| NO | Number | Name | Qty |
| Grp | 308-2638 | MANIFOLD GP-CONTROL | |
| 1 | 1P-1429 | PLUG-SEAL | 3 |
| 2 | 6E-5066 | SCREEN (HYDRAULIC) | 1 |
| 3 | 174-4913 | VALVE GP-SOLENOID (24-VOLT) | 1 |
| 164-2108 | WASHER (13.03X25.4X2.38-MM THK) | 1 | |
| 218-2373 | NUT (1/2-28-THD) | 1 | |
| 323-9531 | NUT (1/2-28-THD) | 1 | |
| 108-2148 | AVAILABLE REPAIR KIT(S):KIT-SEAL (SOLENOID VALVE) (INCLUDES SEALS) | 1 |
System Depressurization: Before disassembly, slowly loosen the hydraulic tank cap to release any residual pressure. Operate the control lever for the circuit you are working on to relieve any trapped pressure in the lines.
Battery Disconnection: Disconnect the negative battery terminal to prevent any electrical shorts or accidental activation.
Cleanliness is Critical: The hydraulic system is highly sensitive to contamination. Thoroughly clean the area around the existing solenoid valve before removal. Use plug kits or clean caps to seal any open ports and hoses immediately after disconnection.
Electrical Connection: Note the wiring orientation before disconnecting the old valve. When connecting the new COGENG solenoid, ensure the connector is fully seated and the locking clip (if present) is securely engaged.
Torque Specifications: When installing the new valve, use a torque wrench to tighten the mounting bolts to the manufacturer's specified values. Overtightening can damage the valve body or housing, while undertightening can cause leaks.
System Check: After installation, reconnect the battery. Start the engine and run it at low idle. Check for any hydraulic leaks around the new solenoid. Cycle the function controlled by the solenoid several times to purge air from the system.
Final Operational Test: Perform a full operational test of the machine's functions to ensure the new solenoid is working correctly and the previous issue has been resolved
Q: What are symptoms of a failing 174-4913 solenoid on a CAT 966G II?
A: Common signs include harsh or delayed transmission shifting, specific gears failing to engage, the machine defaulting to neutral, or sluggish hydraulic response. This solenoid controls pilot pressure critical for transmission clutch engagement and hydraulic valve function.
Q: Does the 174-4913 fit both G II and H series CAT loaders?
A: Yes, this solenoid valve is a direct replacement for CAT 950G, 962G, 966G II, 972G II, and 980H wheel loaders. It is a common component shared across these large loader platforms. Verify the part number stamped on your original valve before ordering.
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