FIELD: transport.
SUBSTANCE: set of inventions relates to automotive industry. Track-type vehicle comprises running gear assy 10 with guide wheel 25, original track 155 and original bush 137. Said assy 10 comprises two tracks 55 coupled by bush 34, guide wheel and clearance 76 between guide wheel top surface and bush. Sleeve comprises bush 37 located to rotate around pin 43. One of said tracks comprises chain wearing running surface. Guide wheel comprises bottom surface 67 to wear against caterpillar chain wearing running surface and top surface 70 wear against said bush. Said top surface is located radially outside said bottom surface at spacing equal to initial height 85 of top surface. Said initial height can make 70-90% of initial wearing surface height. In initial operation, original track contacts with guide wheel without contact between original bush and guide wheel. Thereafter, said original bush contacts with guide wheel.
EFFECT: lower noise and track wear.
11 cl, 6 dwg
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