How do u take off the pully below the fan with out the motor turning over because we was changing my head gasket and the timing chain came outta place on the bottom sprocket and know we have to take the whole front of the motor apart but all that pully wants to do is turn and we dont know how to get a good grip on it and break the bolt loose can anybody help me?
1983 Nissan 720 engine 2.4How do you take off the pulley below the fan? mechanics help?Rapid Fire is correct about needing the puller (harmonic balancer/steering wheel puller) later, but seems to have missed the fact that you're still trying to get the bolt loose, which must be done first. The easiest way to do this is to take off any access cover you need to, and jam a screwdriver into the teeth of the flywheel/torque converter flex plate (where the starter engages) Wedge it in such a way that the engines crankshaft (the part the pulley is on in front), won't turn counterclockwise while turning the bolt in the middle of the pulley, until it comes loose.
One other thought though. Are you sure you need to take that stuff apart? Assuming you lined it up with top dead center before you started, I'd think you could just re-hook the chain, and proceed as before. Of course, if you have rotated the crankshaft in the meantime, trying to get the bolt off, it may be necessary now. Or maybe you could line up the timing marks again? I mean, the chain doesn't really care which teeth it's on. It's the relation between the gears that matters.
Sometimes, when faced with a situation like this, the best thing you can do is take a step back, take a deep breath, and take a few minutes to think about the alternatives.How do you take off the pulley below the fan? mechanics help?You need to use a gear puller to get the pulley off. Most parts stores will lend or rent you one. When the pulley comes off you will notice a keyway cut into the shaft - Do not lose the little metall woodruff key that comes out with the pulley.