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Caterpiller Twenty questions

Caterpiller Twenty questions

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Clipperno3
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I have been told about a Twenty for sale. My friend has looked at it and we will be going to look at it next Saturday. It is a L/PL Twenty. The engine is stuck but I dont really have any concerns about that as I have restored several old tractors before. He did say that the owner said that the tracks were stuck. I am thinking that it is a steering clutch problem. How difficult is it to access the steering clutches to look at them? If they are stuck is there any easy way to work on them without disassembling the clutch housings? Thanks for any information.
My friend said that there was an extra radiator, cylinders, head, carb. and crank shaft to go with the tractor.
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Thu, Sep 25, 2014 10:38 PM
MARCOTEN
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to look inside/ disacemble: track off, track frame off , sprocket off then cluth housing off, quit some work,
or : take out all adjustment that you can pull clutch as free as possible with handle , then work machine very hard , pull clutch handle , aply brake on the side you want to free , and hope it will come free, (is much easyer!!!!) mabe put some sort of petroleum in casing of cluth for a few months to let it work in the stuck cluth and plates.
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Fri, Sep 26, 2014 3:02 AM
drujinin
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Reply to MARCOTEN:
to look inside/ disacemble: track off, track frame off , sprocket off then cluth housing off, quit some work,
or : take out all adjustment that you can pull clutch as free as possible with handle , then work machine very hard , pull clutch handle , aply brake on the side you want to free , and hope it will come free, (is much easyer!!!!) mabe put some sort of petroleum in casing of cluth for a few months to let it work in the stuck cluth and plates.
In your case, I would try to fill the steering clutch compartments so that it will help to loosen the brakes!
Which is probably holding it where it is.
Tying the steering clutch levers back will even sometimes help to break the clutches free while you are dragging it out of its resting place and onto your trailer!
Good Luck on your First Acquisition!
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Fri, Sep 26, 2014 3:07 AM
old-iron-habit
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Reply to drujinin:
In your case, I would try to fill the steering clutch compartments so that it will help to loosen the brakes!
Which is probably holding it where it is.
Tying the steering clutch levers back will even sometimes help to break the clutches free while you are dragging it out of its resting place and onto your trailer!
Good Luck on your First Acquisition!
It is possible that the tracks are stuck as said. Will the machine roll with the transmission in neutral. If it does then it would be in the steering clutches. If it does not roll then the brakes or the tracks are probably stuck. Often possible to break them loose by pulling them around with a bigger horse.
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Fri, Sep 26, 2014 3:56 AM
Clipperno3
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Reply to old-iron-habit:
It is possible that the tracks are stuck as said. Will the machine roll with the transmission in neutral. If it does then it would be in the steering clutches. If it does not roll then the brakes or the tracks are probably stuck. Often possible to break them loose by pulling them around with a bigger horse.


Thanks to all for your replies. After looking at it this past Saturday I think the brakes could be stuck. Will try the bigger horse method Thanks again.
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Tue, Sep 30, 2014 4:05 AM
drujinin
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Reply to Clipperno3:


Thanks to all for your replies. After looking at it this past Saturday I think the brakes could be stuck. Will try the bigger horse method Thanks again.
Rescue missions are always Fun!
If it is going to involve a "bigger horse" PLEASE take photo's!
As we all like to see photo's!

Tie the steering levers back before you even move it. This will allow the brakes to come free a little easier as the clutches will slip(a good sign) allowing the tracks own traction to loosen the stuck brake. In my opinion it is SOMETIMES better than forcing it through a shaft from the opposite side. If the ground is too muddy, then un-tie the steering clutches to gain more to break it free. Biggest thing you want is the clutches and brakes to ALL be free in their function as its never fun to manuever a dead tractor into a shop that don't steer.
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Tue, Sep 30, 2014 6:41 PM
Clipperno3
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Reply to drujinin:
Rescue missions are always Fun!
If it is going to involve a "bigger horse" PLEASE take photo's!
As we all like to see photo's!

Tie the steering levers back before you even move it. This will allow the brakes to come free a little easier as the clutches will slip(a good sign) allowing the tracks own traction to loosen the stuck brake. In my opinion it is SOMETIMES better than forcing it through a shaft from the opposite side. If the ground is too muddy, then un-tie the steering clutches to gain more to break it free. Biggest thing you want is the clutches and brakes to ALL be free in their function as its never fun to manuever a dead tractor into a shop that don't steer.
Well I went and got the Twenty on Saturday. Pulled the inspection covers and the brakes/clutches were fine. I started spraying the rail with my home made 50/50 automatic transmission fluid/acetone mix. Hammered on the pads a little and then used a long bar to move the sprocket back and forth. After a bit the Cat moved more and more. Anyway we got it broke loose and pulled up on the trailer. Steering clutches and brakes work. Number three cylinder has a little rust as viewed through the plug hole. Shot some Kroil in all cylinders and will put a jack under the crank and put a little pressure on it and let it set for a while. I will post a photo as soon as my friend gets them to me.
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Tue, Oct 7, 2014 2:46 AM
MARCOTEN
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Reply to Clipperno3:
Well I went and got the Twenty on Saturday. Pulled the inspection covers and the brakes/clutches were fine. I started spraying the rail with my home made 50/50 automatic transmission fluid/acetone mix. Hammered on the pads a little and then used a long bar to move the sprocket back and forth. After a bit the Cat moved more and more. Anyway we got it broke loose and pulled up on the trailer. Steering clutches and brakes work. Number three cylinder has a little rust as viewed through the plug hole. Shot some Kroil in all cylinders and will put a jack under the crank and put a little pressure on it and let it set for a while. I will post a photo as soon as my friend gets them to me.
well done! some pictures posted here of the proces we always appriciate! thanks in advance!!
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Tue, Oct 7, 2014 3:21 AM
Steve A
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Reply to MARCOTEN:
well done! some pictures posted here of the proces we always appriciate! thanks in advance!!
The jack trick works nice if it wasn't such a pain to remove the oil pan, if the valves will close make a adapter and pipe compressed air to that cylinder and let it set for a week or 2
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Tue, Oct 7, 2014 5:33 AM
Clipperno3
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Reply to Steve A:
The jack trick works nice if it wasn't such a pain to remove the oil pan, if the valves will close make a adapter and pipe compressed air to that cylinder and let it set for a week or 2
Ok. Its been since October of 2014 but I have made progress. Yesterday we started my Twenty up and ran it around. Over the last 11 months I sleeved the #3 cylinder and put new rings in it, did a valve job and put 4 new valves in it. I'm still interested in getting hood side panels but the latch question is still there.
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Mon, Sep 14, 2015 2:18 AM
old-iron-habit
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Reply to Clipperno3:
Ok. Its been since October of 2014 but I have made progress. Yesterday we started my Twenty up and ran it around. Over the last 11 months I sleeved the #3 cylinder and put new rings in it, did a valve job and put 4 new valves in it. I'm still interested in getting hood side panels but the latch question is still there.



You have to quit teasing and post some pictures.
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Mon, Sep 14, 2015 3:39 AM
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