Question regarding L4150 Hydro light on dash

   / Question regarding L4150 Hydro light on dash #1  

jms13

Bronze Member
Joined
Feb 22, 2015
Messages
66
Location
Kansas City MO
Tractor
Ih 656,M95S,L4150
I have just a quick question regarding the hydro light on the dash of my L4150.
I just received my tractor from the dealership, with a complete oil/filter and hydro fluid/filter change, now the hydro light has come on. Spoke to the dealer about it, they sent me a new filter, but stated I should just drive it for a while
that it more than likely has air in the filter and the sensor is thinking that it's clogged, and it should work it self out.
Not sure how long I should use the tractor before thinking about changing the filter. Dealer seems to be an upstanding service company and does lots of business, so I really have no reason not to believe what they say.
Just wondering seeing that I just got the tractor..
TIA
Jeff
 
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   / Question regarding L4150 Hydro light on dash #2  
If the rpm is lowered to idle does the light go out? On my L5450 (nearly identical) the light comes on at startup if it's cold out. (like 15 degrees) It goes out in a couple minutes but may come on again for a short time if I rev it up. One thing to try is adding 3 or 4 quarts of hydraulic oil to the transmission. The added depth may keep the filter from sucking air bubbles. The fluid they filled it with may be slightly heavier than what was in it before. Or maybe the filter they installed has slightly more flow resistance.
 
   / Question regarding L4150 Hydro light on dash
  • Thread Starter
#3  
Temperature was around 32 windy and rainy. Only got to drive around the yard a couple of times. Fluid is just above the bottom line. They used Kubota udt.
 
   / Question regarding L4150 Hydro light on dash #4  
Does the light stay on or eventually go out?

Edit: (see post #6 below)
 
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   / Question regarding L4150 Hydro light on dash
  • Thread Starter
#5  
It has an oil light left side of easy checker, it stays on. It was the only filter they had left, been sitting for a while. He said they ordered two more just to have on hand. They sent me one of the new ones.
 
   / Question regarding L4150 Hydro light on dash #6  
It has an oil light left side of easy checker, it stays on.....
Ok that's the same setup as my L5450 has. There are two switches on the hydraulic pump that control that light, one for vacuum and one for temperature (see attachments). Make sure the wires and plugs are in place and ok. Seems fishy it has a new symptom after somebody changed the oil?
 

Attachments

  • easy checker suction light.pdf
    233.3 KB · Views: 192
  • L4150 switches.pdf
    53.5 KB · Views: 193
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   / Question regarding L4150 Hydro light on dash
  • Thread Starter
#7  
I'll check the plugs. I honestly don't think they had a new filter. The one that is on it looks brand new, seeing they ordered 2 new ones, and sent me one of them. But who knows. I think I'll run it for a little while, I know the fluid is new if it doesn't go out in a few hours, I'm going to change filters. Does that seem reasonable?
 
   / Question regarding L4150 Hydro light on dash #8  
If the loader goes up and down ok, there's no need to worry about the light.

The pump can be damaged if it doesn't get oil, but normal loader motion is proof it's getting oil. With the tractor at high idle in neutral, raise and lower the loader several times. Cycle the bucket curl too. Maybe that will burp it and shut off the light.
 
   / Question regarding L4150 Hydro light on dash
  • Thread Starter
#9  
Loader seemed to be fine, it went up and down, like I said I really didn't get to do much, because of weather, just trying to be proactive, seeing I just got it. It's 2 1/2 hours away, so I can't just jump on it and try everything. Should be going in a week so hopefully I can put it to work and straighten something out while I'm there.
 
   / Question regarding L4150 Hydro light on dash #10  
Sorry I didn't realize the machine is 2 1/2 hours away. Take care, Dick B
 

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