Once viscous fluid is in the working chamber, shearing of the fluid results in fan rotation. PDF IK0900075 - Horton Stratis Fan Hub Diagnostics Page 1 of 6 6% I just checked, and yes the speed increase and decrease with rpm. A cooling fan clutch is expected to fail over time. Like all viscous fan clutches it may be turning, but is it working correctly? Short of a relay sticking, I see no possible cause that it would be electrical. I agree, a T444E will get hot easily unless cooled well, so the fan clutch is critical. We use cookies and similar web technologies to recognize your repeat website visits and preferences and to analyze traffic. Normally it's caused by faulty clutch fan, Possible Cause: Clutch fan wire got cut/pulled by foreign factors. Technical Services (UK) Ltd trading as Viscofans. Get Started > Always in stock - GENERAL GEORGE S. PATTON. Solenoid coil / Actuator check - Try rotating solenoid coil / actuator and see if it's stuck, 5. 0000060846 00000 n Hope you don't mind me referencing your video? % of people told us that this article helped them. Viscous drives tend to have the first two issues. Its important to maintain the fan clutch in your vehicle, as its responsible for testing the temperature of the air coming through the radiator and preventing the engine from overheating. You can also perform this test while the vehicle is parked and in neutral gear. Most fan clutches on newer vehicles are designed with a metal spring coil that reacts to changes in temperature and engages or disengages the fan accordingly. When I say it disengages, I mean it coasts to a stop! Were kidding of course. The fan clutch is integral to the safe and efficient operation of your commercial vehicle or application engine. I had a broken wire inside the loom when my fan thought it was a Jet fighter: I thought the way to test it was to short it so the clutch engaged? Viscous Fan Clutch Not Working and Troubleshoot Guide Then test the fan clutch by giving it a good push. Clutch slipping and eventual failure are normal with time. How Does a Viscous Fan Clutch Work? - YouTube endstream endobj 43 0 obj <> endobj 44 0 obj <>/Font<>>>/Fields 35 0 R>> endobj 45 0 obj <>/Font<>/ProcSet[/PDF/Text/ImageC]/XObject<>>>/Rotate 0/Type/Page>> endobj 46 0 obj <>/Border[0 0 0]/H/P/Rect[54 2.64001 576 14.64]/Subtype/Link/Type/Annot>> endobj 47 0 obj <> endobj 48 0 obj <> endobj 49 0 obj <>stream EC450TM Fan Clutch NOTE Do not loosen the P-clamp attaching the wiring harness to the metal tab on the Fan Clutch. Thank you! 3000000/10000 Bad Fan Clutch Symptoms - In The Garage with CarParts.com It may be a good idea to check the temperature of a few different vents. Engine fan check - See if any damages on fan 2. this will apply to T1N sprinters as well as NCV3 equipped with a. 0000070141 00000 n 0000001421 00000 n One (of many) of my top things to do is service the Transmission. 0000060378 00000 n The sensor returns a signal pulse through the cooling fan speed signal circuit. When the fan clutch engages, it spins up greatly, increasing air flow through the radiator and over the engine. The fan clutch unit is approximately 1 foot tall by 1 foot wide. I replaced it earlier this year while chasing an overheating condition (along with the Water Pump and Thermostat). If the fan clutch requires repair, take the vehicle to a qualified mechanic. Some viscous properties of the fan hub may vary the res 0000060428 00000 n It should turn smoothly with some drag. Check the gauge for proper operation (especially electric gauges). Squeaks while doing it too. Could not find any bad wires, just looseness in the actual pins inside the connector. It may work at 100% but maybe not at 20-30%. Fan Clutch. Include your email address to get a message when this question is answered. Our community has been around for many years and pride ourselves on offering unbiased, critical discussion among people of all different backgrounds. Fan clutch ticking | Ford Explorer - Ford Ranger Forums - Serious The PCM never puts it to 100%, 90% is the highest and that's at very high engine temps. {"smallUrl":"https:\/\/www.wikihow.com\/images\/thumb\/4\/42\/Test-a-Fan-Clutch-Step-1.jpg\/v4-460px-Test-a-Fan-Clutch-Step-1.jpg","bigUrl":"\/images\/thumb\/4\/42\/Test-a-Fan-Clutch-Step-1.jpg\/aid9382520-v4-728px-Test-a-Fan-Clutch-Step-1.jpg","smallWidth":460,"smallHeight":345,"bigWidth":728,"bigHeight":546,"licensing":"