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Author Topic: LT-40 Blade guide arm gearbox  (Read 313 times)

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Offline Dan_Shade

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LT-40 Blade guide arm gearbox
« on: June 10, 2023, 10:15:55 AM »
I'm assuming that this gearbox is on its last leg, opinions? 

Woodmizer LT40HDG25 / Stihl 066 alaskan
lots of dull bands and chains

There's a fine line between turning firewood into beautiful things and beautiful things into firewood.

Offline Magicman

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Re: LT-40 Blade guide arm gearbox
« Reply #1 on: June 10, 2023, 12:39:55 PM »
Not an actual gearbox but the motor is geared down and also there are bearings in the cogged sprockets that drive the chain.  You will need to isolate to see which is noisy.  If it’s a sprocket a good “hosing down” with a spray lube may be all that you need.
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Offline John S

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Re: LT-40 Blade guide arm gearbox
« Reply #2 on: June 15, 2023, 09:57:02 AM »
Could be a dry chain.  WM told me to lube with ATF, which I do every day of operation.
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Offline Stephen1

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Re: LT-40 Blade guide arm gearbox
« Reply #3 on: June 15, 2023, 06:16:25 PM »
I think oil it , check that it is aligned properly and keep sawing until it dies. Sounds ok to me
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