Jimmy 192
I have a lX865. I believe its comparable in size, just older. Do the chains on yours tighten by sliding the axels outward ,with the slotted holes in the hubs? Are you at the limit with the studs at the end of the slot in the hub?
That 1/4 inch movement is rocking the tire back and forth is with no force. With mine adjusted at 1/4 inch I can still force the wheel farther in both directions. Thats not what their wanting. the chain will still have some sag that gives that extra movement with pushing the tire.They want 1/4 inch with the wheel off the ground that rocks back and forth easy.
If your at the end of adjustment and have an inch and a half of easy movement you might need chains. The loose chains will cause extra wear on the sprockets and could derail snd cause worst damage.That slop also causes a jerk when chainging directions that puts extra stress on the drive train.
With the boom dropping and no visable leaks its probably a load check. Its a valve that holds the position where you stop. Its located in the main control valve and is usually accesable without pulling the whole control valve.
My parking brake is adjustable. I believe yours is also.They are a pain and expensive to replace because you have to pull the hyd. motors and gear reduction boxes.
Here is a previous post about the parking brake adjustment. Its for a LX865 but I belive it is like yours. Try adjusting it. [
Parking Brake needs help ] Mike