a) After several months, rain is once again falling here on California's Central Coast.
b) Suddenly I seem compelled to make my first post on MTF.
Hey, it's probably just one of those 'strange coincidence' things, right?
Anyway, some while back, I acquired my first "fixer" and promptly dove in to the deep end of the MTF pool in my quest for total lawn tractor enlightenment
. Wow! What an amazing storehouse of knowlege and experience. Thank-you, thank-you! Found lots of great info; made some significant repairs; and even stared down perhaps the most terrifying thing ever to haunt MTF - yes I'm talking about that icon of pure villainy and voodoo... the Variator.
On the brighter side, I also made a new "best friend" down the street - a very friendly, retired gentleman who has four
different welders in his shop, knows how to use them all, and enjoys helping people out with a project now and then. (seriously, how perfect is that!)
Well then the first part of that 'coincidence thing' occurred, and I suddenly felt "inspired" to finish rebuilding and installing the deck. That's where I ran into a little glitch. Fortunately for me, even with the massive sleep deprivation caused by spending waaay too much time on the forum, I still managed to remember MTF's MOST important lesson on problem solving:
You Want Pictures! :sidelaugh
So, in a blatant and slavish attempt to curry favor and get responses to my questions, here are some pics.
(with my questions accompanying the last image.)
First two are just after getting 'it' home - an MTD 600 series w/ B&S 12hp IC. Needed battery and ignition work at minimum. Not too bad from a rust standpoint, compared to places where you guys have *real* weather. Had been stored in a garage for the past 4 years or so as well. (clearly not very well maintained before that though.)
Dump Cart. Also got a complete Grass Collector attachment. (no pic for that)
Here's a shot after some minor disassembly and a lot of pressure washing.
begin next phase of disassembly and cleaning
example of "not well maintained" (before and after)
Ok, on to my fit questions. The spindles and bearings on the deck were pretty far gone, so I went with the low-cost replacements from mowtownusa after noting favorable reviews. (we get virtually no rain for more than half the year, so use will be fairly light.) Using the "Deck G for 600 Series Lawn Tractors" manual, I ordered replacements for spindle assembly - part# 717-0906.
Here's a model I made to show the (blade)spindle (with pulley) design used on my deck.
The replacement spindles seemed to be identical to the originals when I compared them, so I figured I was good to go. Well, after resuming work on the deck last week, the spindle plates fit the deck perfectly and the blades installed with no problem - I had to buy one new coupler, and both the old and new coupler made a nice snug fit - tapped on with small hammer and wood block (blade side) - on the new spindles. So far, so good. (blade end not shown in the model)
The pulley side however, is a different story. Both pulleys seem to fit a bit loose where the toothed(?) sections of pulley and spindle interlock - they definitely interlock, but the fit is certainly not snug. But worse than that is that the pulley sleeves bottom out against the spindle bearing before the shoulder sections of shaft and sleeve make contact. Which means if I tighten down the pulley, it binds against the bearing. After doing some measuring, it seems like the mismatch is only about 0.1" or so, but more than enough to be a problem. (Unfortunately, I tossed the old spindles a while back, so I can't do any precise measurement and fit comparisons at this point. Doh! :00000061
a) do pulleys typically fit a bit looser than blade couplers, but are fine once they're tightened down? (assuming they're not pressing on the bearing.) I presume they would be well aligned with the spindle shaft once the internal shoulder is firmly seated on the shaft.
b) if yes for 'a', can I just grind an 1/8" off of each sleeve and install the pulleys? (balance shouldn't be a concern with such a small diameter involved.)
I'm assuming that with two bearings pressed on those spindle shafts, that moving each of them 'just a bit' isn't happening without a serious press and other jigs to do it properly. There *is* about 3/16 of shaft length exposed on the blade side, if it could be done.
c) pulleys should fit snug, just like the blade couplers; order new ones from same source with expectation that they should fit properly or allow a return.
- or -
d) Newbie Alert! 'Your view of the forest is blocked by the trees, Grasshopper.'