568-15-17210 | YQ05.251.049 | 225-0300 |
| 561-15-47210 | YN20S00003F1 | 253-3809 |
| 225-4558 | 7820-30-1700 | 231-8194 |
| 264-3114 | 4791230 | 198-6528 |
| 241-7668 | 403-0363 | 328-4314 |
| 375-4414-02 | 485-5747 | 384-3892 |
| 485-9850-03 | 375-4414-02 | 485-5747 |
| 491-0908 | 485-9850-03 | 491-0908 |
| 553-5204 | 491-0908 | 553-5204 |
| 487-8455 | 553-5204 | 487-8455 |
| 702-21-07010 | 487-8455 | 568-15-17210 |
| 702-21-07311 | 702-21-07010 | 702-21-07311 |
| 702-21-07610 | 702-21-07311 | 702-21-07610 |
| 702-21-57400 | 702-21-07610 | 702-21-57400 |
| No. | Question | Standard Answer |
|---|---|---|
| Q1 | Which medium excavators adopt main control pilot solenoid valve 702-21-57400? | This square block pilot proportional solenoid is exclusively produced for PC200-7 and PC220-7 construction excavator main multi-way control valve pilot oil circuit. |
| Q2 | What core pilot pressure adjustment function does this valve provide? | It receives ECU electric signal to adjust output pilot oil pressure, control the stroke of main valve spool and realize stepless speed control of all working device actions. |
| Q3 | What abnormal operation phenomena will occur once this pilot solenoid fails? | Slow boom and bucket movement, insensitive operating handle, insufficient breakout force, unstable idle action and continuous rise of hydraulic oil temperature. |
| Q4 | Is complete disassembly of the main control valve needed during replacement? | No, this valve is externally mounted on the main valve block; only four fixing bolts and wiring plug need to be removed for direct replacement with low maintenance difficulty. |
| Q5 | What structural design ensures stable signal output under harsh construction environments? | Thickened braided oil-resistant wire plus fully sealed two-pin waterproof connector, integral anti-rust alloy valve block, effectively resist long-term dust, vibration and high temperature interference. |
| Q6 | How to quickly check whether the solenoid coil is damaged before installation? | Use a multimeter to measure coil resistance, the normal range is 13–15 ohms; infinite resistance means open circuit, resistance below 10 ohms indicates coil short circuit. |
Product Highlights
7022157400 Main Control Pilot Solenoid OE 702-21-57400 For PC200-7 PC220-7 It is the core proportional pressure regulating component of the whole machine hydraulic pilot system. It converts ECU current signals into stable adjustable pilot hydraulic pressure, steplessly controls the opening of main ...
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