David414 289 #1 Posted February 7, 2021 I have a new to me, a 1991 312-h model 51-12KE01, that has 6" front wheels. The spindles need replacing. On Toro's parts list, front spindles have the following numbers for the RH as 113380 and 113379. The left side has 113382 and 113381. My 1989, 414-8, model 31-14K804 has the same part numbers for spindles but has 8" front wheels. The spindles are shorter, please see pictures. The 312-h axle hole for the spindle is very good, no play with a .750 rod inserted; all the wear is on the hub side of the spindles from bad bearings. What is the correct spindle part number for the 6" front wheels on the 312-h? What is the difference in the part numbers? Spindle length? What would happen to the 312-h if I use the 6" wheels with shorter spindles? Is this advisable? I would like to use the shorter spindles and upgrade the 6" wheels to 8". Are used 8" wheels available? My 414-8 came with a 37" SD deck, short spindles, 8" wheels, and the tires do not rub the deck. Thanks, David Share this post Link to post Share on other sites
oliver2-44 9,765 #2 Posted February 7, 2021 (edited) The 312 uses the shorter spindles when they have 8" tires on them. The shorter spindles keep the tractor level with the larger 8" tires. Edited February 7, 2021 by oliver2-44 Share this post Link to post Share on other sites
roadapples 6,983 #3 Posted February 7, 2021 Many here have upgraded to the 8" wheels and short spindles. Put a request in our want adds. Should be reasonably priced... Share this post Link to post Share on other sites
David414 289 #4 Posted February 7, 2021 Thanks, but what part numbers are the short spindles? Share this post Link to post Share on other sites
JCM 9,202 #5 Posted February 7, 2021 It appears by the picture the 113381 and 82 are the short ones and more $ than the longer ones Share this post Link to post Share on other sites
RandyLittrell 3,884 #6 Posted February 7, 2021 (edited) I have 16x6.50-8 tires and wheels on my 310 with the longer spindles. It not that big of difference because the 310 and 312 with 6" wheels use 15" tires, so have of that is only a 1/2". Just find some 16x6.50-8 tires and wheels and go for it. Call A-Z parts, he is a vendor on here and a good guy. He might have everything you need. Unless your spindles are really bad, just put new bearings in them and run em. Not really a big deal at the slow speeds they run at. Randy Edited February 7, 2021 by RandyLittrell 1 2 Share this post Link to post Share on other sites
ebinmaine 67,695 #7 Posted February 7, 2021 31 minutes ago, David414 said: Thanks, but what part numbers are the short spindles? Don't sweat the part numbers David. Spindles will fit over a VERY broad range and the part numbers may not all be the same. I'll second the CALL to A to Z tractor. He'll likely have all you need at great prices. Note I highlighted CALL. When I buy from him I ALWAYS call. He's pretty busy and often has things on hand that aren't listed on the website. 1 1 Share this post Link to post Share on other sites
tom2p 2,394 #8 Posted February 8, 2021 (edited) 4 hours ago, RandyLittrell said: I have 16x6.50-8 tires and wheels on my 310 with the longer spindles. It not that big of difference because the 310 and 312 with 6" wheels use 15" tires, so have of that is only a 1/2". Just find some 16x6.50-8 tires and wheels and go for it. Call A-Z parts, he is a vendor on here and a good guy. He might have everything you need. Unless your spindles are really bad, just put new bearings in them and run em. Not really a big deal at the slow speeds they run at. Randy agree I also have a 312-8 with 8" wheels and the longer spindles (pictured below) the tractor is lifted approx 1/2 inch in the front - and easy to lower the front of the deck if you desire Edited February 8, 2021 by tom2p 3 1 Share this post Link to post Share on other sites
"Manic-Mechanic" 1,194 #9 Posted February 8, 2021 (edited) I just did exactly that, shorter spindles with eight inch wheels. Yes, A-Z has some in stock. I changed mine because the originals were sloppy and twisted. Plus I run a Snowthrower and little 6” wheels wouldn’t do so well......There are some differences tho’, hold the front wheel with clips, cotter pins or bolts? Mine use the bolts. Many Thanks to Eric Edited February 8, 2021 by oldman Additional info 1 1 1 Share this post Link to post Share on other sites
ebinmaine 67,695 #10 Posted February 8, 2021 5 hours ago, oldman said: I just did exactly that, shorter spindles with eight inch wheels. Yes, A-Z has some in stock. I changed mine because the originals were sloppy and twisted. Plus I run a Snowthrower and little 6” wheels wouldn’t do so well......There are some differences tho’, hold the front wheel with clips, cotter pins or bolts? Mine use the bolts. Many Thanks to Eric Nice looking rig. 1 Share this post Link to post Share on other sites
gwest_ca-(File Mod) 11,055 #11 Posted February 8, 2021 After all that they were all listed as LH. Found another parts list where it was correct. 1 1 Share this post Link to post Share on other sites
953 nut 55,329 #12 Posted February 8, 2021 One more vote for eight inch front wheels and sourcing parts from Lincoln at https://a-ztractor.com/. I replaced the six inch set-up on my 310-8 with the eight inch wheels and short spindles and find the it giver a smoother ride. 1 Share this post Link to post Share on other sites
David414 289 #13 Posted February 8, 2021 Guys, many thanks for all the insights. Will make some phone calls and see what spindles and wheels are available.👍 1 Share this post Link to post Share on other sites
David414 289 #14 Posted February 8, 2021 17 hours ago, JCM said: It appears by the picture the 113381 and 82 are the short ones and more $ than the longer ones @JCM you are correct! 1 Share this post Link to post Share on other sites
Pollack Pete 2,273 #15 Posted February 8, 2021 Greased spindles are happy spindles. 1 Share this post Link to post Share on other sites
David414 289 #16 Posted February 8, 2021 25 minutes ago, Pollack Pete said: Greased spindles are happy spindles. Unfortunately the PO or owners, did not subscribe to that philosophy!😢 Its amazing how much abuse these tractors can take and still run. 1 1 Share this post Link to post Share on other sites