RickF 8 #1 Posted November 18, 2015 Hello, I've begun to take apart my tractor to replace what I suspect are leaky O-rings right behind the slider linkage for fwd/rev on my GT14. From looking at an exploded diagram of this assembly, there are 3 bolts that hold the cam block support, ( the part that holds the slider) to the Hydrogear housing. These bolts are in a triangular configuration, and are recessed inside this cam block support. The exploded diagram calls the bolts socket head, 1/4 x 20 x 1/2 bolts, but I have never seen anything like them. They look like a 12 point socket, but more points, like 20 points. Does anyone know what size socket these bolts use? Where can I find a wrench that would fit over them? Thank You for your help. Rick Share this post Link to post Share on other sites
953 nut 51,520 #2 Posted November 18, 2015 A 12 point 3/8" socket should do the job for you. 1 Share this post Link to post Share on other sites
shallowwatersailor 3,213 #3 Posted November 18, 2015 It sounds like a 12-point head. 2 Share this post Link to post Share on other sites
RickF 8 #4 Posted November 19, 2015 I guess they must be twelve point. They just look like more points. 1/4 inch, 12 point SAE doesn't fit over it, and 3/8 won't fit in the recess. or 5/16. I'm starting to think they may not be original. I hope I don't have to have someone with a TIG weld on new heads that I can turn out. I don't know, I'll try again in the morning. Thanks for the input. Rick Share this post Link to post Share on other sites
Shuboxlover 474 #5 Posted November 19, 2015 You'll need to use a 1/4" drive socket that's tapered at the end.....12 point like said above.... 1 Share this post Link to post Share on other sites
RickF 8 #6 Posted November 19, 2015 do you mean filed to a taper? Share this post Link to post Share on other sites
JimD 3,345 #7 Posted November 19, 2015 It sounds like a 12-point head. This should be pinned in the appropriate reference section imho. Mods? 1 Share this post Link to post Share on other sites
RickF 8 #8 Posted November 19, 2015 I'm going to file a 12 point, 3/8 into a taper and see if it works. Share this post Link to post Share on other sites
Shuboxlover 474 #9 Posted November 20, 2015 Actually, I was wrong. The 12 point sockets I have are Proto 3/8" and they come tapered and fit perfectly on the screw head without modification. Share this post Link to post Share on other sites
RickF 8 #10 Posted November 21, 2015 I just bought a set of Stanley 12 point sockets at Lowes. I was looking for a 9/32" (12 pt) socket because I thought that a 1/4" was too small. I could only get the 9/32" if I bought the whole set. They were cheapies but other wise, I would have had to special order the single socket. Turns out that even 9/32" was too big, So I took the 1/4", and hammered it down over the bolt head. That worked, and I was able to turn out the bolts fairly easily. Somebody tried to take these out one other time, maybe with pliers because the ends were chewed up so bad, I had trouble finding out how many points they were. I'm not going to use the same bolts when they go back together. Maybe I'll use torx or Allen bolts. (hardened steel), next time. Anyway the weather is still nice, and the plan is to get everything back together before snow hits CT. and hopefully this old tractor will be up to plowing it. Thank you all for your help. Rick 1 Share this post Link to post Share on other sites
953 nut 51,520 #11 Posted November 21, 2015 Glad to hear they came out for you, may want to run a tap through to clean the threads too. Good idea, give those problem bolts the old heave-ho. Share this post Link to post Share on other sites
rick 215 #12 Posted November 22, 2015 sounds like the screws that hold the crankshaft rear oil seal in place in the "B" blocks, 361, 383, 413, 440 cubic inch engines. We had to keep a 3/8 12 point socket in the tool box....everything else was 6 point. Share this post Link to post Share on other sites
