New member here and new owner of 2006 L4630 GST. I recently added a third function valve for grapple, when I connected the grapple I started having this problem. All other hydraulics work fine, are not sluggish at all. Fluid level is correct, new hydraulic filter installed after problem started but no improvement to problem. I have tried working all functions to purge air too. The machine has 700 hours Has been well Maintained.
Steering intermittent power loss
- Thread starter ATN
- Start date
North Idaho Wolfman
Moderator
Staff member
Lifetime Member
Equipment
L3450DT-GST, Woods FEL, B7100 HSD, FEL, 60" SB, 743 Bobcat with V2203, and more
No pictures at present. I installed a Summit Hydraulics kit following their instructions. After the Hurricane passes I can get some pictures and post them.
North Idaho Wolfman
Moderator
Staff member
Lifetime Member
Equipment
L3450DT-GST, Woods FEL, B7100 HSD, FEL, 60" SB, 743 Bobcat with V2203, and more
I understand what you are saying, this part of the instructions were the most confusing. The markings on the TFV are not clear. Is it possible if the lines are crossed at P and T that all of the loader functions would still work perfectly and the steering only be affected??? If I switched the lines to P and T is there a chance of damaging anything if it is correct now?
North Idaho Wolfman
Moderator
Staff member
Lifetime Member
Equipment
L3450DT-GST, Woods FEL, B7100 HSD, FEL, 60" SB, 743 Bobcat with V2203, and more
It should be stamped next to each port.
Just going by their schematic it's backwards.
And no you won't hurt the tractor if it's backwards.
And yes it could effect the steering as the pressure regulator might be jumping around.
If it's the only thing you changed and it worked fine before the install then it's more then likely got to be a plumbing issue.
Just going by their schematic it's backwards.
And no you won't hurt the tractor if it's backwards.
And yes it could effect the steering as the pressure regulator might be jumping around.
If it's the only thing you changed and it worked fine before the install then it's more then likely got to be a plumbing issue.
I completely agree, nothing changed except I added the TFV, however, I switched the lines and I’m still having steering issues. More food for thought, in the process of changing the hydraulic filter I lost about a gallon of oil but the dipstick still shows it in operating range. Is it possible to get air in the system and it only affect the steering? I even tried using the loader to raise the front wheels to work steering to the locks to bleed air (automotive background) but even without the weight load about every 5-6” Of steering wheel travel and it acts like no power steering then goes the same distance like normal. All other hydraulic functions are working perfect.
North Idaho Wolfman
Moderator
Staff member
Lifetime Member
Equipment
L3450DT-GST, Woods FEL, B7100 HSD, FEL, 60" SB, 743 Bobcat with V2203, and more
First, double check fluid levels, and cycle the steering back and forth, doesn't need to be full strokes.
Then if no improvement, remove the third function loop, so reconnect it without the third function valve and see if steering returns.
What is odd about this is that the pump that runs the steering is different than the pump running the loader and third function.
Great idea to bypass TFV and see if it solves the problem. I'll give that a try and let you know. I really appreciate your help with this, thank you so much!
