Hydraulic System Warning Lamp

[ladracer]

My 2006 DK35 with 212 hours has a recurring problem.

The Hydraulic System Warning Lamp continues to repeatedly come on after only an hour or so of work. I can be bush hogging or using the loader or the backhoe or even just the rake, matters not.

The problem first began when I ran over a stick and pulled one of the wires lose from the sensor under the tractor. It seemed repaired when I reattached the wire (that is the light went out). But since then, and this may only be coincidence, the light coming on after what I believe to be not much work.

I reviewed the earlier posting of someone having the same problem for any ideas and have tried everything I think. Please see post

http://www.tractorbynet.com/forums/...2.html?highlight=hydraulic+fluid+warning+lamp


What I have tried to date:

1. Thoroughly cleaning the radiator screen and fins by water and air and soft-brush.
2. Keeping higher RPMs 2200-2500 to keep fan running and not lugging the machine.
3. Changed the motor oil, hydraulic fluid, oil filter , and hydraulic filter.
4. Made sure the A-B remote is in neutral (visual inspection only)
5. Made sure fluids are full, and again they were recently changed (2 tractor hours ago)

I am at a loss, only thing I can figure is that I live in a very dusty area (North Florida) and that I will be forced to either run the machine an hour at a time or ignore the lamp, neither of which seem appealing. What say you guys? By the way what happens if one does continue to run the machine when the fluid gets hot enough for the lamp to come on? (Decreased performance, permanent damage, loss of hair)

Thanks ahead of time.

 

[Gittyup]

It is very seldom ever a coincidence on these things.

Since you've done all the obvious things, I'd still be looking at those pulled wires again. I'd go back and reattach that wire a second time. It could also be that it damaged the wire internally when you got it caught. Did you check the other end of the wires too? If the mating connector was a locking type, you may have damaged the other connector side as well. If the connector is circuit card mounted, that might explain why it fails after warm-up. If it is indeed circuit card mounted, reflow the solder joints on the board where the connector is attached. This might help.

 

[IslandTractor]

I'm with Gittyup. There may be some hidden damage to those wires and connectors that got yanked around the first time.

 

[JoelD]

NOt sure on the sending unit, but another thought would be to use your volt meter and see what kind of a reading you are getting from the unit compared to what you should be getting. Sounds as if you may have broken whatever sending unit the wires were hooked into (I think this is saying the same as prior post). If you had a remote sensing temperature gun, you could use to maybe see how hot the oil's running when light is on and see if you'r getting a false positive.). Agreed with others, to coincidental.

Good luck.

Depending on cost, I would just swap out the sending unit its self.

Joel

 

[ladracer]

I really appreciate all the helpful suggestions thus far. I went back to the suspect wire removed it, visually inspected it then reattached it and the other one this time using dielectric grease (couldn't hurt)

I also tightened down the little Philips head screw on the end of the sensor unit.

Used the tractor for an hour and NO WARNING LAMP. Mind you the fluid became very warm to the touch, but no warning lamp. Very good news indeed. However, to be completely truthful I am not the best judge of time when I am on my tractor. I seem to go into some weird time warp where minutes become hours.

The true test will be when I use the tractor for a longer period of time. I will keep you posted. Many thanks.

A few more questions while I have your attention.

1. What is the temperature threshold for the sensor unit? (When should it begin to signal?)

2. How long should one be able to run there tractor in Florida's summer heat (90-95 degrees) without having to shut it down due to hydraulic fluid overheating?

Thanks

 

[JoelD]

I think the answer to number two is clear, at least to me, until you run out of diesel, and that would be the same answer wether your diesel tank on the tractor was 5 or 100 gallons.

The first question is a good one, to others, is there a technical help line at Kioti for questions like this, or just start at corporate? Would expect dealer to have access to such information as well.

Joel

 

[NY_kioti_sales]

you may have damaged the sensor when you yanked the wires off.

 

[NY_kioti_sales]

one other question? Did you pull the wire off the vacuum sensor or the temperature sensor?

I do not see a temp or vacuum spec in the service manuel, but constant use should not be a issue. Just double checking - be sure your remote valve is not engaged creating excess heat.

 

[ladracer]

GOOD news. It appears you guys were right. After reconnecting the wire with dielectric grease and tightening the screw on the sensor, the problem seems to have been solved. Thanks so much for the quick replies.

 

[Gittyup]

glad all is well again.