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Author Topic: skidder fires !!!!!!!!!???  (Read 1638 times)

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Offline Coconut

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skidder fires !!!!!!!!!???
« on: November 08, 2017, 08:28:17 PM »
I hear from time to time of skidders catching fire.Wondering what would be some of the main causes .Maybe some fires can be prevented . Any thoughts?

Offline bushmechanic

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Re: skidder fires !!!!!!!!!???
« Reply #1 on: November 08, 2017, 08:48:37 PM »
Oh yes they most certainly can be prevented. I lost one machine when the battery cables arced out underneath the seat of a C5 Treefarmer, caught the oil/tree debris by the transfer case on fire, fire extinguisher was corroded in the pin and didn't work so the machine burnt. Debris will build up on a exhaust manifold and catch fire when the engine is pushed hard in hot weather. Hydraulic hoses can burst and spray on manifolds igniting the oil which quickly spreads to other sources of material. Oh I could write a book on this!

Offline Stuart Caruk

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Re: skidder fires !!!!!!!!!???
« Reply #2 on: November 08, 2017, 08:50:10 PM »
Poor maintenance. Let enough wood debris, leaves, etc. accumulate inside the engine compartment, add some oil from hydraulic or engine leaking into the mess throw in some hot weather to dry it all out, then add an exhaust leak or a shorted battery cable...
Stuart Caruk
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Offline ohiowoodchuck

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Re: skidder fires !!!!!!!!!???
« Reply #3 on: November 08, 2017, 08:56:23 PM »
Yep, when I bought my 440, I cleaned out over 75 lbs of debris from the belly pans. I cleaned out everything to prevent this.
Education is the best defense against the media.

Online mike_belben

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Re: skidder fires !!!!!!!!!???
« Reply #4 on: November 08, 2017, 09:04:57 PM »
With how much oil my dozer leaks im betting theres gonna be 300lbs of flamable clay shmeg under there when i finally pull the pan.  Not very eager about that. 
Revelation 3:20

Offline U.P mich

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Re: skidder fires !!!!!!!!!???
« Reply #5 on: November 08, 2017, 09:23:25 PM »
I had a timber pro harvester once and the exhaust was literally 3 inches from one of the fuel lines .  Plastic line!!!  Designed this way from factory . And the exhaust sprung a leak right toward the fuel line melting the plastic which sprung a fuel leak stalling the engine and starting a fire at the same time.  I got the fire out unluckily. Lol. As I had to replace a lot a lot of things to get it back going.  Would have costed less to let it burn probably.  But after the fire and the rehab it was a good machine for over 2 years when I traded it in.  I did build a metal guard reinforced with anti flam high heat exhaust wrap to prevent that from happening again.   2 years later so many timber pros burned that the insurance companies quit insuring them until timber pro completely re designed the machine. And that's what you see today cab on opposite side . Engine compartment completely different etc . 

Offline coxy

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Re: skidder fires !!!!!!!!!???
« Reply #6 on: November 09, 2017, 06:58:36 AM »
the out board brakes are the worst  I took the small plate off the belly pan where the caliper is on my 518 now no crap builds up and so far no fires in 6 years  8)

Offline Lumberjohn

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Re: skidder fires !!!!!!!!!???
« Reply #7 on: November 09, 2017, 07:31:15 AM »
Yes, the couple I know about was from running with the e-brake on.

Online Crusarius

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Re: skidder fires !!!!!!!!!???
« Reply #8 on: November 09, 2017, 08:12:50 AM »
What most ppl don't understand is what happens after you shut the engine down. It does not immediately start to cool. the temperature actually continues to rise until you have reached thermal saturation. The reason for this is when the engine is running you have fluid movement. The moving fluid does not transfer the heat to the surrounds as readily as it does when you shut the engine off and now all that hot liquid stops moving.

During some of my testing I have had engine temperatures rise 30-40 degrees celsius within 10 minutes of shutdown. Some pretty crazy stuff. Add that temperature increase to everything that was mentioned above and you have a ticking time bomb.

