Jeff-C175 7,203 #1 Posted November 18, 2021 I'm going to investigate this further later today but I noticed that the brake drum on my C-125 is kinda rattly loose on it's shaft. Tried to tighten the bolt (and loosen too) but that shaft just spins. Is there a 'correct' method to use in order to lock that shaft so it doesn't spin so that I can investigate why the drum seems loose? 1 Share this post Link to post Share on other sites
squonk 41,980 #2 Posted November 18, 2021 I believe the shaft has a flat. If the drum is loose it is most likely worn or cracked. You should be able to get the bolt out with an impact gun and slide it off 2 Share this post Link to post Share on other sites
Pullstart 63,632 #3 Posted November 18, 2021 I didn’t know C series Sunstrand transmissions have brake drums? 2 Share this post Link to post Share on other sites
kpinnc 13,167 #4 Posted November 18, 2021 Should be the common drum found on most any WH tranny. They should have a double D flat as was already mentioned. Hopefully the drum is wallowed and the shaft is OK. If so, just find a donor drum. If the shaft is buggered up, that may be a bit harder to find. 1 Share this post Link to post Share on other sites
Achto 28,241 #5 Posted November 18, 2021 Can you set the parking brake to hold the drum still while your wrenching on the bolt? 1 Share this post Link to post Share on other sites
Pullstart 63,632 #6 Posted November 18, 2021 Sunstrands don’t have brake drums though? 1 Share this post Link to post Share on other sites
squonk 41,980 #7 Posted November 18, 2021 29 minutes ago, Pullstart said: Sunstrands don’t have brake drums though? The later ones do. like The C161's and such 3 Share this post Link to post Share on other sites
Pullstart 63,632 #8 Posted November 18, 2021 1 minute ago, squonk said: The later ones do. like The C161's and such Huh. Well, ya learn something everyday! 4 Share this post Link to post Share on other sites
squonk 41,980 #9 Posted November 18, 2021 My Grandmother used to say, the only people who stopped learning are dead! 3 Share this post Link to post Share on other sites
Pullstart 63,632 #10 Posted November 18, 2021 Just now, squonk said: My Grandmother used to say, the only people who stopped learning are dead! Or just plain stubborn… I was taught if you learn something you can go home. What if I’m already there? 3 Share this post Link to post Share on other sites
elcamino/wheelhorse 9,360 #11 Posted November 18, 2021 @squonk read your PM please. Share this post Link to post Share on other sites
stevasaurus 22,972 #12 Posted November 18, 2021 Actually, to be correct...the Sundstrand is the hydro part of the trans. The transaxle is usually Wheel Horse. If you look in some of the IPL's the Sundstrand has one part number, while the transaxle has it's own part number...much like the manual transmissions. The brake drums on my 60's horses use a "C" clip and the drum is keyed. I don't know if they are all keyed, I just assumed they are...it makes sense. As for replacing a bad shaft...in the Section V 8 speed and maybe even in a hydro, it is just the cluster gear shaft. A-Z should have tons of them. 1 1 Share this post Link to post Share on other sites
Jeff-C175 7,203 #13 Posted November 18, 2021 1 hour ago, Achto said: Can you set the parking brake to hold the drum still while your wrenching on the bolt? No, the lining is completely MIA. Steel on steel, doesn't hold. I can't see any way to lock that in place, might have to use the impact but I prefer not to if possible. The drum is actually on a shaft coming out of the hydraulic motor. Yes, a double D. I want to think that it's simply LOOSE! and not DAMAGED! 1 1 Share this post Link to post Share on other sites
stevasaurus 22,972 #14 Posted November 18, 2021 Jeff...try hold the input pulley in gear or in neutral should not matter. Is this a manual transmission?? 1 Share this post Link to post Share on other sites
stevasaurus 22,972 #15 Posted November 18, 2021 How about a picture of what we are talking about?? 2 Share this post Link to post Share on other sites
