disapointed with BH77 lifting power

[jokergerm]

I know backhoes are not meant to lift but i tried to rip a 4x4 fence post out of the ground with the backhoe and it would not do it, and it only had 3 bags on concrete in the hole. I figured it would lift it right out

my 5000 lb fork lift lifted 4 at once out of the ground.

weak

 

[ericher69]

What part of the hoe was doing the lifting?

Maybe a different approach would work better

 

[magicheater]

How far out was the boom extended?

 

[Verticaltrx]

You'd be amazed a how much force it can take to pull a fence post out of the ground, especially ones that are driven, or set in concrete. I've had some 5" posts that I've driven that the loader on our M9540 couldn't lift out. It took the 3pt hitch on that tractor (which lifts over 7000lbs) to get the post out.

You BH77 probably only has a craning (lifting) ability of 500lbs or less, so you really aren't putting much force on the post. Pulling the post fore and aft and side to side will help loosen it a lot, sometimes even enough to pull it out by hand. Either that or it will break off, lol.

 

[jokergerm]

How far out was the boom extended?

like 3/4 of the way I am a novice operator so i could have been doing it all wrong i just grabbed the end of the 4x4 and lifted up

 

[ericher69]

By grabbed do you mean with a thumb?

Using a chain down low and curling with bucket would b more efficient

Side to side/back in forth then curl

Hope this helps

 

[jokergerm]

i think im just excpeting to much from the BH77, its the only backhoe i have used before but i thought it would have more power than it does.

I have the 16" bucket and i am digging 40 deet of trenches for my irrigation in my pasture and its a struggle. Maybe i am doing something wrong but it is just slow going seems to have a total lack of power when doing anything other than curling the bucket.

Use your arm for an example. If you stick you arm straight out in front of you and use your hand as the bucket and tilt your hand down at a 90 degree angle put your arm and hand down towards the dirt and try to pull back towards your self bending you elbow trying to pull the dirt towards yourself it will not do it, its just stops.

i will try to get some video tommorow posted up to see if im just retarded and digging wrong or if i have a low pressure issue or something

 

[rswyan]

Maybe i am doing something wrong but it is just slow going seems to have a total lack of power when doing anything other than curling the bucket.

It may have restriction orifices in some of the lines where they connect to the control valve to slow them down - my BH4690B did on both the swing circuit and the dipperstick/crowd circuit. They would account for the slowness (but not lack of power)

IIRC, I removed the one on my dipperstick/crowd circuit, swing was fast enough for me even with the orifice in there.

Kubota puts these in there for safety reasons.

The bucket curl is the strongest circuit, the crowd/dipperstick is next, and the boom (raise/lower) is the weakest - factor that into your digging technique. Reading the manual (on technique) might be worth a few minutes of your time.

 

[arsenix2001]

I owned a kx 121 for 5 years, which has substantially more breakout,( in the nieghborhood of 10k i believe). It would struggle with fence posts that werent even cemented sometimes. Static holding pressure of soil can be quite impressive. Loosining surrounding soil is key

 

[MessickFarmEqu]

. Maybe i am doing something wrong but it is just slow going seems to have a total lack of power when doing anything other than curling the bucket.

Thats pretty much normal, its not the geometry of a backhoe works. You use the bucket to do the digging, and the boom to crane the dirt out out of the hole. You can't do much useful digging with the dipper until you get good at curling the bucket and pulling back at the same time. It will come.