I have a 2008 b7800 tractor with a HST and bh75 backhoe I just bought it used with 390 hours and everything operates great but when it sits overnight the backhoe moving parts all drift down with gravity. Is this normal?
Nope its not normal. You make have to repack and replace some seals on the cylinders. On a side note its not safe to leave them up, cause kids will be kids and if you have any they tend to want to play on equipment and I'd hate to see a kid get crushed and killed by a falling boom.
May not be normal but as long as it's not leaking fluid I wouldn't worry about it. I do agree with Eric about setting the implements on the ground when it's parked though.