EVERY 5000 HOURS MAINTENANCE 4

Adjustment

Seat Adjustment

WARNING

When adjusting the position of the operator's seat, always set the lock lever to the LOCK position to prevent any accidental contact with the control levers.

Always adjust the operator's seat before starting each operation or when the operators change shift. Adjust the operator's seat so control levers and switches can be operated freely and easily with the operator's back against the backrest.

(A) Fore-and-aft adjustment Pull lever (1) up, set the seat to the desired position, then release the lever. Fore-and-aft adjustment: 160 mm (6.3 in) (16 stages)

(B) Adjusting reclining

NOTICE The operator's seat can be reclined to a large angle when the seat is completely pushed forward, but the reclining angle is reduced when the seat is moved backward. So return the seat to its upright position before moving the seat to the rear.

Pull up lever (2) and set the backrest to a position that is comfortable for operation, then release the lever. Sit with your back against the seat backrest when adjusting. If your back is not against the backrest, the backrest may suddenly move forward.

(C) Adjusting seat tilt

Forward tilt Push lever (3) down to adjust angle of the front of seat. (4 stages)

To raise the angle at front of the seat, keep the lever pushed down and apply your weight to the rear of seat.

To lower the angle at front of the seat, keep the lever pushed down and apply your weight to the front of seat.

Rear tilt Pull lever (4) up to adjust angle of the rear of seat. (4 stages)

To raise the angle at rear of the seat, keep lever (3) pulled up, and stand up slightly to remove your weight from the seat.

To lower the angle at rear of the seat, keep lever (3) pulled up, and apply your weight to the seat. Amount of tilt: Up 13° , down 13°

Adjusting seat height It is possible to move the seat up or down by combining adjustments forward tilt and rear tilt. After setting the forward tilt or rear tilt to the desired height, operate the opposite part to set the seat horizontal then secure in position. Height adjustment: 60 mm (2.4 in)

(D) Adjusting armrest angle Armrest (5) can be made to spring up by hand approx. 90° . In addition, by turning the bottom (6) of the armrest by hand it is possible to make fine vertical adjustments of the armrest angle. Armrest adjustment angle: 25° .

REMARK If the seat back is tipped to the front without raising the armrest(5), armrest will rise automatically.

(E) Overall fore-and-aft adjustment of seat Move lever (7) to right, set to the desired position, then release the lever. In this case, the operator's seat, left and right control levers, and lock lever all slide together. Fore-and-aft adjustment:180 mm (7.1 in) (9 stages)

(F) Adjusting suspension Turn knob (8) to the right to make the suspension harder,or to the left to make the suspension softer. Adjust the reading of the dial to match the operator's weight and select the optimum suspension.

REMARK To obtain the optimum adjustment, turn the knob (8) so that the indicator of the weight display (kg) in the transparent portion of knob (8) is the same as the operator's weight.

Rearview Mirrors Loosen nut (1) and bolt (2) mounting the mirror, and adjust to the position which gives the best view from the operator's seat of the blind spot to the left and right sides at the rear of the machine.

Adjust the mirror mount so that it is possible to see people (or objects with a height of 1 m (3.3 ft) or a diameter of 30 cm (12 in)) at the rear left and right of the machine

Install the mirror to the dimensions listed in the table below.

Recognition areas are also shown in the table for reference.

Mounting position X : 350 mm (13.8 in) Range of view Y (right side) : 3500 mm (11 ft 6 in) Range of view Z (left side) : 3500 mm (11 ft 6 in) Mirror A : Must be able to see hatched area (A) Mirror B : Must be able to see hatched area (B)

Seat Belt

WARNING

Before fitting the seat belt, check that there is no problem in the belt mount bracket or mounting belt. If it is worn or damaged, replace the seat belt. Even if no problem can be seen in the belt, replace the seat belt every 3 years. The date of manufacture of the belt is shown on the back of the belt. Always wear the seat belt during operations. Fit the seat belt so that it is not twisted.

Fastening and Removing This seat belt has a wind-in device, so it is not necessary to adjust the length.

Fastening Seat Belt Hold grip (2) and pull the belt out from wind-in device (1), check that the belt is not twisted, then insert tongue (3) into buckle (4) securely. When doing this, pull the belt lightly to check that it is properly locked.

Removing Belt Press button (5) in buckle (4), and remove tongue (3) from buckle (4). The belt is automatically wound in, hold grip (2) and return the belt slowly to wind-in device (1).

Operations Before Starting Engine WARNING

Before starting the engine, check that the safety lock lever is securely at the LOCK position. If the work equipment control lever is touched by accident when starting the engine, the work equipment may move unexpectedly and cause serious damage or personal injury.

1. Check that safety lock lever (1) is at the LOCK position. 2. Check the position of each lever.

Set control lever to the neutral position.

3. Insert the key in starting switch (2), turn the key to the ON position, then carry out the following checks.

1) The buzzer sounds for approx. 1 second, and the following monitors and meters light up for approx. 3 seconds. Radiator coolant level monitor (4) Engine oil level monitor (5) Charge level monitor (6) Fuel level monitor (7) Engine coolant temperature monitor (8) Engine oil pressure monitor (9) Engine coolant temperature gauge (10) Fuel gauge (11) Air cleaner clogging monitor (12)

If the monitors do not light up or the buzzer does not sound, there is probably a failure in the monitor, so contact your

Komatsu distributor for repairs.

2) After approx. 3 seconds, the screen switches to the working mode/travel speed display monitor. Then it switches to the normal screen. Fuel level monitor (7) Engine coolant temperature monitor (8) Engine coolant temperature gauge (10) Fuel gauge (11) Hydraulic oil temperature gauge (13) Hydraulic oil temperature monitor (14)

3) If the hydraulic oil temperature gauge goes out and caution lamp (15) stays lighted up red, perform inspection immediately for the item which is lighted up red.

4) If there are any items where the maintenance time has passed, maintenance interval monitor (16) lights up for 30 seconds. Press maintenance switch (17), check the item, then perform maintenance immediately.

For details of the method of checking the maintenance interval, see "Maintenance Switch (PAGE 3-24)" in the Detailed controls and gauges.