were in the process of trying to fit a regular size john deere backhoe attachment onto the back of my fathers 230 timberjack skidder. the problem that we have is where and how to run the hyraulic pump. the dealer says that out 30 GPM is too big to run off the front of the motor and we run the risk of snapping the crank shaft off. there is very little room on the side of the trans to run a PTO too. we were thinking about running it with a v belt arrangement or chain drive coming off the trans tailshaft. would the belts provide enough grip to drive the pump? how fast would the pump have to run to get the needed flow? any help would be great
backhoe attachment on skidder problem
- Thread starter hoyt351w
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J_J
Super Star Member
- Joined
- Sep 6, 2003
- Messages
- 18,952
- Location
- JACKSONVILLE, FL
- Tractor
- Power-Trac 1445, KUBOTA B-9200HST
This is a 20 GPM clutch pump. Snap the crankshaft. I doubt it.
https://www.surpluscenter.com/item.asp?UID=2348030506173078&item=9-1738&catname=hydraulic
If you need 30 GPM, the pump will need about 51 HP.
3.5 cu in, at 2500 psi and turning 2500 rpm.
If you have an auxiliary shaft, you could possibly make it work.
https://www.surpluscenter.com/item.asp?UID=2348030506173078&item=9-1738&catname=hydraulic
If you need 30 GPM, the pump will need about 51 HP.
3.5 cu in, at 2500 psi and turning 2500 rpm.
If you have an auxiliary shaft, you could possibly make it work.
kenstrac
Platinum Member, RIP
I think the first thing we need to know is the backhoe attachment open or closed system,is the 30 gal pump off a backhoe if so what model?
kenstrac
Platinum Member, RIP
Most JD backhoes used a closed system and more than likely you will need more than the pump you have,take a pic of backhoe and pump and model # of the hoe or what TLB it came off of.
aczlan
Good Morning
- Joined
- Mar 7, 2008
- Messages
- 16,985
- Tractor
- Kubota L3830GST, B7500HST, BX2660. Formerly: Case 480F LL, David Brown 880UE
Where are you getting the 30gpm number from? How big is this backhoe attachment? For comparison, a John Deere 110TLB (43hp engine) only uses 16.3 gpm to run the backhoe portion (source)
Aaron Z
Aaron Z
kenstrac
Platinum Member, RIP
The plate if it has one should be on the valve plate cover if not take some pic's of the BH and the pump,do you know what the tractor model it came off of 300-400-500-etc JD ?
