80% under carriage

[quote="eric in gilroy"]what exactly does this mean?? is it better to have 80% or 60%? I saw a chart how to measure track wear so i am thinking if the seller says the tractor has 80% under carriage then that means, you only have 20% of life left in tracks sprockets and etc.
Is this correct?[/quote]

It means that you have 80% of the life of the undercarriage left until it's worn out. It is very often approximated or guessed at and you can bet that it'll never be more than what's claimed. You can measure it yourself with calipers and the "as new" specifications which you can obtain from the manufacturer with the SN and/or arrangement number.

G'day. I have a 1989 copy of the Caterpillar Custom Track Service Handbook which is the cat bible on undercarriage wear of that time. Its charts for all of the tracked machines listed start at 0%worn for new dimension parts through 100% and beyond as worn out. So by Cat 80% worn would be only 20% wear left but lots of people when describing a machine will say a machine has 80% undercarriage mean it has 80% wear left so be careful and clarify if possible.
Kevin

[quote="D349"]G'day. I have a 1989 copy of the Caterpillar Custom Track Service Handbook which is the cat bible on undercarriage wear of that time. Its charts for all of the tracked machines listed start at 0%worn for new dimension parts through 100% and beyond as worn out. So by Cat 80% worn would be only 20% wear left but lots of people when describing a machine will say a machine has 80% undercarriage mean it has 80% wear left so be careful and clarify if possible.
Kevin[/quote]

ok i feel better now ,cause every time someone tells me a number i ask them what exactly they mean and have heard both versions from people that have been around track layers for years.

i spent 9 months on track inspection and machine inspection duties for the uk cat dealer Finnings, i think i still have a copy of the CTS handbook somewhere if anyone requires it. i did manage to drop on a home made D2 track gauge which i used for inspecting my D2 3J, i can reproduce them if anyone is interested? gives you a rough idea on how much wear there is in your undercarriage

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I wouldn't mind having one.

i'll see about getting them profiled out in mild or stainless steel and see what the cost will be if i get a bulk order in