340 Excavator Caterpillar

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Adjust all mirrors as specified in the Operation and Maintenance Manual. Failure to heed this warning can lead to personal injury or death.

Note: Your machine may not be equipped with all the mirrors that are described in this topic.

Illustration 1	g06220616
(1) Right Side View Mirror on the Cab (2) Left Side View Mirror on the Cab

Illustration 2	g06279207
(3) Rear tank mirror (4) Front tank mirror

Mirrors provide more visibility around your machine. Make sure that the mirrors are in proper working condition and that the mirrors are clean. Adjust all mirrors at the beginning of each work period and adjust the mirrors when you change operators.

Modified machines or machines that have more equipment or attachments may influence your visibility.

Mirror Adjustment

• Park the machine on a level surface.

• Lower the work tool to the ground.

• Move the hydraulic lockout control to the LOCKED position. For further details on this procedure, refer to Operation and Maintenance Manual, "Operator Controls".

• Stop the engine.

• Adjust rear view mirrors to provide visibility behind the machine at a maximum distance of 30 m (98 ft) from the rear corners of the machine.

Illustration 3	g06220634
Tightening sequence

After adjustment of the mirror angle, make sure that the CAT logo is at the top.

It may be necessary to tighten the mirror mounting bolts periodically. If the bolts are loose, tighten the bolts in the sequence shown in Illustration 3. Tighten bolts (1) and (2) to 11 ± 2 N·m (8.1 ± 1.5 lb ft).

Tighten the bolts (3) through (6) to 2 ± 0.4 N·m (1.5 ± 0.3 lb ft).

Right Side View Mirror on the Cab (1)

Illustration 4	g06223277

If equipped, adjust the right side view mirror on the cab (1) so the front of the right track can be seen from the operator seat. A view of at least 1 m (3.3 ft) from the right front of the machine should be seen from the operator seat.

Left Side View Mirror on the Cab (2)

Illustration 5	g06223279

If equipped, adjust the left side view mirror on the cab (4) so the left side of the cab, access door, and rear of left track can be seen from the operator seat. A view of at least 1 m (3.3 ft) from the side of the machine should be seen from the operator seat. Additionally, provide as much visibility to the rear as possible.

Rear Tank Mirror (3)

Illustration 6	g06279214

If equipped adjust the rear mirror on the tank so the right side of fuel tank and the hydraulic tank can be seen from the operator seat. A view of at least 1 m (3.3 ft) from the side of the machine should be seen from the operator seat.

Rear Tank Mirror ( LongReach and Straight Boom Only)

Illustration 7	g06415816
(1) Boom (LRE and SB) (2) Step on the Storage Box (3) Hand Rail (4) Track (5) Storage Box

If equipped adjust the rear mirror on the tank so the boom, hand rail, track, storage box, and step on the storage box can be seen from the operator seat.

Front Tank Mirror (4)

Illustration 8	g06279217

If equipped adjust the front mirror on the tank (2) so the right access door and the counterweight can be seen from the operator seat. A view of at least 1 m (3.3 ft) from the side of the machine should be seen from the operator seat. Additionally, provide as much visibility to the rear as possible.