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rustyorange45 
Silver Level Access
Joined: 01 Sep 2013
Location: Vernon Co. MO.
Points: 406
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 Topic: Rebuilding gearbox
Posted: 12 Oct 2016 at 2:47pm |
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I finally finished putting the gearbox to my model 184 rotary mower back together. New bearings, seals, and gaskets. It turns smooth, but a lot harder than I think it should. I started it up and mowed my fence row, and when I was done the gearbox was too hot to touch. It still turns smooth and doesn't make any noise. Will it run cooler when the bearings wear in? Anyone with experience of this? Thanks!
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1953 WD45 WF/Model 90 Loader, Oxnard Rear Blade, 80R Mower, Model 209 Disc, WD Rear Mounted Scoop, Model 184 & 160 Rotary Mowers, 1952 CA NF/L306CA mower, 1953 CA WF/Model 8 Loader.
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CrestonM
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Joined: 08 Sep 2014
Location: Oklahoma
Points: 8457
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Posted: 12 Oct 2016 at 2:53pm |
Do you set bearing pre-load on these? I wouldn't think so(I would think they would be sealed) but if so, they might be too tight.
If they're sealed, unless something isn't lined up just right and is causing more friction, I wouldn't think it would get too hot.
My brushhog gear box gets pretty warm, but not that hot. It's a TSC brand.
Edited by CrestonM - 12 Oct 2016 at 2:59pm
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Hubert (Ga)engine7
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Joined: 12 Sep 2009
Location: Jackson Cnty,GA
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Posted: 12 Oct 2016 at 3:02pm |
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X2, sounds like the bearings are too tight.
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Just an old country boy saved by the grace of God.
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Gary(VA)
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Joined: 13 Sep 2009
Location: Troutville, VA
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Posted: 12 Oct 2016 at 3:25pm |
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Did you make sure the gears have backlash and aren't too tight? Are there shims that can be installed or removed as needed?
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Leon n/c AR.
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Joined: 19 Mar 2013
Location: Heber Springs A
Points: 175
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Posted: 12 Oct 2016 at 4:00pm |
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On my Howse brand hog you add or remove paper gaskets on the input side to preload brgs and gears. Leon
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thendrix
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Joined: 04 Feb 2013
Location: Fairmount GA
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Posted: 12 Oct 2016 at 4:55pm |
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How did the bearing bores look? If the bearings go in a little off you can still get the shaft in but you'll have more pressure to one side and cause excess friction
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"Farming is a business that makes a Las Vegas craps table look like a regular paycheck" Ronald Reagan
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Dans 7080
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Posted: 12 Oct 2016 at 8:07pm |
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How full is it on oil? Overfilling will cause a gearbox to excessively heat.
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When someone tells you Nothings Impossible, Tell them to slam a revolving door
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MACK
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Joined: 17 Nov 2009
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Posted: 12 Oct 2016 at 9:34pm |
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How big is the cutter and much HP is on the front? MACK
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rustyorange45
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Joined: 01 Sep 2013
Location: Vernon Co. MO.
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Posted: 13 Oct 2016 at 8:05am |
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The bottom shaft is where it is tight. The bottom bearing is pressed on to the shaft to the stop and I pushed the top bearing down the shaft into the race and then pushed the gear onto the shaft. At this point it was tight. I had packed the bearings with wheel bearing grease. When I put the top of the gearbox together it spun easily and I used the shim gaskets to get my gear backlash right. I filled with 2.5 pints of 140 weight gear oil as per owners manual. It is 7 foot pull type mower pulled by a WD45.
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1953 WD45 WF/Model 90 Loader, Oxnard Rear Blade, 80R Mower, Model 209 Disc, WD Rear Mounted Scoop, Model 184 & 160 Rotary Mowers, 1952 CA NF/L306CA mower, 1953 CA WF/Model 8 Loader.
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