Operation - Section 32 OM3223 Page 32-10 Operator Cab and Controls OPERATOR SEAT The operator's seat provides a fully adjustable cush- ioned ride for the driver's comfort and ease of opera- tion. Adjustment The following adjustments must be made while sitting in the seat. 1. Headrest: Move up, down, fore, or aft by mov- ing headrest (1, Figure 32-10) to desired posi- tion. 2. Armrests: Rotate adjusting knob until armrest is in desired position. 3. Backrest: Lift handle (3) to release and select backrest angle; release control handle to set. 4. Seat Belt: Operator should always have seat belt (4) buckled in place and properly adjusted whenever vehicle is in motion. 5. Seat Slope:
Lift lever (5) and hold to adjust the slope of seat. Release lever to lock adjust- ment. 6. & 7 Air Lumbar Support: Each rocker switch (6 or 7) controls an air pillow. Switch (7) controls the lower air pillow and switch (6) controls the upper air pillow. To inflate, press on the top of the rocker switch and hold for desired support, then release. To deflate, press on the bottom of the rocker switch and hold for desired support, then release. Adjust each pillow for desired support. FIGURE 32-10. OPERATOR SEAT ADJUSTMENT CONTROLS 8. Seat Suspension: Move rocker switch (8) up to increase ride stiffness and down to decrease ride stiffness. 1. Headrest 2. Armrest Adjustment 3.
Backrest Adjustment 4. Seat Belt 5. Seat Slope Adjustment 6. Upper Air Pillow Lumbar Support 7. Lower Air Pillow Lumbar Support 8. Suspension Adjustment 9. Horizontal Adjustment 10. Mounting Capscrews and Hardware 11.Seat Tether Capscrew 12. Seat Height Adjustment 9. Horizontal Adjustment: Lift control lever (9) and hold. Bend knees to move the seat to a com- fortable position. Release the control lever to lock the adjustment 10. Seat Height: Lift lever (12) and hold to adjust the height of the seat. Release the lever to the lock adjustment. Seat Removal 1. Remove cap screws (10, Figure 32-10) and hardware that secure the seat base to the riser.
Remove cap screws (11) that secure tether to floor. Seat Installation 1. Mount the seat assembly to the seat riser. Install cap screws (10, Figure 32-10), lock washers, flat washers and nuts. Tighten the cap screws to standard torque. 2. Remove the seat assembly from the cab to a clean work area for disassembly. 2. Fasten tether straps to floor with cap screws (11), flat washers and lock washers. Tighten the cap screws to standard torque.