When do you need flanges on both pulleys?
Alternatively, for short-span drives with two-pulleys, each of the pulleys can have a flange on one side. When the span (center distance between shafts) is eight times or more the diameter of the smaller pulley, both pulleys should have flanges.
Can a synchronous belt drive run without a flange?
In some cases, it is possible for synchronous belt drives to run properly without flanged pulleys. Considering the factors discussed above, large diameter pulleys can sometimes be used without flanges, as long as the flange face is sufficiently wider than the belt.
What does freewheeling mean on a car starter?
Freewheeling occurs when you crank the engine and simply hear a whining noise, without the engine cranking. When this occurs, it means the starter is not engaging with the flywheel. This is a worrying situation, which could result in having to replace the whole component.
Why do synchronous belts favor one side of the pulley?
However, even when tracking due to tensile cord orientation is minimized, synchronous belts may still “favor” one side of a pulley — typically the side that provides a shorter center distance, and therefore, a lower tension. Belt tracking can also be caused by varying loads, primarily due to distortion of the tensile cords.
What makes a crank pulley bolt come off?
As you begin putting torque on your ratchet/breaker bar on the crank pulley bolt, the screwdriver will follow the flywheel until it hits an obstruction (bellhousing or block). This stops the flywheel from turning, and thus, the crank. With a nice breaker bar, the crank pulley bolt should come off with ease.
What causes a starter rope to get jammed?
The pulley houses the pull rope and the recoil spring. The pull rope winds around the outside of the pulley. The wound recoil spring is mounted on the inside of the pulley. If the pulley is broken or cracked in any way, it can cause a malfunction, such as getting jammed up.
What happens when you pull the starter rope?
The starter turns the engine over in order to get it to run on its own. When you pull the rope, centrifugal force sends the pawls inside the starter outwards, which lock onto the flywheel and turn the engine over. The recoil spring then retracts the rope.
Is the starter bolt on my Ford F150 OEM?
Works as oem should on my 2004 ford f150 with the 5.4 3v. Very happy and a upgrade from the brass bolts that were with it. Also used as a replacement for the bolt attached to the ground wire at the bottom of the starter Bolts were not correct size.