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| Specification Category | Details |
|---|---|
| COGENG Part Number | PS-KOB-SET-027-028 |
| Replaces OEM Numbers | Kobelco YN52S00027P1 Kobelco YN52S00028P1 |
| Product Type | Hydraulic Pressure Sensor |
| Compatible Brands | Kobelco |
| Compatible Models | SK100L, SK200-2, SK230-8, SK120-5, SK200-5, SK200-6, SK200LC-5 (and other variants) |
| Electrical Connection | Standard OEM 2-pin or 3-pin connector |
| Body Material | High-Strength Steel/Stainless Steel |
| Seal Material | High-Grade Nitrile (NBR) or equivalent |
| Pressure Rating | Designed to meet OEM specifications for respective hydraulic circuits |
| Output Signal | Compatible with OEM controller (typically voltage or current) |
| Quality Standard | ISO 9001 |
| NO | Number | Name | Qty |
| 1-1 | ZD12P02400 | O-RING ID 23.70±0.24x0D 30mm | 1 |
| 2 | YN30H01010P | ELBOW | 1 |
| 3 | YN30H01005P1 | RIGID TUBE | 1 |
| 4 | YN30H01006P1 | RIGID TUBE | 1 |
| 5 | ZD11G07500 | 0-RING ID 74.40±0.65x0D 80mm | 1 |
| 6 | ZD12P02600 | O-RING ID 25.70±0.26x0D 32mm | 4 |
| 7 | YN30H01012P | HOSE [385] | 1 |
| 8 | ZC16X09100 | CLIP Clamp,Hose -Min 80xMax 101mm | 4 |
| 9 | ZE13X12000 | CLAMP Half --[Incls.Capscrew &Lockwasher | 4 |
| 10 | YN43H01097P | CLAMP Single…58x30x38mm (028mm) | 2 |
| 11 | LQ30H01006P | SUPPORT | 1 |
| 12 | ZW16H10000 | WASHER ID 11x0D 24xTh3.2mm | 4 |
| 13 | ZS28C12030 | CAP Screw-M12x1.75x30mm | 4 |
| 14 | ZS28C10080 | SCREWM10x1.50x80mm | 8 |
| 15 | ZS18C10065 | SCREW M10x1.50x65mm | 2 |
| 16 | ZS18C12025 | SCREWM12x1.75x25mm | 2 |
| 17 | ZN18C10008 | NUT M10x1.50mm | 2 |
| 18 | ZW16H12000 | WASHER ID 13xOD 26xTh 3.2mm | 2 |
| 19 | ZW26K12000 | LOCK WASHER ID 12xOD 17.8xTh 2.5mm | 4 |
| 20 | ZW26K10000 | WASHER Lock-ID 10x0D 15.7x Th 2.5mm | 8 |
| 21 | YN30H01008D1 | HOSE (850 | 1 |
| 22 | YN30H01008D2 | FLEXIBLE HOSE (900 | 1 |
| 23 | YN52S00027P1 | PRESSURE SWITCH PRESS | 2 |
| YN52S00028P1 | PRESSURE SWITCH PRESS | 2 | |
| 23-0 | Y52S00033F2 | SENSOR Kit Includes Ref 23-23-4 (Refer to SB S030-41-K003) | 1 |
| 23-1 | YN13E01610P1 | HARNESS [Added with new part #press switch] | 1 |
| 23-2 | ZD11P01400 | 0-RING ID 13.8±0.19x0D 18.6mm | 1 |
| 23-3 | LS30H01024P | HYD CONNECTOR [Added with new part #press switch] | 1 |
| 23-4 | YT42H01128P1 | ELBOW [Added with new part #press switch] | 1 |
| 24 | YN03H01169P | GROMMET | 1 |
| 25 | 2432Z290D6 | CLIP Wire Ties-292mm Long | 1 |
RELEASE HYDRAULIC PRESSURE: Completely lower all attachments to the ground. Turn the engine off and slowly operate all hydraulic control levers through their full range to release any trapped system pressure.
DISCONNECT BATTERY: ALWAYS disconnect the negative (-) battery terminal to prevent electrical shorts, shocks, or accidental activation during installation.
CLEANLINESS IS CRITICAL: Hydraulic systems are extremely sensitive to contamination. Thoroughly clean the area around the sensor ports before disassembly.
Preparation:
Park the excavator on a firm, level surface. Lower the boom and attachment fully and engage the safety lockout.
Gather clean tools, appropriate wrenches, and new seals or O-rings.
Removal of Old Pressure Sensors:
Take clear photographs of the sensor locations and wiring connections for reference.
Label the sensors and their respective ports (e.g., "P1" for YN52S00027P1, "P2" for YN52S00028P1).
Disconnect the electrical connectors from both sensors.
Using the correct size wrench, carefully loosen and remove the sensors. Be prepared for a small amount of hydraulic oil to escape.
Installation of New COGENG Sensors:
Compare the new COGENG PS-KOB-SET-027-028 sensors with the old ones to confirm identical configuration.
Install new seals or O-rings (if not pre-installed) lubricated with clean hydraulic oil.
Install the sensors into their correct ports based on your labels, tightening by hand first to avoid cross-threading.
Tighten the sensors to the proper torque specification using a wrench.
Reconnect the electrical connectors, ensuring they click securely into place.
Final Verification and Testing:
Before reconnecting the battery, perform a visual check to ensure all connections are secure and correct.
Reconnect the battery terminal.
Start the engine and let it idle. Immediately check for any hydraulic leaks around the new sensors.
Slowly operate all hydraulic functions through their full range. Monitor for smooth operation and check for any error codes on the monitor.
Check the hydraulic fluid level and top up if necessary.
