443/450 question, new user

[nickblaze466]

I have a '96 450 with a gas kohler, that i love to death, it was my first bobcat and so far has been awesome. it has aux hydros, have to move the right stick over to engage them. has the quick connects, and they have the caps on them because i never use them. also, when i try to pick up something too heavy, it will tip forward - which i thought was normal. on the 443, the aux hydros seem like they are always flowing. there is a hose going from top to bottom, and when i remove the hose everything stays sealed, but the arms won't raise and she won't move. plug the hose back in, everything is back to normal. it has foam filled tires, wheel weights and some other counter weight in the back - the 450 does not - but with the 443 when i get to something too heavy, it won't tip - it just won't lift it. so my question is: why do the aux hydros always flow? how do i turn them off? second: why will it just not lift something thats too heavy? is it possible there is enough counter weight that the hydros simply cannot lift it up? i'm assuming the diesel motor itself is significantly heavier then the gas kohler, add the wheel weights and solid tires i'm sure there is some significant counter balance...on my log splitters there is a safety check in the valves - do bobcats have something like this? or is there something wrong with this rig? it was originally owned by the city, they sold it to my boss 8 years ago with 1200 hours on it, it now has 1435 and i have receipts from the bobcat dealer going through it - and this guy was meticulous with maintenance...i can't imagine there is a problem that he wouldn't have fixed. any help would be great. thanks guys.

 

[nickblaze466]

got a hold of the dealer, said the relief just kicks in past a certain weight and the wheel weights/additional weight of that skidder should prevent it from tipping in most cases, no big deal there. he said the aux hydraulics should not always be on. aux spool may be stuck open, need to get that fixed. i've worked on log splitters quite a bit, is fixing the valve in one of these deals as easy as it is on a splitter?

 

[Tazza]

got a hold of the dealer, said the relief just kicks in past a certain weight and the wheel weights/additional weight of that skidder should prevent it from tipping in most cases, no big deal there. he said the aux hydraulics should not always be on. aux spool may be stuck open, need to get that fixed. i've worked on log splitters quite a bit, is fixing the valve in one of these deals as easy as it is on a splitter?

Hopefully its just the stick stuck in detent. Get the right lever and pull it to the left then let go, it should spring back to centre. If it does and still allows fluid to flow, it sounds like you may have a broken spring in the control block. Repairing the control block is easy, gaining access generally isn't so simple....
When its not engaged, no oil should be flowing, when it does and there is no attachment it simply goes over the relief causing extra engine load and a lack of lift/tilt power.

 

[nickblaze466]

Hopefully its just the stick stuck in detent. Get the right lever and pull it to the left then let go, it should spring back to centre. If it does and still allows fluid to flow, it sounds like you may have a broken spring in the control block. Repairing the control block is easy, gaining access generally isn't so simple....
When its not engaged, no oil should be flowing, when it does and there is no attachment it simply goes over the relief causing extra engine load and a lack of lift/tilt power.

i think i got it figured out, but man i was sweating it for a few hours there. i hate buying something and then finding out right away its messed up. on the 450, you very clearly have to push the right stick to the right to engage the aux hydros. on the 443, once you knock it into aux you have to pull it back to stop the flow. its like a switch. i must have knocked it into aux when i was getting in and out accidentally. saturday morning i got up to load her onto the trailer and take it up to the dealer and i tried just grabbing the stick and pulling it back...clicked in and the world was good.