Komatsu Utility PC12R-8 MISTRAL, Shop Manual, Page: 142 / 324

Machine model PC12R-8
Classifi-
cation
Check item Test Condition Unit
Standard
value
Permissible
value
Braking angle
Work equipment at max. reach
.
No load in bucket
.
Engine speed: high idling
.
Hydraulic oil temperature: 45 ± 55ëC
.
Make centering marks on the outer swing
circle rings. Rotate the revolving frame
360ë and lock in position. Measure the dif-
ference between the marks after stopping.
mm
(Degree)
68
(17ë)
Max. 80
(Max. 20ë)
Time taken to start swing
Work equipment at max. reach
.
No load in bucket
.
Engine speed: high idling
.
Hydraulic oil temperature: 45 ± 55ëC
.
Measure the time taken for swings
to start from positions at 90ë and
180ë.
90ë
sec
2
1.8 ± 2.2
180ë 3.8 3.4 ± 4.2
Time taken for to swing
Work equipment at max. reach
.
No load in bucket
.
Engine speed: high idling
.
Hydraulic oil temperature: 45 ± 55ëC
.
Make one turn to settle machine
.
Measure the time taken to make 5 full
swings.
sec 34.0 Max. 38.0
Hydraulic drift of swing
.
Load in bucket PC12R: 63 kg
PC15R: 72 kg
.
Engine switched off
.
Hydraulic oil temperature: 45 ± 55ëC
.
Park the machine on a 15ë slope and po-
sition the boom at 135ë with respect to
the ground surface.
.
On the outer swing circle, mark the posi-
tion between revolving frame and track fra-
me. After 15 minutes measure the drift.
mm
(Degree)
300
(75ë)
Max. 360
(Max. 90ë)
. FOR THE MACHINE
20-8
PC12R-8 PC15R-8
Swing
RKP01840
RKP01840
RKP01840
RKP01990
135
°
15
°