I saw this really sweet fire suppression system at the boonville show. I just can't remember the name of it but it looks like a really sweet system. Many insurance companies are offering discounts if your machine is setup with it.
I knew what I thought I meant.

Offline dgdrls

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Re: skidder fires !!!!!!!!!???
« Reply #9 on: November 09, 2017, 08:46:34 AM »
crusarius makes a great point as do others, you have to expel or shield the heat,   take away the fuel sources by maintenance, isolation and good old fashion recognition of bad design or poor routing of lines.

D

Offline quilbilly

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Re: skidder fires !!!!!!!!!???
« Reply #10 on: November 09, 2017, 09:40:31 AM »
Loose wire on the alternator sparked caught the debris on fire, the extinguisher wasn't charged so I lost the skidder. It was a Clark with a Detroit. Also the brakes on Clark's, gotta be careful
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Offline Autocar

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Re: skidder fires !!!!!!!!!???
« Reply #11 on: November 09, 2017, 03:16:03 PM »
Brake caliper dragging on my C7 started on fire from friction leraves ect. Grabbed the fire extingriture and put it out everything was ok. But scared the crap out of me.
Bill

Offline Bert

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Re: skidder fires !!!!!!!!!???
« Reply #12 on: November 09, 2017, 04:04:01 PM »
I had a carrier bearing for the driveshaft go south and started a fire in the leaves and grease. I used up my water for the day real quick. I think the moral of the story is keep the machine clean.
Saw you tomorrow!

Online Crusarius

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Re: skidder fires !!!!!!!!!???
« Reply #13 on: November 09, 2017, 04:17:18 PM »
and carry fire extinguisherS and don't forget to inspect them once in a while :)
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Offline Corley5

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Re: skidder fires !!!!!!!!!???
« Reply #14 on: November 09, 2017, 04:40:00 PM »
Starter shorted out, kept running and melting, dripping, burning wire insulation set some debris in the belly pan on fire.  Luckily I'd cleaned it out not too long before and it didn't take much snow to put it out.  I had an extinguisher in the cage but snow was in abundance and easily accessible ;) ;D
Burnt Gunpowder is the Smell Of Freedom

Offline East ky logging

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Re: skidder fires !!!!!!!!!???
« Reply #15 on: November 09, 2017, 05:23:34 PM »
Burnt a dozer down a few years ago when the cable from the battery rubbed through into the steel fuel line. Had a fire extinguisher but it was burning under the right floorboard and no way to get it up to get to the fire. So as everyone suggests keep everything as clean as possible and watch out for things that's going to cause a problem.

Offline chevytaHOE5674

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Re: skidder fires !!!!!!!!!???
« Reply #16 on: November 09, 2017, 06:56:06 PM »
We lost a forwarder last winter, the machine that had an automatic fire suppression system (and it deployed), and a master power disconnect switch that was turned off. Nobody came up with a reasonable explanation as to why it burned, just remained a mystery.

Offline barbender

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Re: skidder fires !!!!!!!!!???
« Reply #17 on: November 09, 2017, 09:05:03 PM »
Wasn't your boss in a bit of financial trouble? That seems to cause nearly as many fires as debris and poorly routed lines😁😁
Too many irons in the fire

Offline longtime lurker

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Re: skidder fires !!!!!!!!!???
« Reply #18 on: November 10, 2017, 03:28:47 AM »
Brake left on with the Clarks is the other cause of fire here.

But the regular fireplace is on the manifold.  That regular that in addition to the full size extinguishers we fit them all up with one of those 2lb jobs.  I've cleaned the manifold off at 6am and had smoke rising by lunch many times.  Not a lot of risk in them until you've got a gallon of hydraulic oil over 4" of  trash in her belly.
The quickest way to make a million dollars with a sawmill is to start with two million.

Offline g_man

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Re: skidder fires !!!!!!!!!???
« Reply #19 on: November 10, 2017, 06:46:23 AM »
What do you guys prefer for an extinguisher. CO2 or ABC powder. I have heard CO2 can also be used to stop a run away engine but not so good on electrical and the ABC powder can ruin a lot of stuff from corrosion but will put out any fire.

gg


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