best way ,get a manual. remove fan ,fan cowling, drain water, remove 4 bolts holding pump on engine, remove heater hoses first. be careful of not hitting radiator. have fun..
you have a short somewhere. charge battery. make sure every thing is turnen off. connect a voltmeter from neg.pole to ground wire. if you get a reading you something drawing voltage draining the battery. start disconnecting wire untilthe voltage drops to zero. good l;uck..
if the boots are busted ,replace them. there are replacement boots you can put on without having to pull the axles. check with your local parts store. they are fairly easy to put on. just follow the instructions.