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Author Topic: Lt40 hydraulic problem  (Read 1146 times)

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Offline Mbreaux

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Lt40 hydraulic problem
« on: January 15, 2018, 12:53:27 PM »
Hydraulics work and doesn't lose power . but will work at correct speed then all of a sudden run slow. That may last a minute or so then goes back to the correct speed. I've changed brushes in the motor.

Offline Dave Shepard

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Re: Lt40 hydraulic problem
« Reply #1 on: January 15, 2018, 12:55:54 PM »
Make sure the contact strip is clean and adjusted.
Wood-Mizer LT40HDD51-WR Wireless, Kubota L48, Honda Rincon 650, TJ208 G-S, and a 60"LogRite!

Offline Mbreaux

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Re: Lt40 hydraulic problem
« Reply #2 on: January 15, 2018, 01:03:57 PM »
I did not mention i did that and changed the switch that activates hydraulics. Also checked fluid level. A few months ago I changed brushes on electric motor.

Offline paul case

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Re: Lt40 hydraulic problem
« Reply #3 on: January 15, 2018, 01:07:08 PM »
Check those battery cables too. They can be failing to contact intermintenly, causing your pump to only run from the alternator.

PC
life is too short to be too serious. (some idiot)
2013 LT40SHE25 and Riehl edger,  WM 94 LT40 hd E15. Cut my sawing ''teeth'' on an EZ Boardwalk
sawing oak.hickory,ERC,walnut and almost anything else that shows up.
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Offline Mbreaux

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Re: Lt40 hydraulic problem
« Reply #4 on: January 15, 2018, 01:16:00 PM »
Will do . does it sound like electrical and not that the pump is going out.

Offline POSTON WIDEHEAD

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Re: Lt40 hydraulic problem
« Reply #5 on: January 15, 2018, 04:44:56 PM »
could it be the cold weather?
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Offline Mbreaux

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Re: Lt40 hydraulic problem
« Reply #6 on: January 15, 2018, 05:35:19 PM »
I've run it in warm and cold weather. Its been going on for a couple weeks .

Offline Magicman

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Re: Lt40 hydraulic problem
« Reply #7 on: January 15, 2018, 07:44:51 PM »
You need a good voltmeter to determine whether you are loosing voltage to the pump motor.  Remember that of the circuit is the ground which is just as important as the "hot" lead.
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Offline pineywoods

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Re: Lt40 hydraulic problem
« Reply #8 on: January 15, 2018, 08:49:02 PM »
Contact brush under the bottom of the frame rail..If that loses contact with the frame, the hydraulic motor will return to the neg battery post through the head support rollers. Not a very good electrical connection plus it's rough on the cam follower bearings...
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Offline Mbreaux

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Re: Lt40 hydraulic problem
« Reply #9 on: January 15, 2018, 09:01:49 PM »
I will check those tomorrow and see if it helps.

Offline scully

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Re: Lt40 hydraulic problem
« Reply #10 on: January 17, 2018, 01:11:20 AM »
sounds like the contact strip and shoe to me I would really check that closeley .
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Offline slider

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Re: Lt40 hydraulic problem
« Reply #11 on: January 17, 2018, 08:25:56 AM »
Also check the brush springs in the motor.
al glenn

Offline sparks

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Re: Lt40 hydraulic problem
« Reply #12 on: January 19, 2018, 05:35:35 PM »
Does it have 2 pumps or one?

If 2 one of the solenoids could be dropping out and only running one pump
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Offline slider

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Re: Lt40 hydraulic problem
« Reply #13 on: January 19, 2018, 05:41:03 PM »
When that happen to me it pushes oil out the vent on the other pump.
al glenn


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