rrr4quality Posted August 10 Share Posted August 10 Roll pin on the hi/low shifter wore out. I have tried calling the local dealer to find out if they have one in stock before I drive the twenty miles over there but I haven’t had much luck with the parts department. I’m not sure I got all of it out or if there’s still a broken piece in there. Anyone know the size or part number for the pin? Quote Link to comment Share on other sites More sharing options...
rrr4quality Posted August 10 Author Share Posted August 10 Forgot the pictures! Quote Link to comment Share on other sites More sharing options...
Cdfarabaugh Posted August 11 Share Posted August 11 13 minutes ago, rrr4quality said: Forgot the pictures! Pretty sure it's just a 1/4" roll pin, roughly an inch long or so. Our local Ace hardware store stocks a TON of fasteners, pins, keys chain links etc. I picked up my last one there. Someone correct me if I'm wrong but isn't the factory one a double spiral pin? 1 Quote Link to comment Share on other sites More sharing options...
snoshoe Posted August 11 Share Posted August 11 It is 1/4x1-1/4. They were never roll pins. They were groove pins. Didn't work much better. What does work is make your own pins. Chuck 5/16 rod in lathe. Turn 1-1/2 inch down to 1/4 inch next to chuck. Outer end will be .008 larger from deflection. If you try to drive in with hammer and punch it will bend. Use an air hammer and it will slip right in. Only once did I have to make a larger pin. They do not shear or fall out. A drill press with cutter clamped in vise on table works if you don't have lathe. Quote Link to comment Share on other sites More sharing options...
Sparky Posted August 11 Share Posted August 11 It's not a roll pin. A roll pin won't last two weeks. Use a Tapered Groove pin. I put in 1/4"x 1.5". That covers both lengths. If it doesn't seem to drive in tight, put a hose clamp around it to keep it in, if you don't want to replace worn parts. Travis Quote Link to comment Share on other sites More sharing options...
stronger800 Posted August 11 Share Posted August 11 Grade 8 quarter 20 baby. In a pinch. I like the hose clamp idea too. I have seen that done before. Quote Link to comment Share on other sites More sharing options...
pt756 Posted August 11 Share Posted August 11 also dont do like I did by accident replaced the pin , not sure which shaft now, but was a little too long in the 856, eventually wore a hole in one of the tubes for power steering, Quote Link to comment Share on other sites More sharing options...
rrr4quality Posted August 11 Author Share Posted August 11 Thanks guys, someone must’ve replaced it with a roll pin at some point. Quote Link to comment Share on other sites More sharing options...
stronger800 Posted August 11 Share Posted August 11 The original pins are solid, with one little extrusion on them of sorts that makes them tighter. If you put a bolt in it (because I bet you have bolts in your garage right now) just make sure it doesn’t hit anything when both levers are shifted through there travel. I know there’s one orientation where if you have 1/2” of bolt sticking out, it hits something, but if you cut the bolt short….perfect fit. I have used an allen had shoulder bolt, or a shear bolt, with a longer shank on it, so that the shank was against the shaft and collar, opposed to just a regular bolt where the threads would end up against the collar and could wear/create wear. imo, that’s a legitimate fix, working with what you have on hand, quick like Quote Link to comment Share on other sites More sharing options...
HydroTek Posted August 11 Share Posted August 11 They were 1/4 x 1-1/4 spiral roll pins in there originally -- the other pin you guys are talking about is called a "groove pin " , one of those would also be good I drill the worn hole out , right on the tractor and use a 5/16 spiral pin to replace You may need to remove some of the casting to get straight at the pin hole with a long drill bit Quote Link to comment Share on other sites More sharing options...
rrr4quality Posted August 11 Author Share Posted August 11 I was towards the end of baling hay when it broke on me. Of course I didn’t know what happened. I was able to put it in reverse but that was it. Unfortunately I couldn’t finish baling in reverse so I had to either figure something out or switch to a different tractor. Thankfully I was able to remove the side covers and get it into low. I thought about running a drill bit through there to make sure everything was out of the hole. My only concern on going bigger would be weakening the shaft that goes down into the transmission. We use metal bonding adhesive at work all the time, If everything was clean I could pack the hole with some and then drive a new pin in. It should keep it from working back out. Thanks again for the info! Quote Link to comment Share on other sites More sharing options...
mrfred54 Posted August 11 Share Posted August 11 617937R1 is the part #. Book says its 1/4 x7/8 spiral pin Quote Link to comment Share on other sites More sharing options...
stronger800 Posted August 11 Share Posted August 11 That stub shaft is pretty stout. I wouldn’t think going 5/16 would bother it at all. it’s also a replaceable shaft…(.that’s about $160 at dealer and $40 aftermarket) Quote Link to comment Share on other sites More sharing options...
