oceanobob
Senior Member
Terex 8042 (square shooter w Terex name) has about 3k hours. Cummins powered, big heavy axles, a tilt cylinder for each side of the axle at each wheel, etc. Has been a good machine and typically pretty straightforward to work on. Now that I have it (in lieu of a new pickup: decision made a while ago), I dont know why I waited so long. Very handy machine. Collected some accessories: an adjustable boom jib, a cleanup bucket, a man basket. We once put a concrete breaker on the boom - by driving the U17 little Kubota mini onto the forks and reaching out with it to break some flatwork.
Here is the particular issue where I would appreciate a couple of suggestions.
The joystick has a center button which changes the mode of the up down of the boom to fork tilt. Said item acting indifferent, intermittent, not working.....took some of it apart, maybe it is the switch in the joystick, or the lead wires are fatigued. Switch connects to a relay, maybe that is the issue? The wires move a little every time the joystick is moved, they may not be what we call panel rated fine braided. Will try to make a loop around the handle wherein the bending is not all at the same area although the sheathe breaking off in that one section prolly was the precursor.
If I want to order and replace a new switch for the joystick, would be appreciative of how to remove the switch - a pic of the stick is shown below. Ir is not a problem to get the wires up above the deck and then spin off the handle - if that is the method.
And not related to the electrical, but I can see the seals on the four sleeve valves are in leak stage One, where they collect dirt. Are these joystick controls sent anywhere special to get new seals? Or is that something the local hydraulic shop does??
Then there is the relay from underneath no name only some strange acronym USA, olde skool LOL.
And the relay face where the wires attach.
A terminal S that is connected to the switch in the joystick, making the coil (and it wont function unless the frame is grounded).
Numbers 3 and 2 are made to each other when the coil is energized
A sketch of the electrical in the relay.
After cleaning it up a bit and taping the likely exercised spot in the wires, it is back to working. But I would like to get the new parts while it is presently (temporarily) restored to order.
Many thanks in advance!
Here is the particular issue where I would appreciate a couple of suggestions.
The joystick has a center button which changes the mode of the up down of the boom to fork tilt. Said item acting indifferent, intermittent, not working.....took some of it apart, maybe it is the switch in the joystick, or the lead wires are fatigued. Switch connects to a relay, maybe that is the issue? The wires move a little every time the joystick is moved, they may not be what we call panel rated fine braided. Will try to make a loop around the handle wherein the bending is not all at the same area although the sheathe breaking off in that one section prolly was the precursor.
If I want to order and replace a new switch for the joystick, would be appreciative of how to remove the switch - a pic of the stick is shown below. Ir is not a problem to get the wires up above the deck and then spin off the handle - if that is the method.
And not related to the electrical, but I can see the seals on the four sleeve valves are in leak stage One, where they collect dirt. Are these joystick controls sent anywhere special to get new seals? Or is that something the local hydraulic shop does??
Then there is the relay from underneath no name only some strange acronym USA, olde skool LOL.
And the relay face where the wires attach.
A terminal S that is connected to the switch in the joystick, making the coil (and it wont function unless the frame is grounded).
Numbers 3 and 2 are made to each other when the coil is energized
A sketch of the electrical in the relay.
After cleaning it up a bit and taping the likely exercised spot in the wires, it is back to working. But I would like to get the new parts while it is presently (temporarily) restored to order.
Many thanks in advance!