608KEB 796 #26 Posted January 9, 2015 So I fired the 520H up about 10 minutes ago and its charging like it should. I'll look at it in the a.m. Share this post Link to post Share on other sites
boovuc 1,090 #27 Posted January 9, 2015 The 520's have a lot of electrical gremlins and a lot more if the tractor was left outside for a lot of it's life. Before you start to delve into anything that may be suggested..................take every single electrical connector apart and clean the contacts of each. (A little sand paper or small file). For the pin connectors, check for loose pins and spray the connectors thoroughly with electrical contact cleaner. Do the switch, the safety switches and look closely at the fuse block. If the contacts on the fuse block are corroded and or you see melted plastic around the contacts, you'll need to replace it. If doing this doesn't bring back your charge, then you'll need to do some detective work. Go to the manuals section and look for the wheel Horse electrical demystification manual. It will have schematics of the tractors electrical system which you'll need to go through to get an idea how everything is laid out. Share this post Link to post Share on other sites
608KEB 796 #28 Posted January 9, 2015 It is charging now. I did spray electric contact cleaner into the block yesterday before installing new fuses in. It looked like it was keep inside prior to me. I'll take the fuse block off and look closer tomorrow. I've only put about 20 hours on it since owning it. I'm glad I kept my snowthrower, weights and chains on the B-100! It doesn't hurt to have a backup Share this post Link to post Share on other sites
608KEB 796 #29 Posted January 9, 2015 So I ran the 520H for about a hour today. No problems. The volt meter was at about 14 with nothing on. With the lights on it was about 12.5-13. It didn't lose any charge. I guess I'll monitor it for a while. Share this post Link to post Share on other sites
cheesegrader 433 #30 Posted January 10, 2015 Let's see..... Brutally cold garage and tractor covered with snow? Check! Snowblower and cab attached so you can only get the hood half open? Check and Check! Intermittent electrical problem that makes you want to stab your own eyes with a multi-meter lead? CHECK! I feel your pain. As much as I love these tractors, there are some major design flaws. The electrical system in general, and the fuse block in particular come to mind. I still think you have a short in or around the fuse block, and I wouldn't spend a bunch of time searching for other issues until I ripped the %*&%#$#!!ing thing out. 1 Share this post Link to post Share on other sites
608KEB 796 #31 Posted January 11, 2015 I just ordered a new fuse block and the rubber piece that goes on top of fuse block. I hear you with the design of the fuse block.it will take some time to get the bugs fixed. But overall I'm happy with the tractor. But there are many more things that can go wrong electrically compared to the B & C series.... And I'm no electrician Share this post Link to post Share on other sites
boovuc 1,090 #32 Posted January 11, 2015 My 416's fuse block looked like a remnant from someone's burn barrel. It also decided to rewire itself to the point that it didn't require both relays anymore though both were wired up! I wired it with individual fuse holders connecting the bridge between them as they would be in the factory fuse holder. I also found where a past PM re-wired a broken 9 pin connection wrong. It took care of the issues including the no start feature on 1 out of 5 tries. All Toro needed to do was mount the fuse block horizontally and it would have saved a lot of grief to thousands. Just keeping the minuscule grass dust and small clippings out of the bottom of the fuse block would have kept a majority of the electrical issues from ever happening on the 400 and 500 series tractors. Amazing what aging a tractor in working conditions can do to expose engineering and parts design flaws. Maybe they didn't expect anyone keeping them for 25+ years. Trouble is some of the early C-series tractors were already aged to that point when they created the 300, 400 & 500 series. I wonder if the Chinese made lawn & garden tractors/parts have any thought in them to last this long? Short answer..................I'll take Toro's little goofs any day compared to a Murry/MTD/Craftsman/Storebrand/Newer Cub/Newer JD/newer Husqvarna/newer etc./etc) Just follow the schematic for the year/model machine you have and wire the block as it is laid out and you'll be good to go and have the biggest issue electrically with your tractor a distant memory! 1 Share this post Link to post Share on other sites
608KEB 796 #33 Posted January 11, 2015 I also ordered the 9 pin connector from www.kitchen classics and more.com Thanks Craig! 1 Share this post Link to post Share on other sites
