MarkS 122 #1 Posted August 11, 2018 I have a mower deck of a L-157 lawn ranger. I put it on the tractor and seemed to work fine. I took the blades off one at a time to sharpen them, and made sure I put them back exactly like they were on. After I sharpened them, I tested it out again. This time I heard the blades hit. The blade on the left side will spin with the "drive shaft" but it will also spin freely. I took the cover off the gears, and they seemed to look fine. If anyone knows what could be wrong, it would be greatly appreciated. Share this post Link to post Share on other sites
ol550 830 #2 Posted August 11, 2018 Gears are keyed to the shaft. 1 Share this post Link to post Share on other sites
MarkS 122 #3 Posted August 11, 2018 12 minutes ago, ol550 said: Gears are keyed to the shaft. Where is the key located? Share this post Link to post Share on other sites
ol550 830 #5 Posted August 11, 2018 5 minutes ago, ol550 said: Keys are part #11 Share this post Link to post Share on other sites
MarkS 122 #6 Posted August 11, 2018 56 minutes ago, ol550 said: Keys are part #11 Thanks! Does anyone know what the dimensions of the key are. I want to try to find one local, so I can replace it tomorrow. Share this post Link to post Share on other sites
pfrederi 17,666 #7 Posted August 11, 2018 (edited) That is not the diagram for an Lawn Ranger Deck This is the correct one the Woodruff key is a #5 Edited August 11, 2018 by pfrederi Share this post Link to post Share on other sites
gwest_ca-(File Mod) 11,033 #8 Posted August 11, 2018 937084 is a #5 Woodruff key. Dimensions 1/8" x 5/8" but it will not be exactly 5/8" because that is the size of cutter that cuts the groove. The key will be .612" long. 5/8" = .625" Garry Share this post Link to post Share on other sites
953 nut 55,078 #10 Posted August 12, 2018 1 hour ago, MarkS said: took the blades off one at a time to sharpen them, and made sure I put them back exactly like they were on. Before you take it apart be sure that the blade and hub were properly aligned and tightened. Seems very unlikely that the key would go bad at the same time you sharpened the blades. Share this post Link to post Share on other sites
gwest_ca-(File Mod) 11,033 #11 Posted August 12, 2018 The original key is likely hiding in the grease around the gear. Garry Share this post Link to post Share on other sites
MarkS 122 #12 Posted August 12, 2018 Thanks everyone for the replies. Ill be getting my magnet out tomorrow! Haha! Share this post Link to post Share on other sites
gwest_ca-(File Mod) 11,033 #13 Posted August 12, 2018 With the blade off the shaft the shaft can be pushed up through the gear enough that the Woodruff key comes out of the gear. Unless the gear and shaft are perfectly aligned when the shaft comes back down into operating position the key is pushed out of it's slot in the shaft and lays on the side of the gear. Mower is engaged and the key is thrown off to the side. Garry 2 Share this post Link to post Share on other sites
