Komatsu PC20R-8 Shop Manual page 134

. FOR THE MACHINE
Classifi-
Check item
cation
Boom
Arm
Bucket
Blade
20-18
Machine model
Test condition
Measuring posture
.
Engine speed: low idling
.
Hydraulic oil temperature: 45 ± 55ëC
.
With the work equipment fully extended,
lower the boom and measure the time ta-
ken to raise the machine from when the
bucket reaches the ground.
Measuring posture
.
Engine speed: low idling
.
Hydraulic oil temperature: 45 ± 55ëC
.
Bring the boom into a horizontal position.
Retract the arm cylinder completely and
then extend it. Measure the time elapsing
from when the arm stops at dead centre
until it starts to move again.
Measuring posture
.
Engine speed: low idling
.
Hydraulic oil temperature: 45 ± 55ëC
.
Bring the boom into a horizontal position.
Retract the bucket cylinder completely,
then extend it. Measure the time elapsing
from when the bucket stops at dead centre
until it starts to move again.
Measuring posture
.
Engine speed: low idling
.
Hydraulic oil temperature: 45 ± 55ëC
.
Raise the blade to its max. height, then
lower it. Measure the time that it takes to
raise the machine after the blade touches
the ground
Unit
RKP01910
RKP01920
sec.
RKP01930
RKP01940
PC20R-8
Standard Permissible
value value
Max. 2 Max. 2
Max. 2 Max. 2
Max. 2 Max. 2
Max. 1 Max. 1
PC20R-8 PC27R-8