Power take-off

• Pages: 13-15

Construction

8. Power take-off

8.1.

General

8.1.1.

A power take-off should be so designed that there is a

minimum clearance of

8

cm in any direction between the centre of

the end of the splined shaft and any stationary part of

the

tractor.

8.1.2. (1) An instrument indicating the speed of the power

take-off when operating under load should be made available for

tractors.

(2) An instrument of the kind described in subparagraph (1)

should be fitted as part of any tractor capable of driving a rear

power take-off in excess of 600 rpm when operating under load.

8.2. Rear power take-off

8.2.1.

The direction of rotation of a rear power take-off

should be clockwise when viewed by an observer facing in the

direction of forward travel.

8.2.2. (1) When operating under load, the speed of a rear

power take-off should normally be maintained within the following

limits at the design speeds indicated:

(a) at 540 rpm

10

rpm for a design speed of

540

rpm; and

(b) at 1,000 rpm 25 rpm for a design speed of 1,000 rpm.

(2) Tractors should be fitted with means of preventing the

inadvertent operation of rear power take-offs under load in excess

of—

(a) 630 rpm for a design speed of 600 rpm; and

(b) 1,150 rpm for a design speed of 1,100 rpm.

8.3. Auxiliary power take-offs

8.3.1.

An auxiliary power take-off should have a normal

speed under load of 1,000 rpm 25 rpm.

8.3.2. (1) A power take-off

drive

mounted on the right-hand

side of a tractor and extending to the right (when viewed by an

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