Turn the adjustment bolt on the side, top or bottom of the pulley counterclockwise with the ratchet and socket until the accessory belt is loose enough to remove. Tighten the tensioner pulley by turning the adjustment bolt clockwise with the ratchet and socket until the belt is tight .
How do you tighten a tensioner pulley?
Turn the adjustment bolt on the side, top or bottom of the pulley counterclockwise with the ratchet and socket until the accessory belt
Are pulleys supposed to be loose?
A loose pulley can also mean its bearings are bad. If the pulley is excessively loose and there is a lot of play after wiggling it back and forth, it needs to be replaced. A normal pulley in good condition will only move slightly .
What happens if tensioner pulley is loose?
If the tensioner is loose the belts may squeak or squeal , especially when the engine is first started. It is also possible for the tensioner pulley or bearing to wear out, in which case the vehicle will produce a grinding noise from the pulley.
How do you adjust a pulley?
- First remove the fan “V” belt (see How to Replace a Belt).
- Then loosen the allen screw at the hub of the pulley and remove the key.
- Rotate the top of the pulley clockwise to close the belt groove 1⁄2 turn, 1 turn, 1-1/2 turn or 2 turns as required to obtain the desired adjustment.
What does a loose pulley sound like?
Squealing . When the engine is idling, a bad pulley may make a squealing sound. This is due to the bearings in the pulley going bad. The bearings may also make various other sounds such as clattering or even a rumbling sound, making the vehicle sound as if there was much more wrong than a bad pulley.
Can you over tighten a pulley?
A belt shouldn’t be over-tightened . Any bearing that the belt rotates on can be burned out by an over-tightened belt. A pulley bearing can be ruined by an over-tightened timing belt.
Can you drive with a bad tensioner pulley?
Driving with a bad belt tensioner is unsafe since the tensioner is meant to guarantee ample tension that powers accessories. Wear on the belt tensioner will eventually cause the belt to slip, generate loud noise, and also create an unsafe level of heat along the accessory pulleys.
What are the symptoms of a bad tensioner pulley?
- Rust bleed and cracks. Appearance: Rust is bleeding between arm and base or dripping from the tensioner. ...
- Pulley bearing wear. ...
- Pulley wear. ...
- Tensioner assembly misalignment. ...
- Tensioner noise. ...
- Tensioner arm misalignment. ...
- Excessive tensioner arm oscillation. ...
- Binding or grinding tensioner arm movement.
What does a bad belt tensioner look like?
The most common symptom of a bad or failing drive belt tensioner is noise from the belts or tensioner. If the tensioner is loose the belts may squeak or squeal, especially when the engine is first started.
How do you calculate the RPM of a pulley system?
How to Calculate Motor RPM. To calculate RPM for an AC induction motor, you multiply the frequency in Hertz (Hz) by 60 — for the number of seconds in a minute — by two for the negative and positive pulses in a cycle. You then divide by the number of poles the motor has: (Hz x 60 x 2) / number of poles = no-load RPM.
How do you adjust a fan belt tension?
The required measure of tension in the serpentine belt is that it should not deflect more than 1⁄2 inch when twisted either way from the middle . If twisted more, the belt is loose, and if twisted less, the belt is too tight.
Does a smaller drive pulley increase speed?
If a smaller pulley turns a larger one, the larger one will turn slower, but with more power available at the shaft. If a bigger pulley turns a smaller one, the smaller one will turn much faster than the bigger one but with less power available at the shaft.
Why is my crankshaft pulley wobbling?
If the fan-belt pulleys that bolt to the harmonic balancer are dismounted, bent, or distorted , it may cause the crankshaft pulley to wobble. ... Sometimes, some dirt may get trapped under the pulley. Furthermore, the crankshaft pulley tends to wobble if it isn’t appropriately torqued.
How much does it cost to fix a tensioner pulley?
It will cost between $125 and $380 to have your pulley replaced. The labor should cost between $45 and $155 and the parts should cost between $85 and $225.
How do you check a pulley?
- Squealing. When the engine is idling, a bad pulley may make a squealing sound. ...
- Frozen. The bearings in a pulley may cause the pulley to freeze or in some cases hard to spin. ...
- Belt Travel. ...
- Pulley Mounting.
