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A common cause of belt breakage is excessive grass clippings on the deck. Grass clippings can work their way under pulleys and deck covers, causing series problems. Make sure to clean off your deck after every mower use and follow manufacturer recommendations.
How long should a mower deck belt last?
Good mower belts should last for about 3- 4 years. If you don’t have a quality mower belt, you need to get one to use it for this long. As you use a mower belt, you should also inspect it from time to time to confirm any signs of tear.
Why does my John Deere deck belt keep breaking?
the most common cause of the deck belt breaking would be a idler or mandrel pulley not lined up properly or the bearings going out and making the pulley wobble or the belt is getting rubbed somewhere. check the pullies on the deck to make sure they turn freely and are not loose and wobbling around.
Why do drive belts break?
Serpentine belts can fail in a few different ways. This is usually the result of a belt in poor condition, or a problem with one of the accessory components being driven by the belt. A failed bearing in a pulley being driven by the serpentine belt will also cause the belt to break.
How do I know if my mower deck belt is bad?
How to tell if a mower belt needs replacement The belt has side wall damage. Mower belt edges should be smooth and even throughout the entire length of the belt. The belt has a glazed or burned sidewall. Look at the belt edge that contacts the pulleys. The belt is cracked.
Can a mower deck belt stretch?
Yes, lawnmower belts can stretch. Continuous wear due to regular operation can cause them to elongate over time. When it stretches more than it should, it can result in the drive belts lose grip on the pulley system. Take note that some mowers rely on pulley systems to cut grass.
Why is my deck belt smoking?
If the belt is actually smoking then something is causing it to slip or rubbing on it. Wear on the outer flat side of the belt indicates a problem with an idler pulley. More wear on one edge of the V-side than on the other indicated a drive pulley that is out of position and forcing the belt out of line.
Can you fix a broken mower belt?
We can repair broken lawn mower belts faster than if you took your mower into a regular repair shop! There are many things you can do to ensure that your lawn mower is running properly. Replacing belts on your lawn mower will keep your lawn mower drive system operating at optimal speed.
How do you tension a belt?
Whack the belt with a karate chop, and if it feels firm, the drive is properly tensioned.” “Press the belt with your thumb until it deflects about 1/2 in.” “Tension the drive until you get a slight bow in the slack side when it is running.”Mar 1, 1999.
How do I know if my drive belt needs to be replaced?
Common Signs of Drive Belt Replacement Strange Noises. One of the biggest signs that you probably need to take your vehicle to the dealership for a check is when you start hearing strange noises coming from your engine. Visual Signs of Wear. Mileage Indicators. Breakage is Bad.
How often should drive belts be replaced?
It is often beneficial to change the drive belts in your car approximately every 60,000 to 100,000 miles. By undergoing annual car inspections, you can have your drive belts evaluated. If any signs of damage or severe wear and tear are identified, the belts can be replaced.
What happens if belt breaks while driving?
When the timing belt breaks, the crankshaft will continue to spin at 1000 rotations per minute, while the camshaft will stop turning. As a result, the pistons will continue to rise and fall in their cylinders, but they will strike closed valves.
What causes a mower deck to vibrate?
Deck vibration can be caused by an unbalanced blade, worn pulley or mandrel, bad blade belt or debris caught inside a pulley. Loose nuts or bolts on the pulleys, mandrels or blades can also cause vibration. Remove the mower deck and re-tighten all fasteners. Check for wear on pulleys, mandrels and blades.
Why does my belt keep breaking on my Cub Cadet?
Debris in Grooves of Your Cub Cadet Pulleys Your pulleys can collect debris, like stones and wood chips, that may get caught in the grooves or under the pulley. Something as simple as packed mud around your pulley can cause your belt to come off your Cub Cadet, or worse yet, the belt can break.
How do you stretch a deck belt?
How to Stretch a V-Belt Power down the system you’re working with. Remove any part of the system that is blocking you from accessing the V-belt. Slip your fingers or another object on the underside of the belt. Pull the stretched belt away from the system to remove it. Stretch out the new V-belt with your hands.
How much will a drive belt stretch?
Stretch belts can last 100,000 miles or more, but this can vary dramatically depending on the vehicle’s environment and where it’s mounted. This is why inspection is recommended – you cannot simply go by mileage recommendations.
What causes mower deck belt to twist?
Check pulleys for wear and worn out bearings. When a pulley doesn’t spin freely, friction is created between the pulley and belt, causing the belt to break.
How do you adjust a John Deere drive belt?
Loosen the center bolt on the transmission drive belt idler arm, but do not remove it. Holding the top of the center bolt-head with the combination wrench while loosening the retaining nut on the underside with a socket wrench is the next task. Push the idler arm forward to align the adjustment bolt holes.