Unit 6-11 Safe Operation of Agrcultural Equipment

An implement's 540 rpm PTO shaft may be readily connected to a 1,000 rpm PTO tractor sline.

• True

• False

A tractor drawbar is correctly adjusted for all PTO use when the drawbar is centered and is extended to its longest position.

• True

• False

If PTO-shaft universal joints are not synchronized, the PTO will operate longer without vibration or excess wear.

• True

• False

Category II 3 point hitches may be used for Category I equipped implements.

• True

• False

To work under a hydraulically riased implement, one should have another worker operate the levers and disregard additional support for the implement.

• True

• False

Select the statement which best indicates how a trailed plow should be attached to tractor for field work

• the center of pull follows directly behind center of resistance

• the tractor drawbar pivot is directly ahead of the first plow bottom

• hitch points of plow and tractor should be on the line of pull

• the plow hitch should be directly behind the drawbar pivot pin, regardless of tractor rear wheel spacing

Select the statements which best indicate the use of a 3 point hitch

• three categories are used

• raised and lowered hydraulically

• may be adjusted laterally or from front to rear

• these are all correct

Double acting hydraulic cylinders are operated by

• two pressure lines

• two lines with one line serving pressure and one serving as a return line as the cylinder operates

• one line which alternates as pressure or return line

• one line which serves as pressure and return line at the same time

Select the statement about PTO operation which is not correct

• PTO speeds vary with engine speed

• some tractors have 540 rpm and 1000 rpm PTO speeds

• a 540 rpm implement PTO operates better at 1000 rpm speeds

• a completely shielded PTO shaft has been developed

When attaching a trailed load to a tractor, one should remember that

• excessive drawbar height reduces stability

• a load should never be attached to parts other than the 3 point hitch or drawbar

• the drawbar is correctly located for safety

• all of these are correct