Take a crowbar with you, and bar the top front of the sprocket back and forth, looking for looseness in the sprocket shaft bearings. Drain a couple of cupfuls of oil from each final drive to check for metal particles. The brake pedal shaft needle bearings get dust in them and seize up, resulting in brake pedals that don't return properly and dragging brakes.Ĭheck the transmission magnetic screen for metal and brake lining chunks. The gear lever linkage bushings wear and sometimes prevent proper gear selection. Check for wear in all operating linkages. Make sure the powershift transmission goes in and out of gear cleanly, with no incorrect positioning of the gear lever. Make sure all the controls work properly and effectively. Let it idle for a few minutes then open the throttle to see if there's any sign of blue smoke. Get the engine properly warm (20 minutes work) and see if there's any unusual noises. Check the turbo inlet & outlet to see if there's any sign of oil leakage from either side. Listen to the turbo on shutdown to see if you can hear the turbine or compressor wheels scraping on the housings. Recent head replacement with unpainted head shows head damage, either from overheating or a dropped valve. The track frames splay out when wear in the outer hub bearing is severe.Ĭheck the cooling system for good condition coolant, no corrosion, and no core blockages in the tubes. Check for track toe-out, to find out if outer sprocket bearing is severely worn. Look for damage to track frame area, broken bolts, leaks and cracks. Can be fitted with either straight bull blade (#6S) or angle blade (#6A). There are no major issues with this model tractor, unless it's been abused.įitted with the N/A, 4.75" bore 3306 engine, rated at 140 FHP, built from 1968 to 1977, available in Direct Drive or Powershift transmission.Ĭan be fitted with single, double or triple valve hydraulic system (#161, #162 or #163). An excellent little tractor, one of Caterpillars finest products.
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