302Cb

Question 1

Cutting edges are heavy components. What safety precautions should you take when
removing and replacing these types of components?

Answer 1

When removing/replacing cutting edges, always use the assistance of a co-worker
and suitable lifting equipment. Securely block the blade, bucket or bowl. Use sturdy
aligning punches to position the cutting edges; not your hands or fingers. Securely
block the apron or elevator on a motor scraper as required.

Question 2

When ground-engaging tools become loose, damaged or broken, one of the first
things you should do is consider the operating conditions where the machine is
operating.T/F

Answer 2

true

Question 3

In many cases you are able to help protect areas on a blade, bucket or bowl that are
subject to high wear by a hard surface welding process. Using general purpose
welding rods provides maximum protection for these components.T/F

Answer 3

false;

Question 4

A winch may be used on an off-road machine. Identify one precaution you must take
to prevent serious personal injury when a winch wire rope is under tension.

Answer 4

Keep clear of the winch wire rope whenever it is under tension. The wire rope could
whip around quite violently if it suddenly broke. Objects and debris attached to the
wire rope could fly in unexpected directions.

Question 5

Identify the two (2) main methods used to drive a winch.

Answer 5

a) Mechanically by means of a power takeoff and a driveshaft.
b) Hydraulically by means of a hydraulic pump and motor arrangement.

Question 6

Identify some precautions you must observe when removing/replacing wire rope on a
winch.

Answer 6

Always wear gloves to protect your hands and fingers from the sharp wire strands.
Uncoil the new wire rope so that kinks do not form in the wire rope. Attach the wire
rope securely to the winch. Wind the wire rope on the winch in the same fashion as
the original. Coil and tie the used wire rope so it is easier and safer to transport to the
recycling centre