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D7 3T, Hour Meter / Track Wear

D7 3T, Hour Meter / Track Wear

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RDY2ROK
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I'm trying to figure out the hours on my Dozer, the hour meter below had moisture in it and the numbers are not legible I've pulled the end cap to let it dry out and stopped there. Anyone know what might be the next steps? Is there a good way to check its use from looking at the tracks or sprockets? Thanks.

[img]http://i1108.photobucket.com/albums/h407/ROK2RDY/1951%20D7%203T%2017877%20DOZER/IMAG0330.jpg[/img]

[img]http://i1108.photobucket.com/albums/h407/ROK2RDY/1951%20D7%203T%2017877%20DOZER/IMAG0328.jpg[/img]

[img]http://i1108.photobucket.com/albums/h407/ROK2RDY/1951%20D7%203T%2017877%20DOZER/IMAG0331.jpg[/img]

[img]http://i1108.photobucket.com/albums/h407/ROK2RDY/1951%20D7%203T%2017877%20DOZER/IMAG0327.jpg[/img]

[img]http://i1108.photobucket.com/albums/h407/ROK2RDY/1951%20D7%203T%2017877%20DOZER/IMAG0332.jpg[/img]
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Wed, Apr 23, 2014 5:29 AM
Old Magnet
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I'd stop right there and go looking for a good used service meter.
Eyeballing the undercarriage for wear is not a good indicator of total hours on the machine. Who knows how many times the undercarriage has been rebuilt and under what soil conditions it's been used.

A 3T today is certainly going to be well worn.
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Wed, Apr 23, 2014 6:56 AM
Ray54
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Here in California most all Cats got used and some were along the line the hour meter has stopped working and nobody cared it seems.I at one time had a big can full of hour meters and pieces as a junk yard I frequented didn't care about such parts unless they were going to sell as a running engine and I never put the right parts together to make one work correctly.Tracks can give you a idea but the soil it was used in makes a lot of difference as well as was it pulling or was it pushing and then running in reveres almost as much as forward.I was told by junkyard people ware on peddles and linkages are as good as any indicator. Farm tractors are much easier to guess than constitutions tractor I would think because they are more apt to stay in the same conditions.Now there have been some that show up here in the for sale section from the east coast that have been barn stored for 50 of there 60 plus years that show a 1000 or 2000 hours that maybe correct for that machine.But here in the west I don't here of any barn stored tractors.Good hunting for clues on how much your machine has done.
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Wed, Apr 23, 2014 7:17 AM
Old 3T lover
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Reply to Ray54:
Here in California most all Cats got used and some were along the line the hour meter has stopped working and nobody cared it seems.I at one time had a big can full of hour meters and pieces as a junk yard I frequented didn't care about such parts unless they were going to sell as a running engine and I never put the right parts together to make one work correctly.Tracks can give you a idea but the soil it was used in makes a lot of difference as well as was it pulling or was it pushing and then running in reveres almost as much as forward.I was told by junkyard people ware on peddles and linkages are as good as any indicator. Farm tractors are much easier to guess than constitutions tractor I would think because they are more apt to stay in the same conditions.Now there have been some that show up here in the for sale section from the east coast that have been barn stored for 50 of there 60 plus years that show a 1000 or 2000 hours that maybe correct for that machine.But here in the west I don't here of any barn stored tractors.Good hunting for clues on how much your machine has done.
Thousands and thousands of hours....you can't wear a 3T out. You can beat and abuse it to death but you can't wear it out.

You can look at the track frame corners and wear on the final drive covers and guess that it has been used a good bit but then soil conditions determine a lot. Sand will wear more than clay soils. Just properly fix what breaks and you will never run it enough to be back into that again.
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Wed, Apr 23, 2014 7:35 AM
edb
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Reply to Ray54:
Here in California most all Cats got used and some were along the line the hour meter has stopped working and nobody cared it seems.I at one time had a big can full of hour meters and pieces as a junk yard I frequented didn't care about such parts unless they were going to sell as a running engine and I never put the right parts together to make one work correctly.Tracks can give you a idea but the soil it was used in makes a lot of difference as well as was it pulling or was it pushing and then running in reveres almost as much as forward.I was told by junkyard people ware on peddles and linkages are as good as any indicator. Farm tractors are much easier to guess than constitutions tractor I would think because they are more apt to stay in the same conditions.Now there have been some that show up here in the for sale section from the east coast that have been barn stored for 50 of there 60 plus years that show a 1000 or 2000 hours that maybe correct for that machine.But here in the west I don't here of any barn stored tractors.Good hunting for clues on how much your machine has done.
hi Team,
the meter counter can be removed by soaking the crud away from the counter body and gently levering at the cut out section on the counter end plate.
Clean the counter with kero or similar--be gentle as with age oil reacts with the paint on the counter wheels so it can soften and come off.
Lube with light oil on the counter mechanism itself and use high temperature grease on the main gear wheel and drive worm.
The drive worm shaft should just pull out--dry grease may make this task a bit harder so use loose juice.
The drive shaft spigot housing should come out of the main body of the meter by holding it gently in protected vice jaws and twisting and pulling at the same time via the main body. There is an oil seal in this part to keep oil from the Governor housing out.
Hope this helps.
Cheers,
Eddie B.
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Wed, Apr 23, 2014 7:39 AM
johan7
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Reply to edb:
hi Team,
the meter counter can be removed by soaking the crud away from the counter body and gently levering at the cut out section on the counter end plate.
Clean the counter with kero or similar--be gentle as with age oil reacts with the paint on the counter wheels so it can soften and come off.
Lube with light oil on the counter mechanism itself and use high temperature grease on the main gear wheel and drive worm.
The drive worm shaft should just pull out--dry grease may make this task a bit harder so use loose juice.
The drive shaft spigot housing should come out of the main body of the meter by holding it gently in protected vice jaws and twisting and pulling at the same time via the main body. There is an oil seal in this part to keep oil from the Governor housing out.
Hope this helps.
Cheers,
Eddie B.
Hello , just as Ray54 said , look for "polished" brake pedals and hand levers . Track wear is no measure for worked hours . You CAN do this : drive the tractor some 10 meters forward and stop without braking . Measure the distance between the track frames at the front of the machine . Drive the machine back the same distance and stop without braking . Measure again . There is always a difference , but it should be as small as possible . If you measure 15 mm or more , there is play in the bushings of the track frames around the dead axle . These bronze bushings are hardly changed during the machine's life . Normally the bushing at the sprocket side wears the fastest and can even cause breakage of one or more bolts of the diagonal arms .
Another thing is the square end where you put the hand crank for starting . Is it still sharp or rounded off ?
Greetings of a 3T owner . johan7
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Fri, Apr 25, 2014 12:17 AM
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