Usually because the belt loosened, or the pulley is mis-aligned.
we know motor rpm, gearbox ratio, gear spoket no of teeth, conveyor pully spoket no of teeth and conveyor pully O.D. Exm- we have a motor of 1500 rpm, gearbox ratio 30:1, gear spoket no of teeth 24, conveyor spoket no of teeth 48, and conveyor pully (head pully) od is 200 mm, Solu- motor speed- 1500 rpm gear output - 1500/30 = 50 rpm conveyor pully rpm - 24*50/48 = 25 rpm conveyor pully cercumfrance - 200*3.14 = 628 mm or 0.628 meter conveyor speed - 25*0.628 = 15.700 meter per menuts
no. the size of a pully makes little difference to its action on a rope as the only thing changing is how much of the rope is in contact with the pully and since the pully rotates it makes it no easier or harder to pull the rope.
a pully
The watch has pulleys and gears.
a pully ,whell and axle,lever, wege thees
look at your belts. the pully between your motor and the altenator. This is your water pump pully. The back end of the unit should be attached to your motor block.
It is on the front of the motor, it will be the bottom most pully.
we know motor rpm, gearbox ratio, gear spoket no of teeth, conveyor pully spoket no of teeth and conveyor pully O.D. Exm- we have a motor of 1500 rpm, gearbox ratio 30:1, gear spoket no of teeth 24, conveyor spoket no of teeth 48, and conveyor pully (head pully) od is 200 mm, Solu- motor speed- 1500 rpm gear output - 1500/30 = 50 rpm conveyor pully rpm - 24*50/48 = 25 rpm conveyor pully cercumfrance - 200*3.14 = 628 mm or 0.628 meter conveyor speed - 25*0.628 = 15.700 meter per menuts
The timing belt has failed.
Under hood pasanger side losen three bolts in motor mount about 3/4 in,may pry down with flat screwdriver. This will drop motor. Remove belt and pump bolts and pully bolts push pully back. Now pully will fall in hand. P s drain fluid first.
behind the crankshaft pully at the bottom of the motor and on the back of the block
pull the tencion pully all the way back and then place it on.
If your refuring to the harmonic balancer use a good steering wheel puller!!!!
goes behind the harmonic balance pully on the front bottom of the motor
No. Inside the drivers side door jam, and on the motor.
I have a knocking noise near the water pump pully or idler arm pully on my 94 chevy cavalier 2.2 motor when its at idle, if i give it more gas the noise will go away do you know what this could be? i took off the tension idle pully and checked the bearing and it was fine.
It's on the passanger's side of the 3.8 engine, the biggest pully (crankshaft pully) on the towards the bottom, behind the tire. You'll have to take off the tire to get to the crankshaft pully, and you'll need a 15/16 and possibly a "pully puller", I'm working on the same problem right now and the pully puller sucks so I'm trying to find another way to get the crankshaft pully off. ======================================== My edit: On a 3.1 it is in the rear of the motor. (see how to change spark plugs on 92 olds cutlass supreme) to lean how to rotate engine forward to gain access. My local GM dealer to me it was at the crankshaft pully, an hour later, it was not there! Went to the library and looked it up in a Chilton... yes it is in the rear of the motor! And yes, they (the old CKP sensor) often test good, within spec but are actually bad! I know from experience!