CATERPILLAR 977 loading a truck

One of the problems of buying old machinery is not knowing when it is going to let you down in a large manner (major engine failure etc). Some go for a long time, other fail after a short time. (Cat 316E L) (Texas Steiger rolling brush) (lone* Logging -sometimes it preferable to use a crew on the larger trees) (Tree shear on excavator) http://www.augertorqueusa.com/ (if the lime rock is hard are explosives or excavat

Discuss this in the forum topic I need advise on what track loader to buy.