Komatsu PW160-7K Series Operation And Maintenance Manual page 169

OPERATION
3. Turn fuel control dial to the mid-range speed position and turn
swing lock switch ON.
4. Lower safety lock lever to the UNLOCK position, put control
lever lock switch to OFF position and raise the bucket from
the ground.
5. Operate boom and bucket control lever and arm control lever
slowly to operate the boom cylinder, bucket cylinder, and arm
cylinder to the end of their stroke.
6. Operate the boom and arm slowly at the same time, and
repeat this for 30 seconds.
Next, repeat the same operation with the bucket and swing
for 30 seconds. Operate both fully in turn for 5 minutes.
NOTICE
When pulling in the work equipment, be careful not to let
it hit the chassis or ground.
7. Turn fuel control dial to the full speed (MAX) position and
carry out the operation is Step 6 for 3 -5 minutes.
8. Repeat the following operation 3 - 5 times and operate slowly.
Boom operation RAISE ↔ LOWER
●
Arm operation IN↔ OUT
●
Bucket operation CURL↔ DUMP
●
Swing operation LEFT↔ RIGHT
●
Travel (Lo) operation FORWARD↔ REVERSE
●
NOTICE
When the hydraulic oil is at a low temperature the
machine travel function may have very slow operation.
Always carry out the warming up operation before travelling
to ensure correct function of the travel system and help
extend the life of the machine.
OPERATIONS AND CHECKS BEFORE STARTING ENGINE
Control
lever
lock switch
MAX
OFF
ON
LOCK
UNLOCK
169