/ X758 Deck leveling problems solved #41
- Jan 7, 2011
- Kubota L4330 GST w/FEL, Kubota RTV-XG850, Kubota ZD326S
I just purchased a 2014 X734 with 310 hrs. It's got the 54HC deck.
I replaced the spindle bearings and seals and re-leveled the deck. I've been studying my technical manual and the online parts diagrams and have been trying to figure out why the deck is at 2" when it is set to the 2.5" height. Both of the lift arms that are attached to the rock shaft appeared to be at the same orientation. I set the tire pressure per the manual. I started off by adjusting the clearance between the frame and draft arm because I noticed that the draft arm was contacting the frame when in the highest position. I set the clearance to 1/16.
I attached the deck, set the height knob to 2.5", and went through the deck level process by measuring to the blade tips. Adjusting the draft arm clearance had taken care of getting the deck pretty level from side to side but I dropped the right side about 1/16" to get it perfect. I then adjusted the level front to back to get the middle blade tip (when rotated to front of deck) 1/8" lower than the side blades. When the deck was off the tractor, I checked the position of the deck height cam stop to the position of the deck height knob. The cam was at it's lowest step when the knob was adjusted to the lowest cut height.
I checked it at the 2.5" setting and the cam was at the correct position. Checked again at the highest position and they agreed. I re-checked the draft arm clearance to the frame after leveling the deck and the draft arm is within 1/8" on both sides when the deck is fully raised.
Best I can tell, john deere's design prohibits the deck height setting to match the actual blade height. If the draft arm can't be raised any higher without contacting frame, I don't see how the deck could be raised an additional 1/2" to get the actual height to match the deck height knob setting.
Looks like I'll just have to remember that the mower is cutting 1/2" lower than it's setting.