Help 48inch deck vibration

[wheel horse man 56]

When i rev up the engine the deck vibrates like crazy when i get off the tractor and hold Pressure with my foot on the deck the vibration noise goes away I pulled the belt off check the bearings they’re good I looked at the blades and they don’t seem to be bent I did sharpen them a couple days ago i also greased the Spindles very well The blades don’t look like Wheel Horse blades They have drop to them any ideas whats my problem ????

[ZXT 2,401]

1 hour ago, wheel horse man said:

When i rev up the engine the deck vibrates like crazy when i get off the tractor and hold Pressure with my foot on the deck the vibration noise goes away I pulled the belt off check the bearings they’re good I looked at the blades and they don’t seem to be bent I did sharpen them a couple days ago i also greased the Spindles very well The blades don’t look like Wheel Horse blades They have drop to them any ideas whats my problem ????

I presume the vibration started after you sharpened the blades and greased the spindles? Did you pull the blades off to sharpen them? If you did, is it possible you put one of them back on upside down?

 

As old as the tractor is, I'm sure it's had the blades replaced. Check to see if all of the bolts that attach the spindles to the deck are tight.

 

[gwest_ca-(File Mod) 11,033]

Check to make sure there is not a piece of wood or something jammed in the groove of one of the V-pulleys. When the belt climbs over the foreign material it sets up a vibration.

The biggest cause of deck vibrations are blades that are not balanced.

 

Garry

[peter lena 8,583]

you might also have the start or growth of a spindle crack in the deck, drop the deck , do a detailed inspection and cleaning , verify blade placement for correctness . i have found the idler pulley to be a prime issue for noise and shaking, but a thorough inspection will undoubtedly find your issue. pete 

[lynnmor 7,302]

3 hours ago, gwest_ca said:

Check to make sure there is not a piece of wood or something jammed in the groove of one of the V-pulleys. When the belt climbs over the foreign material it sets up a vibration.

The biggest cause of deck vibrations are blades that are not balanced.

 

Garry

 

The biggest cause of deck vibrations are blades that are not balanced. 

My opinion as well.

[ronhatch 406]

If it started shaking after you sharpened the blades would be a big clue in my book.  What did you sharpen them with? An electric grinder of some type? I use a  good 12" Mill file so I can control it better and take off a little as possible.  Try balancing them.

 

Edited August 10, 2019 by ronhatch

[953 nut 55,091]

Take a look at the deck in the area of the spindles. When the deck was stamped out at the factory they created some stress points that crack over time. Removing and installing the blades may have further weakened one of these areas.