6-9
SWING FUNCTION DRIFT CHECK
Measure the swing drift on the bearing
outer circumference when stopping after a
360
Á
full speed swing.
P
P
reparation
Check the lubrication of the swing gear
and swing bearing.
Place the machine on flat, solid ground
with ample space for swinging. Do not
conduct this test on slopes.
With the arm rolled out and bucket rolled
in, hold the bucket so that the height of
the bucket pin is the same as the boom
foot pin. The bucket must be empty.
Make two chalk marks: one on the swing
bearing and one directly below it on the
track frame.
Swing the upperstructure 360
Á
.
Keep the hydraulic oil temperature at 50
Ü
5
Á
C.
M
M
easurement
Operate the swing control lever fully and
return it to the neutral position when the
mark on the upperstructure aligns with
that on track frame after swinging 360
Á
Measure the distance between the two
marks.
Align the marks again, swing 360
Á
, then
test the opposite direction.
Repeat steps
Θ
and
Ι
three times each
and calculate the average values.
E
E
valuation
7)
(1)
(2)
Η
Θ
Ι
Κ
Λ
Μ
(
(
3)
Η
Θ
Ι
Κ
Unit : Degree
The measured drift angle should be within the following specifications.
((4)
Model
R35Z-7
Standard
40 below
Maximum allowable
50
Remarks
R35Z76MC07
R35Z76MC08
