3.24 TROUBLE SHOOTING OPERATION 3.24.3 FINAL DRIVES AND SWING GEAR G Incorrect lubricant or oil level too low G Bearings scored or damaged. Noisy operation G Sun gear teeth excessively worn or damaged G Bearings of planetary pinions worn 3.24.4 CRAWLER TRACKS G Wrong track tension Excessive track wear G Track roller loose or out of alignment G Track shoes loose G Track links stuck G Worn drive sprocket G Wrong track tension Excessive wear on drive sprocket G Track links (pins/bores) Excessively worn G Sprocket, rollers and guide wheel out of aligment 280