Aux Hydraulics not working B7100 HST

OrangeB7100

New member
Premium Member

Equipment
1990 B7100
Dec 19, 2022
5
2
3
Winfield, IL
Bought the tractor with a rear pto snowblower. Previous owner used aux hydraulic to turn the chute, that worked fine. Two lines are available each with a lever.
Included is a homemade implement. A scraper blade with a piston to raise and lower and another to tilt the blade forward and back. Used it to clean his culvert ditch.

When connected neither ram will move. Tried moving hoses to each connection and no change. 3ph works fine moving up and down.
Is it the rams? Am I missing a switch I should be turning?
 

Attachments

North Idaho Wolfman

Moderator
Staff member
Lifetime Member

Equipment
L3450DT-GST, Woods FEL, B7100 HSD, FEL, 60" SB, 743 Bobcat with V2203, and more
Jun 9, 2013
28,286
4,853
113
Sandpoint, ID
There is a much better way to hook up the aux valve, that wouldn't involve the three point operations.
There is a plate in front of the brake pedals that you can tap into the hydraulic system.
Hooking up there would give you full control of the three point and aux control.
Torch makes the adapter:
 
Last edited:
  • Like
Reactions: 1 users

North Idaho Wolfman

Moderator
Staff member
Lifetime Member

Equipment
L3450DT-GST, Woods FEL, B7100 HSD, FEL, 60" SB, 743 Bobcat with V2203, and more
Jun 9, 2013
28,286
4,853
113
Sandpoint, ID
Read some more and figured out how to make it work. https://www.orangetractortalks.com/forums/threads/auxiliary-hydraulic.15413/post-119034

Hold the 3ph in the lift position. Then use the aux controls. As you can see in the pic both rams are dual acting.
Ok looking at this picture of the crazy back blade, it finally dawned on me why I initially thought not a good idea.

There is no float to that back blade or to the three point! BAD JUJU
What happens with that type of setup is the first semi solid object that you hit it transfers all the force right to the three point and three point case, and snap you're now looking at a thousand dollar repair!

When you use the three point blade as intended it will rise when you hit a solid object eliminating the huge force feedback.
 
  • Like
Reactions: 1 user

torch

Well-known member

Equipment
B7100HSD, B2789, B2550, B4672, 48" cultivator, homemade FEL and Cab
Jun 10, 2016
2,583
831
113
Muskoka, Ont.
Worth the wait! ;)
Actually, if he needs one in the original B7100 format (2 tapped holes on the face ) rather than the universal (4 unused holes with plugs) ASAP, I could whip one out Monday when I get home again. I have the blocks all cut and milled to size; I just have to finish drilling and tapping all the holes.
 

North Idaho Wolfman

Moderator
Staff member
Lifetime Member

Equipment
L3450DT-GST, Woods FEL, B7100 HSD, FEL, 60" SB, 743 Bobcat with V2203, and more
Jun 9, 2013
28,286
4,853
113
Sandpoint, ID
Well he hasn't been back on since Wednesday???
Yes he would need the 2 hole plate if he did it.
 
Last edited: