Cub cooling fan assembly

I am reassembling a completely torn down and repainted Cub. Been into the service and parts manuals and cannot seem to come up with an answer to this one.

The fan spindle slides down into a fork cast into the block. A nut on the engine side of the fork tightens it in place and there is a place on the spindle on the other side of the fork by the generator pulley that is flattened on both sides so you can put a wrench on it to tighten the nut. There is a large flat washer. I have it on the nut side of the fork. Is that correct? The spindle is sliding into the fork too far with it on this way and I am wondering if the washer should be on the other side to prevent this? Don't want to take it apart again if I have it right. It is a bit of a trick working with two belts on four pulleys holding the fan and genny at the same time...alone. Appreciate any help!

The washer goes on the fan side and the nut fits into the slot. You turn the shaft to tighten it. This should put everything in line. I know what you mean by it being a ploblem as I just got through putting mine on wrong and having to redo it. Good luck

Now you've gone and got me curious.

I know it's a Cub so there are differences between them and the 113/123 motors on the A/B/C series. On them, the fan support is not a fork, but a channel, with a slot cut in the middle of it. The spindle moves up and down in the slot to get the tension right. The nut on the backside can be turned onto the spindle by hand to get it started, but eventually will bind on the sides of the channel, which is what you want, as that keeps the nut from turning while you turn the spindle down to tighten it into place. Awasher on the nut side wold just jam up the works. Is the Cub a similar setup? In any event, the washer serves as much as a spacer as anything and likely goes in front as lsarge escribes.

As far as tensioning, one wants to have one's belts in place, but it's sort of standard design that you ought to be able to start from the crank pulley and tension your belts one at at time, i.e., get the tension between the crank and fan pulleys right by tightening the fan spindle down where it needs to be. Once you've got that, then tension the generator belt by swinging it on its mounting bolts and tightening down the bolt that slides in the arm/brace. Just looking at the parts catalog, that would seem to do it, provided your belts are of the proper length. But I'm livin' and learnin' everyday, so if there's some difference, I'd be genuinely interested in hearin' about it. (Gotta get me wunna them Cubs one day . . .)

As far as needin' an octopus for an assistant, I've found elbows and prybars of sufficient length, and sometimes a block of wood to hold the prybar in the right place so as to free up both hands for wrenches, to be just the ticket.

Don't know if I've just helped or hindered here.

Thank you very much! But...Grrrrr....this was a real pain to put together and I wish I had taken better notes/pictures on the disassembly part! Well back at it this afternoon.

A help as always! You have it basically right, I would have to go out and look at the AV or B to tell what exactly the differences are but on the Cub the fork I am describing are two fairly fragile pieces of cast that form a slot for the spindle. You can get a Cub if you like them but be warned your wallet will get thinner while you feel that your fingers have gotten fat and useless. Fussy little buggers. In many cases parts have to go on in certain order or no fit. Still plugging along!

(LATER) Had a chance to get outside and looked at the SAV and the B. These have a bracket with a slot that the spindle goes thru. The cub has a slot and it is part of the block unless my memory is faulty. The slot is open on top and I was warned that poor technique in the tightening would result in one of the "ears" breaking. FYI

For loosening and tightening the fan assembly, only one wrench is needed. 13/16" open end in FRONT of the support uprights. The big nut on the back will not turn if properly positioned in the slot.

Guess that would have been my first clue. But hey, it was 10 PM, 20 degrees, and I wasn't about to try it the with the washer reversed. Back at it now.