Copyright Goodheart-Willcox Co., Inc. Heavy Equipment Power Trains and Systems 600 22. Caterpillar _____ have a final drive inspection cover that is used to look for debris wrapped around the final driveshaft. A. articulated haul trucks B. dozers C. four-wheel-drive loaders D. rigid frame haul trucks 23. How are Caterpillar skid steer chain drives adjusted? A. Adjustable idler sprocket. B. Adjustable nylon gauge blocks. C. Movable axle housing with slotted holes. D. They are self-adjusting. 24. If skid steers are operating on hard surfaces, how often should the chain tension be checked as compared to the normal interval? A. Less frequent. B. Same interval. C. More frequent. D. None of the above. 25. How are late-model Bobcat skid steer chain drives adjusted? A. Adjustable idler sprocket. B. Adjustable nylon gauge blocks. C. Movable axle housing with slotted holes. D. They are nonadjustable. 26. How are motor grader drive chains removed? A. Through the tandem chain access covers. B. By removing four master links. C. By removing the tandem chain housings from the motor grader. D. Through the differential housing. 27. _____ failure occurs when two adjacent component surfaces contact each other and friction welds the surfaces together, causing material to lift off when the components attempt to move. A. Adhesive B. Abrasive C. Corrosion D. None of the above. 28. _____ failure occurs due to foreign particles or contaminants in the lubricant. A. Adhesive B. Abrasive C. Corrosion D. None of the above. 15. All of the following are true statements about excavator final drives, except: A. they can contain two planetary gear sets. B. they can contain three planetary gear sets. C. they rotate in the opposite direction of the hydraulic motor. D. they are driven by a differential side gear. 16. In a Caterpillar excavator final drive with three planetary gear sets, _____. A. all three ring gears are part of the track drive sprocket housing B. the third planetary gear set has a stationary planetary carrier C. the hydraulic motor propels the first stage sun gear D. All of the above. 17. Compact track loader final drives _____. A. have tandem chains B. have two planetary gear sets C. are driven by a hydraulic motor D. are driven by a differential side gear 18. Elevated drives in some articulated rubber track tractors use _____ to elevate the power up to the drive sprocket. A. a chain drive B. herringbone gears C. spur gears D. a spiral bevel gear set 19. All of the following are used for checking final drive fluid levels, except: A. horizontal oil level mark. B. fill plug. C. pressure sensor. D. sight glass. 20. Final drive fluid levels should be checked every _____. A. 10 hours or daily B. 100 hours or biweekly C. 250 hours or every month D. 1000 hours or every six months 21. Final drive fluids should be changed every _____. A. 250 hours or every three months B. 1000 hours or every six months C. 2000 hours or every year D. 5000 hours or every other year