Jinma JW-03 Backhoe Removal

[RonMar]

Ron, not sure if you know but do you have any idea where the locking bars would attach if I am able to order some?

Thanks again!

Well if you look at the 3PH from the side, the tractor and the impliment are vertical, and the lower arms and toplink are mostly horizontal. Together these form a moveable parallelogram, with the back of the tractor and the impliment remaining vertical and in parallel as the impliment is raised and lowered. What the locking bars do is cut across this parallel structure, either from the toplink attach point on the tractor down to the lift arm attach point on the impliment, or from the lift arm attach point on the tractor up to the toplink attach point on the impliment. Placed diagonally across the parallelogram effectively locks it in place forming a rigid triangulated structure.

Here is a picture I found online. In this picture the toplink is blue, and they used 2 additional toplinks to form the locking bars, gold in color running from toplink attach point down to the lift arm attach points on the BH. the cool thing about this is that using the toplink fixtures allows you to really lock/pre-tension the structure, and would probablymake installing them a little easier. the fixed bars only really fit with the 3PH at one particular spot and will allow a little bit of movement.

3ph backhoe attchments - Bing Images

 

[sansregret50]

Well if you look at the 3PH from the side, the tractor and the impliment are vertical, and the lower arms and toplink are mostly horizontal. Together these form a moveable parallelogram, with the back of the tractor and the impliment remaining vertical and in parallel as the impliment is raised and lowered. What the locking bars do is cut across this parallel structure, either from the toplink attach point on the tractor down to the lift arm attach point on the impliment, or from the lift arm attach point on the tractor up to the toplink attach point on the impliment. Placed diagonally across the parallelogram effectively locks it in place forming a rigid triangulated structure.

Here is a picture I found online. In this picture the toplink is blue, and they used 2 additional toplinks to form the locking bars, gold in color running from toplink attach point down to the lift arm attach points on the BH. the cool thing about this is that using the toplink fixtures allows you to really lock/pre-tension the structure, and would probablymake installing them a little easier. the fixed bars only really fit with the 3PH at one particular spot and will allow a little bit of movement.

3ph backhoe attchments - Bing Images

Is it damageable to install the excavator on the 3 point? isn't it possible to break the frame when going on the road?

 

[RonMar]

It depends on the tractor and how hard you use the impliments. A far better install is to put the BH on a subframe that passes under the rear axle and provides a parallel load path to the tractor gearbox chassis...