Seats and operating positions

• Pages: 9-10

Construction

(c) any parts between which pinching or shearing is possible.

3.7.2. Constant running drives, or drives that rotate when

the engine is running with all clutches disengaged, should have the

outside face of

pulleys,

sheaves, sprockets and gears plus the sides

of nip points adequately guarded.

4. Seats and operating positions

4.1.

Passenger seats

4.1.1.

All passengers should be provided with fixed seats

with back rests, foot rests and handholds.

4.1.2.

(1) If a safety cab or frame is fitted, the passenger

seat should be inside the area protected by the cab or frame, and

should be equipped with seat belts.

(2) Seat belts should be installed only on tractors fitted with

safety cabs or frames.

4.2.

Operator's seat

4.2.1.

Operators' seats should be—

(a) adequately sprung or suspended to absorb vibrations1;

(b) provided with a backrest of at least 15 cm in height above the

loaded cushion, and with a foot rest;

(c) fully adjustable to the operator's height, weight, and arm and

leg reach;

(d) equipped with a cushion of sufficient strength and convenient

shape and adequately upholstered to ensure that the operator

can sit in safety and comfort whatever his size and weight;

and

1 Particular attention should be given to vibrations in the 4 Hz to 9 Hz

range, which are particularly troublesome.

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