weak fel

[Tom_W]

I have a 1914 tlb that I have wondered if I am getting all the power I should be getting from it. I get about 1/3 to 1/2 of a bucket of dirt and it barely curls back and it must be curled all the way back for the arms to lift fully. The hyd bypass on the tractor is all the way up. My question is the adjustment on the loader controls. What is this for?

 

[Tom_W]

Here's a pic of the tractor bypass valve.

 

[DK45C_Dave]

Hi Tom,
In the picture I believe you show the bypass valve for the tractor. I don't know if they are similar, but the DK 35 bypass for the loader is right on the top of the joystick valve. It looks like a slotted screw with a lock nut next to the valve body. Loosen the lock, turn the screw in a round, and see if that is enough. Be sure you have plenty of weight on the rear of the tractor before you make any adjustments unless your are looking for a rodeo. Good luck.
Dave

 

[polecat]

am having the same problem with mine but dont dare turn anything up because 2 of the rams r leaking and have blown the glands out...will evintually git a better designed set of rams but for now jist prayin they hold together..very poor design on the rams..the only thing that holds the glands in is an inside c clip and they jist keep on tearing out the inside groove and blowing out completely /forums/images/graemlins/confused.gif /forums/images/graemlins/confused.gif /forums/images/graemlins/confused.gif

 

[Tom_W]

</font><font color="blue" class="small">( Loosen the lock, turn the screw in a round, and see if that is enough. Be sure you have plenty of weight on the rear of the tractor before you make any adjustments unless your are looking for a rodeo. )</font>

Ok which way, in or out? As far as weight goes, I have the backhoe on most of the time. No leaks so far any where on the tractor.

 

[depratt_equip]

What model loader do you have on that? We haven't seen any problems with the KL102 Loaders or Rhino 2406s.

 

[DK45C_Dave]

My guess is in. You will be able to tell after the first turn. Make small adjustments and test after each round or half round. I would stop once the bucket will pick up a slightly rounded bucket full of dirt. If your bucket is oversize, like a material bucket, less than level full would be plenty. Please be advised, I'm not a real mechanic, but do do know the location of several 'Holiday Inn Express's'.

 

[nailerguy]

Dave is right, clockwise to increase pressure and lifting power and counter clockwise to reduce the pressure and lifting power. I am surprised that it is that far out of adjustment, normally TLB's are set higher than standard tractors due to the weight (ballast) of the Backhoe.

Start out with 1 full turn clockwise, this will make a substantial difference in curling and lifting power. If you need more, go 1/4 to 1/2 a turn at a time until you are satisfied. Try not to go to far as you will cause other problems such as a bent bucket or blown rod seals.

If you have a quick attach loader, a simple pressure tester can be made from a 3000 psi guage, a short piece of hydraulic hose which should also be rated at 3000 psi working pressure and a hydraulic quick coupler that matches what you have on the tractor.

Plug the test gauge in say the port that raises the loader, start the tractor and with the loader completely disconnected from the tractor, pull back on the joystick slowly (like you are going to raise the loader) until max pressure is seen on the gauge. Compare this to the manufacturers recommended pressure settings and adjust the laoder relief valve as necessary.

Good Luck /forums/images/graemlins/cool.gif
Nailerguy

 

[DK35vince]

On my DK 35 turning the relief screw 1/8 to 1/4 turn clockwise increased pressure approx. 100 PSI.
My opinion is you should have a pressure guage when adjusting the relief valve to give you an idea where you are on pressure to avoid overadjustment and possible damage to the system.

 

[DK45C_Dave]

My DK35 needed a little boost when I got it. My dealer said it should not happen, but that occasionally adjusting the pressure relief on a loader is overlooked during setup, usually when 2 people are working on it and each thinks the other took care of it.

Most CUT's now have so much hydraulic power that setting bypass pressure is a safety issue, for both the operator and the tractor components, instead of a capacity issue.