Stablizer lift arms holes for 3pt hitch

[botayota]

The stablizer lift arms for the 3 point hitch each have holes ... The left arm as 3 holes, while the adjustable right arm only has two. What determines which holes I should be using when attaching to the lower link arms...
any particular implement settings...etc?

Cheers,
Clint

 

[thespanishfarmer]

Hi Clint.

This is my own personal view here and I would welcome any correction or practical criticism.

Different implements require different ride heights for their use.
Some implements have a fixed 3pth connection others may have an adjustable height connection within the actual implement - ie. un-bolting and moving the linkage points up or down.
What the holes on the lift arms allow you to do is to finely adjust the height of the lower link arms to meet with the implememt you are attatching.
If by attaching the the left lower link arm by the lowest hole on the the lift arm, it will mean that the implement will be able to be lowered to a greater degree as opposed to being attatched to the upper hole on the lift arm. It all depends on what your ultimate use would be of a given implement.
The holes on the right lift arm are merely to adjust the level of the right lower link arm to match that of the height to the left with that added advantage of a screw adjustment for fine tuning.
To clarify, set your tractor on level ground and set your 3pth on the lowest hole. Raise the implement to max height and take a mental note of how high the implement is off the ground. Reset onto the higher hole and raise the implement to max height and you will see that the implement is higher off the ground.
The above takes into account the correct adjustment of the top link for level application of the implement.
Hope this may help.
Gary

 

[cba]

What Gary said. Additionally, when using a simple low cost grader blade, I find this is the only way to tilt the blade (when grading a road one needs to slant and tilt the blade in order to crown a road). Better dearer grader blades of course have this tilt adjustment built in.

I have seen that many gray market tractors have the right lift arm replaced by a hydraulic arm with an electric position feedback controlled by a box with two knobs on the right fender. This saves getting off the tractor for this adjustment as well as the hydraulic top link, and makes it automatic for a particular rice paddy implement. This is also why some tractors come new with this rattling rectangular plastic blanking plate on the right fender, its exactly to fit this control box that is very popular in Japan. Chris