Snoopy11 5,717 #16 Posted November 18, 2021 1 minute ago, stevasaurus said: How about a picture of what we are talking about?? I was thinking the same thing, Steve. Don 1 Share this post Link to post Share on other sites
Maxwell-8 4,366 #17 Posted November 18, 2021 1 hour ago, Pullstart said: Sunstrands don’t have brake drums though? My c175 has one, the tranny looks a lot like a 8speed with coolingfins and a big pump ontop 2 1 1 Share this post Link to post Share on other sites
Horse Newbie 7,168 #18 Posted November 18, 2021 5 hours ago, Jeff-C175 said: I'm going to investigate this further later today but I noticed that the brake drum on my C-125 is kinda rattly loose on it's shaft. Tried to tighten the bolt (and loosen too) but that shaft just spins. Is there a 'correct' method to use in order to lock that shaft so it doesn't spin so that I can investigate why the drum seems loose? Maybe an oil filter wrench would fit around the brake drum allowing you to hold it to check/ tighten… 1 Share this post Link to post Share on other sites
Horse Newbie 7,168 #19 Posted November 18, 2021 3 hours ago, Achto said: Can you set the parking brake to hold the drum still while your wrenching on the bolt? Why didn’t I think of that when I suggested an oil filter wrench ?… 2 Share this post Link to post Share on other sites
Horse Newbie 7,168 #20 Posted November 18, 2021 3 hours ago, Pullstart said: Huh. Well, ya learn something everyday! Man… I thought you were the WH Guru ! 3 Share this post Link to post Share on other sites
Pullstart 63,632 #21 Posted November 18, 2021 7 minutes ago, Horse Newbie said: Man… I thought you were the WH Guru ! very, VERY far from the truth! 2 Share this post Link to post Share on other sites
Jeff-C175 7,203 #22 Posted November 19, 2021 5 hours ago, stevasaurus said: Is this a manual transmission?? No, auto, Sundstrand. 3 hours ago, Horse Newbie said: Maybe an oil filter wrench would fit around the brake drum allowing you to hold it to check/ tighten… I was thinking the same thing. The 'strap wrench' type. I need to remove that mess of a brake band anyhow. I'm not working on that part yet, but getting there. Had to take out a bunch of stuff under the dash, the hydro lever, brake return to neutral lever, etc, to get to the broken spring clip for the brake safety switch. No way to get in there and drill out the rivets (or grind them off with the dremel) with all that stuff in the way. But it's a good excuse to take it all apart and clean all that stuff up. Particularly the hydro speed control, that was all rusted up and not working exactly right, which is the way I like things to be. Pointing to the drum in yellow, the blue circle is the nut, and you can see that someone has been 'on it' in the past. It's a little bit buggered up. This is from the front. Hoping for the best though... just loose... And from the back: And a wider view for reference of the location behind the left rear wheel. In this one I've circled where the missing pedal safety switch and the two pop rivet holes for the spring clip that actuates the switch are. Easy to get to from this side, but impossible from the other with all that stuff in the way. After I get this part finished I'll move on to the drum issue. 2 Share this post Link to post Share on other sites
Snoopy11 5,717 #23 Posted November 19, 2021 (edited) What about putting something in between the brake band and the drum...? Like...cardboard? Then have the brake on... and see if you can tighten...? Don Edited November 19, 2021 by Snoopy11 Missspellation 3 Share this post Link to post Share on other sites
Snoopy11 5,717 #24 Posted November 19, 2021 A sheet of felpro gasket maker... or maybe a sheet of silicone would work better than cardboard though... in between the brake band and drum... Don 2 Share this post Link to post Share on other sites
Jeff-C175 7,203 #25 Posted November 19, 2021 (edited) 3 minutes ago, Snoopy11 said: Like...cardboard? I was thinking rolled up sandpaper. Ya know... I didn't think to look, but I probably would have noticed if there was a hole in the face of the drum to stick a pin into and lock it in place. I'm going back out after my coffee break and look. Edited November 19, 2021 by Jeff-C175 2 Share this post Link to post Share on other sites