Jeff-C-IL Posted August 11 Share Posted August 11 DAd's 1066 had the same issue - loader work! We tried roll pins, groove pins, spiral pins, roll pins inside other roll pins (actually worked OK). The drilled out 5/16" spiral pin fix finally lasted. Quote Link to comment Share on other sites More sharing options...
Maynard Posted August 11 Share Posted August 11 16 hours ago, Cdfarabaugh said: Pretty sure it's just a 1/4" roll pin, roughly an inch long or so. Our local Ace hardware store stocks a TON of fasteners, pins, keys chain links etc. I picked up my last one there. Someone correct me if I'm wrong but isn't the factory one a double spiral pin? 1/4" X 2" heavy spirol pin. CNH p/n 86644088 $3.85 at our store. 1 Quote Link to comment Share on other sites More sharing options...
Farmall Doctor Posted August 11 Share Posted August 11 Quote Link to comment Share on other sites More sharing options...
ksfarmdude Posted August 11 Share Posted August 11 Cut off a grade 8 bolt the right length and run a clamp around it if neccesary probably last time it will need repaired Quote Link to comment Share on other sites More sharing options...
7and8and1456 Posted August 11 Share Posted August 11 35 minutes ago, ksfarmdude said: Cut off a grade 8 bolt the right length and run a clamp around it if neccesary probably last time it will need repaired Yes, cut a bolt or a piece of a hay rake tooth and fasten a hose clamp around the shaft, works great. Make certain tightening screw of the hose clamp does not contact anything as shaft moves while shifting. Quote Link to comment Share on other sites More sharing options...
Matt Kirsch Posted August 11 Share Posted August 11 Somebody wants a lifetime supply to share with friends, Mcmaster Carr sells heavy duty coiled spring pins that size in a pack of 25 for about $16. Step up to 1-3/8" length and they sell in packs of 10 for $6.50. Then you only have one lifetime's supply. Quote Link to comment Share on other sites More sharing options...
Sparky Posted August 11 Share Posted August 11 39 minutes ago, Matt Kirsch said: Somebody wants a lifetime supply to share with friends, Mcmaster Carr sells heavy duty coiled spring pins that size in a pack of 25 for about $16. Step up to 1-3/8" length and they sell in packs of 10 for $6.50. Then you only have one lifetime's supply. Just buy the tapered groove pins from them....;-) Travis Quote Link to comment Share on other sites More sharing options...
rrr4quality Posted August 11 Author Share Posted August 11 Now I just have to decide who’s advice to take! I appreciate all the suggestions, I’ll get it fixed this weekend. 2 Quote Link to comment Share on other sites More sharing options...
stronger800 Posted August 12 Share Posted August 12 When those break in the field and you’re hooked to the manure spreader, and it’s freezing, that’s a ten minute fix Quote Link to comment Share on other sites More sharing options...
7and8and1456 Posted August 12 Share Posted August 12 Picture of one of my tractors. Has two pins made of bolt or hay rake tooth or maybe just an original pin that would not stay in place, now held in place with hose clamps. 1 Quote Link to comment Share on other sites More sharing options...
HydroTek Posted August 12 Share Posted August 12 14 minutes ago, 7and8and1456 said: Picture of one of my tractors. Has two pins made of bolt or hay rake tooth or maybe just an original pin that would not stay in place, now held in place with hose clamps. Looks like one of the jobs I done -- hose clamp is on several of mine Quote Link to comment Share on other sites More sharing options...
Maynard Posted August 12 Share Posted August 12 9 hours ago, 7and8and1456 said: Picture of one of my tractors. Has two pins made of bolt or hay rake tooth or maybe just an original pin that would not stay in place, now held in place with hose clamps. 8 hours ago, HydroTek said: Looks like one of the jobs I done -- hose clamp is on several of mine Been using hose clamps here since the 1970s, also on Cub Cadet Hydro drive plat to keep the hardened drive pin in place. 17 hours ago, Maynard said: 1/4" X 2" heavy spirol pin. CNH p/n 86644088 $3.85 at our store. On 8/10/2023 at 7:53 PM, rrr4quality said: Roll pin on the hi/low shifter wore out. I have tried calling the local dealer to find out if they have one in stock before I drive the twenty miles over there but I haven’t had much luck with the parts department. I’m not sure I got all of it out or if there’s still a broken piece in there. Anyone know the size or part number for the pin? To clear up some confusion.... In parts on the 66 series a heavy spirol pin 1/4" X 2" p/n 6572196R1, subs to p/n 86624088 Whereas, in 56 series parts a 134/" X 1 1/4" groove pin p/n 443039, subs to, p/n 135-358 The High-Low shift plate in both is p/n 527900R1 See illustrations attached. The Pins for the speed shift collar are, in sub order for 56 series, 135-76, subs to, 435-1820, subs to, 87852. For the 66 series sub order is, 142521, subs to, 435-1820, subs to 87852. BTW, 142521 is called a hydraulic tube. Clear as mud? 2 Quote Link to comment Share on other sites More sharing options...
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