Freightliner Fan Clutch Operation

The fan clutch is a thermostatic device which means it operates based off temperature and is usually mounted on the water pump or another belt driven pulley. Remove and plug airlines at the fan clutch input. The fan clutch allows the fan to operate at lower speeds and effectively detach at higher speeds when the vehicle is moving and air movement due to velocity aids to cool the engine.

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Sustaining fan blade engagement requires a large amount of torque.

Freightliner fan clutch operation.

Bad fan solenoid valve radiator fan stays on. With over 5 000 inch pounds of torque our fan clutch will handle nearly all fan blades. Loosen fan belts rotate the pulley and feel for smooth rotation of bearings. Operation or maintenance information which is important but not hazard related.

Repeat this procedure on the front section of the fan clutch. With the engine temperature below the thermal switch setting turn on the ignition and build up air pressure. 34 klondike kysor style fan clutch. Freightliner navistar.

Highest torque rating. Fan blades in operation today that require more torque than current fan clutches can produce. This will engage the fan clutch. 1 remove the air line and plug the hole in the shroud 2 remove the fan clutch and drive hub from the truck 3 place the original horton fan inside the shroud while you install the fan drive or replace it with a new horton 995711503 a.

Rebuild kits remans 2 speed viscous fans. At idle and low engine speeds this fan clutch is fully engaged gradually disengaging as engine speed increases. The fan clutch will spin loosely until the temperature reaches a certain level at which point the fan clutch will fully engage so that the fan can work at maximum efficiency. Fleetrite fan clutches.

Hub bearing kit instructions tools required foot pound or newton meter torque wrench 3 8 drive flex head ratchet 3 8 drive 5 16 hex bit socket 1 5 8 socket loctite 271 note protect the radiator from possible damage from the fan during fan removal and fan and clutch. Disconnect one terminal of the n c. Both types operate on the fluid drive principle. Depending on the application it may freewheel above 2 500 to 3 000 rpm.

There are two types of fan clutches thermal and non thermal fan clutches also called centrifugal clutches. A centrifugal valve opens to allow the flow of heavy silicone fluid locking the fan blades to the pulley. A torque limiting fan clutch reacts to engine speed. Routine inspection of the horton fan clutch should be carried out at 200 000km intervals.