Komatsu PC20R-8 Shop Manual page 130

. FOR THE MACHINE
Classifi-
Check item
cation
Blade
(measure the downward
movement of the edge
of the blade)
Boom
Arm
Bucket
20-14
Machine model
Test condition
.
Engine stopped
.
Hydraulic oil temperature: 45 ± 55ëC
.
Raise the blade to its maximum height and
measure the height of the edge from the
ground.
Measure the downward after 15 mins.
.
Engine speed: high idling
.
Hydraulic oil temperature: 45 ± 55ëC
.
Check leakages: on the cylinder on the
side opposite to the one under pressure.
H Check one cylinder at a time
Standard
Unit
RKP01870
mm Max. 20
3
cm /
min
PC20R-8
Permissible
value value
Max. 30
2 Max. 5
2 Max. 5
2 Max. 5
PC20R-8 PC27R-8