trees revenge track rollers

JohnnyJ

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Had a mishap while pushing trees over with the D7 today. The pics and subject probably will bring back a lot of memories from some in bygone years. Thank God for the brush cage as you can see in one of those pics a large top of the tree crashed right onto the roof. The end of that log fell behind dozer and as I was backing while on the log I was turning (probably real wrong to do) and noticed a very tight track suddenly and some binding noise. Stopped immediately to see as you can if viewing pics that the track had came off the rollers left hand side. Track is still on sprocket and front roller but off the rollers. Was this because turned while on log? Think I've done that before. One of the pics shows left track and I didn't think either side was overly loose. By the way note the tree pusher I'm using now. Night and day difference compared to without that thing and now using it. Much less effort to push quite larger trees over. I'm thinking to use blocks and jack up to pry back over the rollers. One pic shows a block of wood I was trying to pull onto to force dozer upward on that side. Any advice to help always appreciated.. thx.
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Sun, May 3, 2015 9:06 AM

Old Magnet

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Tracks would have to be a bit snakey to do that and yes turning while high centered contributed to that. May require jacking up the rear and raising the front with the blade as well as backing off the adjuster to get enough droop in the tracks to get back on the rails.
Similar procedure to changing out a bottom roller.

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Sun, May 3, 2015 9:48 AM

7upuller

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Reply to Old Magnet:

Tracks would have to be a bit snakey to do that and yes turning while high centered contributed to that. May require jacking up the rear and raising the front with the blade as well as backing off the adjuster to get enough droop in the tracks to get back on the rails.
Similar procedure to changing out a bottom roller.

Hey JohnnyJ,

As OldMagnet suggests, loosen the track adjuster and get slack, jack up side of machine. Should be able to realign and set back down. We had an old excavator with a shot under carriage that would slide off of rails a lot. Lift machine up, slowly walked track and it would pop back on. It wasn't a Cat.....lol

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Sun, May 3, 2015 9:55 AM

JohnnyJ

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Reply to Old Magnet:

Tracks would have to be a bit snakey to do that and yes turning while high centered contributed to that. May require jacking up the rear and raising the front with the blade as well as backing off the adjuster to get enough droop in the tracks to get back on the rails.
Similar procedure to changing out a bottom roller.

Does snakey mean too loose?? When greasing I can extend the front idler but they sure didn't seem too loose. Also I can jack up the rear but the blade raise type on this model is cable .. so I will need jack both ends up......right?? Thx for reply Old Magnet.

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Sun, May 3, 2015 9:58 AM

Old Magnet

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Reply to JohnnyJ:

Does snakey mean too loose?? When greasing I can extend the front idler but they sure didn't seem too loose. Also I can jack up the rear but the blade raise type on this model is cable .. so I will need jack both ends up......right?? Thx for reply Old Magnet.

Yup, wasn't thinking right....no down pressure with cable blade.
Snakey means although tracks may be adjusted tight they can still move sideways due to pin and bushing wear.

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Sun, May 3, 2015 10:11 AM

JohnnyJ

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Reply to JohnnyJ:

Does snakey mean too loose?? When greasing I can extend the front idler but they sure didn't seem too loose. Also I can jack up the rear but the blade raise type on this model is cable .. so I will need jack both ends up......right?? Thx for reply Old Magnet.

Best place to place jack(s) is ...? Is it ok to jack up using the blade arm pivot point mid way on machine?? Thanks 7puller and all for reply

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Sun, May 3, 2015 10:13 AM

dpendzic

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Reply to Old Magnet:

Yup, wasn't thinking right....no down pressure with cable blade.
Snakey means although tracks may be adjusted tight they can still move sideways due to pin and bushing wear.

I have put my track back on the bottom rollers by placing a log in front of the idler---drive onto it a bit past center---put a log behind the sprocket and back up on it--then had enough drop to get the track back under

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Sun, May 3, 2015 10:17 AM

Deas Plant.

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Reply to JohnnyJ:

Does snakey mean too loose?? When greasing I can extend the front idler but they sure didn't seem too loose. Also I can jack up the rear but the blade raise type on this model is cable .. so I will need jack both ends up......right?? Thx for reply Old Magnet.

Hi, JohnnyJ.
Dumb suggestion - cut a couple of sections of a 1/2-way decent log - about 6" to 9" dia. - place them side by side crossways under the front of the track and drive forward slowly over them. This usually allows the track to re-align itself back under the rollers without loosening the adjuster off. Similar approach to that offered by Dependzic but one-step.

'Snaky' means worn pins and bushings.

Just my 0.02.

You have a wonderful day. Best wishes. Deas Plant.

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Sun, May 3, 2015 10:21 AM

Old Magnet

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Reply to JohnnyJ:

Best place to place jack(s) is ...? Is it ok to jack up using the blade arm pivot point mid way on machine?? Thanks 7puller and all for reply

Jacking under the blade pivot might be a bit precarious. If you get off center the blade arm may pivot on you.

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Sun, May 3, 2015 10:24 AM

tctractors

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Reply to Old Magnet:

Jacking under the blade pivot might be a bit precarious. If you get off center the blade arm may pivot on you.

The "Best" way of sorting a wandering Track is to place a timber baulk like a short bit of rail timber tight up to the sprocket, then reverse up onto it slowly keeping the tractor moving backwards until you have driven off the baulk, no jacking needed only a bit of timber or such like, backwards is the way to travel for the best effect not forwards, I come from the Land of Knackered Tracks so this task is something I know a lot about.
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Mon, May 4, 2015 2:28 AM

Deas Plant.

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Reply to tctractors:

The "Best" way of sorting a wandering Track is to place a timber baulk like a short bit of rail timber tight up to the sprocket, then reverse up onto it slowly keeping the tractor moving backwards until you have driven off the baulk, no jacking needed only a bit of timber or such like, backwards is the way to travel for the best effect not forwards, I come from the Land of Knackered Tracks so this task is something I know a lot about.
tctractors

Hi, TCtractors.
You may come from the land of knackered tracks but it doesn't make you the only one with any experience or knowledge on the subject. I have mostly found that it is best to travel in the opposite direction from that being travelled when the track came out from under the rollers. JohnnyJ said he was travelling backwards when the track came out from under the rollers, so I suggested travelling forward to get it back under the rollers.

'Sides, the track is more likely to come off the idler than off the sprocket 'cos for the depth of engagement, so have the track being fed onto the idler from the top where it is still in line by going forward.

Just my 0.02. (But what would I know 'cos I'm just a 'pore, dumb, mug operator from Downunder'?)

You have a wonderful day. Best wishes. Deas Plant.

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Mon, May 4, 2015 10:48 AM

trees revenge track rollers

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