Section IV. SUGGESTED TEST QUESTIONS FOR CRAWLER, TRUCK, AND WHEEL MOUNTED CRANES

TB 600-2

b. It should be removed and repaired before further damage occurs.

21.

The yoke support jacks on a 18-yard scraper are used to:

a. Raise the draft yoke only while attaching scraper to prime mover.

b. Raise entire scraper while attaching unit to a prime mover.

22.

If unit is operated for a short time with tires overinflated:

a. Tires will not be damaged if deflated as soon as job is completed.

b. Tires will be damaged no matter how short the time they are operated this way.

23.

Cables should be cleaned and lubricated.

a. Once each week whenever possible.

b. Once each month if conditions permit.

24.

When traveling with a loaded scraper:

a. Carry bowl resting on bowl locks.

b. Carry bowl 1 to 2 inches above bowl locks.

25.

When returning to the cut at high speeds:

a. Always close apron and retract the ejector.

b. Leave apron partially open and keep the ejector forward.

Section IV. SUGGESTED TEST QUESTIONS FOR CRAWLER, TRUCK, AND WHEEL MOUNTED CRANES

A. Answer these questions by "True" or "False".

1. A crane operator must be alert and know all the hand signals authorized for use by the US Army.

2. When handling heavy loads, stability and strength shall be checked by hoisting the load a short distance and

holding it with the hoist brake.

3. No warning signal is sounded before swinging a load over workmen.

4. When using a magnet, the weight of the magnet should be figured as part of the load.

5. The magnet can be used to break up heavy pieces of scrap.

6. If, when operating, the battery ammeter shows discharge, the battery is fully charged.

7. When the crane is shut down for the night, all brakes must be set.

8. If the engine does not start after holding the start button in for 30 seconds, you can hold the button in for 30

seconds more, immediately.

9. Before hoisting a heavy load after the crane has been idle for several days, it is advisable to hoist the hook block

to the boom point several times with the brakes applied lightly to remove moisture from brake linings.

10. The operator must avoid rough or jerky stops and starts at all times.

11. If cables are not spooled smoothly on the host drums they might break.

12. In case of fire, the following action should be taken: Close emergency fuel shutoff and use fire extinguisher with

discharge directed at base of the fire.

13. Each crane has a lubrication chart, listing points to be lubricated, proper lubricants, and intervals.

It is not necessary to use this chart when crane has been operating for 30 days or more.

14. A tagline is a device used to hold a load stationary when the house is rotated.

15. The operator may allow a man to ride a suspended load if he is wearing safety shoes.

16. Only authorized persons are allowed in the cab when the crane is in operation.

17. No part of the rotating upper works should come nearer than 10 feet to any power line.

18. The operator shall make sure, by personal observation and signals from ground man that the load is well secured

and balanced before raising it more than a few inches.

19. Drivers of truck mounted cranes may move the crane only on signal from the crane operator when moving a load

suspended.

20. In emergencies, it is permissible to make a side pull with a crane.

21. It doesn't make any difference where the boom is in relation to the load.

22. Spare gasoline for the starting engine may be carried on a crane in a gallon jug.

23. The operator must not leave the controls while a load is still suspended.

24. Engines must be shut down before refueling any crane or crane carrier.

25. The crane operator is responsible for unsafe practices pertaining to his rig and his chainers.

B. The following questions are multiple choice type.

26. The preoperation inspection of all cranes should be performed by:

B-3