By main pulley do you mean crankshaft pulley. There is a tool you can checkout from the Auto Zone and although it's free you'll have to leave a deposit which you'll get back upon it's return. Call them ahead of time to get loan instructions.
It is on the front of the crank shaft. It seals the oil at the crank pulley.
There is one on each end of the crankshaft. The front main seal is at the pulley and, while the rear main is at the transmission end.
The front main is behind the crank pulley. The rear main is behind the flexplate/flywheel. The trans has to be removed to access this one.
The 1995 Toyota Camry four cylinder engine timing marks can be found on the main pulley. The timing marks will be scattered around the outside of the pulley.
Timing marks are used to set the ignition, so that the spark plugs spark when the pistons are at the right position and moving in the right direction. The timing marks for your 1995 VW can be found on the front of the main pulley. The timing marks will be scattered around the outside of the main pulley.
Sounds like water pump needs replacing The main pulley is near the top of the engine. The water pump is toward the front of the engine. It is possible that water appears to be leaking from this pulley, but there is a manifold gasket right above it. Double check to find exactly where the water is exiting the engine block. My first hunch is a leaking gasket.
V8 , no. Diesel, yes.
The timing marks are marks on the front main pulley. The marks indicate when a certain piston is at the top of its stroke. You can turn the pulley to a certain position, aligned with the timing marks, and no that piston is at the right position to set the timing.
The Watter pump is behind the main pulley that the cooling fan is attach to. take the top of the calling off and then take the fan off then the pulley. The water pump is right there. It takes 5 bolts. about a 2 hour job.
The main pulley on which the serpentine belt goes on in a 1997 Chevy Lumina LTZ is the crankshaft pulley. The crankshaft pulley plays a role in the wheels turning and powering the alternator and power steering pump.
The 1999 Toyota Tercel timing marks can be found on the main pulley. The timing marks will be scattered around the outside of the main pulley.
If the thing with the hole in it has a pulley that the main belt is turning, than it is the water pump. And, if there is water coming out of the water pump, than the water pump is going bad and must be replaced.