Precautions For Maintenance; Before Performing Maintenance; Stopping The Engine Before Service; Warning Tag - Komatsu 730E Shop Manual

BEFORE PERFORMING MAINTENANCE

Stopping The Engine Before Service

• Before performing inspections or maintenance,
stop the machine on firm, flat ground. Lower the
dump body, shut the engine off, and apply the
parking brake. Install wheel chocks.
• If the engine must be operated during service,
move the selector switch to the NEUTRAL
position, and apply the parking brake. Perform
this work with two people. One person must sit in
the operator's seat to stop the engine, if
necessary. DO NOT move any controls during
these situations unless necessary for service.
• When servicing the machine, DO NOT touch any
moving parts. DO NOT wear loose clothing.
• When servicing the truck with the dump body
raised, place the dump lever in the HOLD
position. Install the body-up retention cable
securely.

Warning Tag

• DO NOT start the
engine or operate the
controls while a
person is performing
maintenance on the
truck. Serious injury
or death may result.
• Attach a warning tag to the control lever in the
operator's cab to alert others that you are
working on the machine. Attach additional
warning tags around the machine, if necessary.
• These tags are available from your Komatsu
distributor. Part No. 09963-03001.

Proper Tools

• Use only tools suited to
the task. Using damaged,
low quality, faulty,
makeshift tools can
cause personal injury.
• Extra precaution must be used when grinding,
welding, and using a sledgehammer.
A03048

PRECAUTIONS FOR MAINTENANCE

or
General Safety & Operation

Securing The Dump Body

To avoid serious personal injury or death, the
body retention cable must be installed whenever
personnel are required to perform maintenance
on the truck while the dump body is in the raised
position.
The Komatsu body-up safety cable can only be
used with a Komatsu body. Non-OEM body may
not accommodate the Komatsu body-up safety
cable. The end user must ensure that a proper
cable is used.
FIGURE 3-2. BODY UP CABLE
1. Rear Body Ear
2. Cable Stored
Position
1. To hold the dump body in the up position, raise
the body to its maximum height.
2. Remove cable (3) from its stored position on the
body, and install between rear body ear (1) and
axle housing ear (4).
3. Secure the cable clevis pins with cotter pins.
4. Move the hoist lever to the FLOAT position to
slowly lower the body until the cable is support-
ing the full weight of the body. Then move the
hoist lever to the HOLD position.
5. Return the cable to stored position (2) after
maintenance is complete.
3. Cable
4. Axle Housing Ear
A3-13