The Forestry Forum is sponsored in part by:

iDRY Vacuum Kilns


Forestry Forum
Sponsored by:


TimberKing Sawmills



Toll Free 1-800-582-0470

LogRite Tools



Norwood Industries Inc.




Your source for Portable Sawmills, Edgers, Resaws, Sharpeners, Setters, Bandsaw Blades and Sawmill Parts

EZ Boardwalk Sawmills. More Saw For Less Money!

STIHLDealers.com sponsored by Northeast STIHL


Woodland Sawmills

Peterson Swingmills

 KASCO SharpTech WoodMaxx Blades

Turbosawmill

Sawmill Exchange

Michigan Firewood, your BRUTE FORCE Authorized Dealer

FARMA


Baker Products

ECHO-Bearcat

iDRY Wood Lumber Vacuum Drying for everyon

Nyle Kiln Dry Systems






Author Topic: LT40 hydraulics not working  (Read 1099 times)

0 Members and 1 Guest are viewing this topic.

Offline Southside

  • Administrator
  • *****
  • Posts: 5770
  • Age: 47
  • Location: Wilsons (Dinwiddie County), VA
  • Gender: Male
  • Have a plan to saw every log you meet.
    • Share Post
Re: LT40 hydraulics not working
« Reply #20 on: November 01, 2019, 04:35:49 PM »
Was your jumper wire considerably smaller than the wire feeding the hydraulic pump?  If so it was just pulling too many amps through it.
Franklin buncher and skidder
JD Processor
Woodmizer LT Super 70 and LT35 sawmill, KD250 kiln, BMS 250 sharpener and setter
Riehl Edger
Woodmaster 725 and 4000 planner and moulder
Enough cows to ensure there is no spare time.

Offline YellowHammer

  • Senior Member x2
  • *****
  • Posts: 4617
  • Age: 55
  • Location: New Market, Alabama
  • Gender: Male
  • Take Steps to Save Steps
    • Share Post
    • Hobby Hardwood Alabama
Re: LT40 hydraulics not working
« Reply #21 on: November 01, 2019, 04:53:08 PM »
Iím working from memory of several years ago, but...
There is a (I think) red trigger wire going to the solenoid (itís really a car starter relay) and it activates the electromagnet and pulls it into position to engage the main power contacts to energize the pump.  The trigger wires are smaller than the main feed wires so they are easy to find going into the solenoid.  With the hydros off, the trigger would read zero, with the hydros calling for active it should read 12 volts, if my memory serves.  If you have 12 volts going into the solenoid on the input side in the main feed line, and 12 volts on the trigger wire when commanding hydros, and zero or most likely a low voltage coming out of the solenoid, say 4 volts or so because of a poor or partial contact, then itís the solenoid.  You should also hear it click when you activate the trigger wire.  I had to replace 2 on my LT40.  They are just starter motor relays for automobiles.  

When you jumped with the shunt wire, it bypassed the solenoid and full power draw caused the wire to shunt to burn because itís not rated for the high current that the motor of the hydros use.  So that says the open circuit is at the solenoid, so it could and probably is, the main contractors not closing adequately. However, check the trigger wire also, if there is no signal to the trigger the solenoid wonít be calling to close, and itís not the problem.  There would be an issue with the trigger circuit.    

They are pretty cheap if I remember correctly, and I bought two, one as a spare, and eventually used it also.  You could also go to your local auto parts store and find a similar item.  
HobbyHardwoodAlabama.com

Offline Magicman

  • Senior Member x2
  • *****
  • Posts: 39167
  • Age: 76
  • Location: Brookhaven, MS
  • Gender: Male
  • A "Traveling Man"
    • Share Post
    • Knothole Sawmill
Re: LT40 hydraulics not working
« Reply #22 on: November 01, 2019, 08:34:59 PM »
Your voltmeter will verify whether the "trigger" wire is being energized.  Get your replacement 200amp solenoid from Wood-Mizer.  I always keep a couple of spares.  Both of those solenoids are the same.
Knothole Sawmill, LLC     '98 Wood-Mizer LT40SuperHydraulic   WM Million BF Club Member   WM Pro Sawyer Network

Never allow your "need" to make money to exceed your "desire" to provide quality service.....The Magicman

Offline Bandmill Bandit

  • Senior Member x2
  • *****
  • Posts: 2206
  • Age: 63
  • Location: Ponoka Alberta, Canada
  • Gender: Male
    • Share Post
Re: LT40 hydraulics not working
« Reply #23 on: November 01, 2019, 08:45:39 PM »
Dont jump across the solenoid. Put power to the switch terminal on the solenoid. (probably and 1/8th or 3/16ths diameter stud) it is a small terminal that will likely have a red or black #14 or 12 wire going to it from the key switch. 

