Komatsu D475A-5E0 Operation & Maintenance Manual page 154

OPERATION
OPERATION
(D) Setting seat for weight
To protect the operator, it is necessary to adjust the suspension to match the operator's weight. When performing
this adjustment, stop the machine, set the seat to the correct posture, then operate the lever.
Pull up lever (3) lightly a short distance. The weight setting is adjusted automatically. (The air pressure inside the
suspension is increased or decreased to match the operator's weight.)
(E) Fore-and-aft adjustment of seat cushion
Operate lever (4) up, set the seat cushion to the desired position, then release the lever.
Fore-and-aft adjustment: 60 mm (2.4 in)
(F) Adjusting reclining angle
Operate lever (5) up and move the back cushion to the front or rear.
But your back firmly against the seat back when performing this adjustment. If you move your back away from the
seat back, the seat back may suddenly spring forward.
Amount of adjustment
Forward tilt: 20 deg. (over 20 deg. is free)
Rear tilt: 60 deg.
NOTICE
If the seat back is reclined too far, the seat back may hit the rear glass, so use it in a position where it does not contact the glass.
(G) Adjusting headrest angle
Rotate the backrest to the front or rear and set to the desired angle.
Amount of adjustment: 38 deg.
(H) Adjusting headrest height
Move the headrest up or down and set to the desired height.
Amount of adjustment: 100 mm (3.9 in)
(I) Lumbar support
Operate switch (6) to give suitable tension to the lumbar region.
Adjust the curve of the backrest portion as desired.
Push (+): Tension becomes stronger
Push (-): Tension becomes weaker
(J) Adjusting hardness of suspension damper
It is possible to adjust the hardness of the suspension damper with
knob (7). If knob (7) faces the front of the seat (a), the suspension
becomes harder; if it faces the rear of the seat (b), the suspension
becomes softer.
Amount of adjustment: 5 stages
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