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thetool
Well-known member
- Joined
- Mar 22, 2008
- Messages
- 516
I believe you do have to remove the tank.
You have to loosen and tip, if not fullly remove, the entire blower housing. There are four long 3/8" bolts that go through long spacers, they bolt almost straight up.
This releases the plate with the gearbox and fan. The fan is on a tapered, keyed shaft with a nut on top. If your build was kind, there are two 1/4" threaded holes in the fan hub and you can use a steering wheel puller to remove the fan. If you don't have the holes, I used two equal size tapered slipper bars, one on each side, driven in sideways between the hub and plate, and alternately tapped with a hammer until the fan popped off. Sometimes it broke, but the replacement fan has the holes for a puller.
Then the gearbox is unbolted from the plate. The cheesey stamped pulley is easy to damage so be careful when removing that. That's a straight keyed shaft with socket setscrews, but it likes to sieze on the shaft.
Reverse for install, but the long bolts with spacers are a special treat---two spacers go inside the housing. There are pockets for them--it should go well if your blower housing is not all distorted from heat, and sometimes the holes are hard to find--sounds like my life=).
Good luck with this.
man on man, you were not kidding, these spacers are gonna be a pain in the A%&. i got it out with just unbolting the tank and moving it foward a bit, but it may be easier to take it all the way off to get this thing back in. Didnt get a chance to get the old fan off, hopefully i can finish everything up tommorow assuming i dont break the fan.....
My 751 manual advises you to use a small amount of silicone sealant on the spacers, this will assist in holding them in place whille you position it.
A few pointers which may help , behind and outside the cab are some plastic bumpers that the cab hits on when in the up position , take them off , it will make it easier to get the cab shocks on and off , drain the hydraulic tank , after you raise and block the boom by hooking an attachment hose with coupler to aux , hold the end of the hose in a five gallon can and pump the oil out the machine till air shows up in the flow and kill the engine , there are some installation keepers from the factory that maybe rusted away or not reinstalled if job wa done before , you could make something I am sure , they are thin flat washers that grab the threads of the bolts and hold it all together during installation , clean the exposed section of blower pulley shaft that extends out the pulley hub with emery paper before you try and get it off , if ou have a pressure washer while the blower housing is out is a good time to clean out the radiator , don't tighten up the set screw on the pulley till it is installed and alignment with the othr two pulleys can be seen , it don't always go back in the same spot for a couple or reasons , chck the oil after it is installed on machine -----------good luck
DARN!!!, i just finished, that info would have been great to have before i started lol. Thanks for all the tips and poiners guys. i think it would have been 5 times easier if i would have followed everything you said fishfiles. At any rate, its all in, so hopefully it will be running today or tommorow. This site is great, thanks again everyone