Disconnect that wire and then jump 12 volts to that small terminal from the hot side of the solenoid. You can check that terminal with a voltage meter too, and if there is no voltage there your back power supply to/ from key. You will hear the contacts click closed when you apply power to this terminal IF the solenoid is working.  Can do it with about a 6 inch piece of wire. No clicky No worky! Need new solenoid.    
If you ain't livin on the edge you are takin up way to much room. Of course at my age if I get too close to that edge any more theres a good chance I may fall off.
2001 Dodge 1500 4x4. 2018 F150
2007 Woodmizer LT40HDG28 almost Super
2 Logrite 36 inch cant hooks and a bunch of stuff I built myself

Offline terrifictimbersllc

  • Senior Member x2
  • *****
  • Posts: 4825
  • Age: 65
  • Location: Mystic, CT
  • Gender: Male
    • Share Post
    • Terrific Timbers LLC
Re: LT40 hydraulics not working
« Reply #24 on: November 01, 2019, 10:12:52 PM »
Pretty sure there is a 15a breaker In between the key switch ACC terminal and the little 12v post on the solenoid. Maybe one of the 5 that are right under the controls.
DJ Hoover, Terrific Timbers LLC,  Mystic CT Woodmizer Million Board Foot Club member. 2019 LT70 Super Wide,  Logrite fetching arch, WM BMS250 sharpener/BMT250 setter.  2001 F350 7.3L PSD 6 spd manual ZF 4x4 Crew Cab Long Bed

Offline Magicman

  • Senior Member x2
  • *****
  • Posts: 39167
  • Age: 76
  • Location: Brookhaven, MS
  • Gender: Male
  • A "Traveling Man"
    • Share Post
    • Knothole Sawmill
Re: LT40 hydraulics not working
« Reply #25 on: November 01, 2019, 10:22:05 PM »
Even of the solenoid clicks, there is no guarantee that it is making electrical contact. 
Knothole Sawmill, LLC     '98 Wood-Mizer LT40SuperHydraulic   WM Million BF Club Member   WM Pro Sawyer Network

Never allow your "need" to make money to exceed your "desire" to provide quality service.....The Magicman

Offline brooksmill

  • member
  • *
  • Posts: 47
  • Age: 65
  • Location: West Virginia
  • Gender: Male
  • retired!
    • Share Post
Re: LT40 hydraulics not working
« Reply #26 on: November 03, 2019, 02:23:17 PM »
Doing more testing. With key sw on I have 12v on bottom red wire on solenoid. Nothing on wire going to spring loaded block. Will call woodmizer tomorrow and probably order solenoid. Unless someone here has different ideas.

Offline Bandmill Bandit

  • Senior Member x2
  • *****
  • Posts: 2206
  • Age: 63
  • Location: Ponoka Alberta, Canada
  • Gender: Male
    • Share Post
Re: LT40 hydraulics not working
« Reply #27 on: November 03, 2019, 04:15:34 PM »
I will assume you mean the little #14 red switch wire is hot at solenoid with key in the on position.

This would indicate a failed solenoid. 

Lynn is correct on the click sound. It doesn't mean the solenoid is working.
If you ain't livin on the edge you are takin up way to much room. Of course at my age if I get too close to that edge any more theres a good chance I may fall off.
2001 Dodge 1500 4x4. 2018 F150
2007 Woodmizer LT40HDG28 almost Super
2 Logrite 36 inch cant hooks and a bunch of stuff I built myself

Offline brooksmill

  • member
  • *
  • Posts: 47
  • Age: 65
  • Location: West Virginia
  • Gender: Male
  • retired!
    • Share Post
Re: LT40 hydraulics not working
« Reply #28 on: November 03, 2019, 04:36:44 PM »
thanks guys, will let you know the outcome

Online WV Sawmiller

  • Senior Member x2
  • *****
  • Posts: 7219
  • Age: 66
  • Location: Hinton WV
  • Gender: Male
    • Share Post
    • Green's Sawmill Services
Re: LT40 hydraulics not working
« Reply #29 on: November 03, 2019, 05:23:40 PM »
   If you by-pass it do your hydraulics work?
Howard Green
WM LT35HDG25(2015) , 2009 4wd Dodge PU, Kawasaki 650 ATV, Sthil 440 & 441, homemade logging arch (w/custom built rear log dolly), JD 750 w/4' wide Bushhog brand FEL

Dad always said "You can shear a sheep a bunch of times but you can only skin him once"

Offline brooksmill

  • member
  • *
  • Posts: 47
  • Age: 65
  • Location: West Virginia
  • Gender: Male
  • retired!
    • Share Post
Re: LT40 hydraulics not working
« Reply #30 on: November 03, 2019, 06:20:33 PM »
wv sawmiller YES


Share via delicious Share via digg Share via facebook Share via linkedin Share via pinterest Share via reddit Share via stumble Share via tumblr Share via twitter

xx
lt40 hydraulics stop working

Started by widfam on Sawmills and Milling

3 Replies
604 Views
Last post December 27, 2015, 05:06:37 PM
by Chuck White
xx
Lt70 hydraulics quit working

Started by just_sawing on Sawmills and Milling

5 Replies
903 Views
Last post February 13, 2013, 07:48:26 PM
by just_sawing
xx
Hydraulics on LT40

Started by POSTON WIDEHEAD on Sawmills and Milling

46 Replies
4748 Views
Last post August 29, 2016, 09:11:18 PM
by paul case
xx
LT40 Hydraulics

Started by nas on Sawmills and Milling

44 Replies
9427 Views
Last post March 29, 2013, 07:32:01 AM
by Magicman
 


Powered by EzPortal