| OEM Part Number | 186-1525 / 1861525 |
| COGENG SKU | CG-SV-186-1525-RP |
| Brand | COGENG (Direct OEM Replacement) |
| Connector Type | Round Plug (Verify before ordering) |
| Valve Type | Transmission / Hydraulic Control Solenoid |
| Compatible Models | CAT 12H, 120H, 135H, 140H, 143H, 160H Motor Graders |
| Common Application | Powershift Transmission / Pilot Hydraulic Circuit |
| Key Feature | Round plug connector - confirm your machine's connector type |
| NO | Number | Name | Qty |
| Grp | 186-1525 | VALVE GP-SOLENOID | |
| 1 | 234-6666 | CARTRIDGE AS-VALVE | 1 |
| 2 | 104-3947 | LOCKNUT(5/8-11-THD) | 1 |
| 3 | 245-7464 | COIL AS | 1 |
| 1S-9593 | STRAP-CABLE | 2 | |
| 7N-9737 | HOUSING-RECEPTACLE(14-GA TO 18-GA) | 1 | |
| 7N-7779 | SOCKET-CONNECTOR (14-GA TO 18-GA) | 1 | |
| 7N-7780 | PIN-CONNECTOR (14-GA TO 18-GA) | 1 | |
| 7T-4515 | AVAILABLE REPAIR KIT(S): KIT-SEAL(INCLUDES 3 SEAL-O-RINGS) |
1 |
Q: How do I know if my CAT grader needs the round plug or square plug solenoid?
A: The 186-1525 solenoid features a round electrical connector. Before ordering, visually inspect your existing solenoid's connector. CAT H-Series graders may use either round or square plugs depending on production year and specific option codes. Installing the wrong connector type will prevent electrical connection.
Q: What are symptoms of a failing 186-1525 solenoid on a CAT 140H grader?
A: Common signs include harsh or delayed transmission shifting, specific gears failing to engage, the machine defaulting to neutral, or erratic blade response. This solenoid controls pilot pressure critical for transmission clutch engagement and hydraulic valve function.
Q: Does the 186-1525 fit all H-Series CAT motor graders?
A: Yes, the 186-1525 round plug solenoid valve is a direct fit for CAT 12H, 120H, 135H, 140H, 143H, and 160H motor graders, provided your machine uses the round plug connector configuration. Verify the part number stamped on your original valve to confirm exact fitment.
