Trucks and heavy equipment Shiol (Caterpillar 966F Loader Model 1991) *The engine consumes oil, needs a piston ring set. *The gearbox needs to be inspected, weak bone, possibly internal cylinders only. *The rear differential needs a complete overhaul. *Brake repair is weak. *The camel bolts need to be changed. *Oil leakage from the hydraulic pistons. *Tire condition is average. The loader was working efficiently, and all notes are for clarification only. The only breakdown that it is stopped for is the differential issue.