replacing fan belt on 450 Case Crawler Loader

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replacing fan belt on 450 Case Crawler Loader

Jim Berry	The fan belt broke and needs replaced. I need to get my new fan belt underneath the bottom pulley, trying to take the hydralic pump loose but it won't come loose. Don't know if the splines are just rusted or if there is some sort of keeper on there. Can anyone give me any advice on figuring this out??
AJ	There are four bolts holding the coupling to the pulley,undo the four bolts and push the coupling towards the pump,it should slid back enough to get the belt to go between the coupling and pulley.if its frozen to the spline you will have to loosen the pump mounting bolts and maybe the pipes as well and move the lot back enough to get the belt in. AJ
Jim Berry	Thanks for the advice. I will give it a try over the weekend. Just out of curiosity how does the hydraulic pump come off took the two bolts and undone the hoses should it just slide apart on those splines or is there something else holding it? Would appreciate a little more help.
AJ	It should, the spline must be frozen to the coupling,loosen the four bolts on the coupling,I think it moves back enough to get the belt in. AJ
Jim Berry	Hey AJ tried taking those four bolts out first off couldn't keep pulley from spinning finally got a screwdriver wedged in there but now cannot get the bolts loose did not know if possibly reverse threads or just froze up like the pump splines if not froze wondered if could apply heat in that area or if you thought would be a fire waiting to happen. If you could maybe give me a little more insight I would greatly appreciate it. I have worked on plenty of other things on this machine but nothing has given me fits like this.
AJ	The threads are standard,counterclock to loosen,not a place where it would be easy to heat and you don't want to heat the front seal,I would try a good fitting socket and try to undo the bolts. AJ

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