Hyundai HX145LCR Manual page 435

8) SWING BEARING PLAY
(1) Measure the swing bearing play using a
dial gauge to check the wear of bearing
races and balls.
(2) Preparation
Check swing bearing mounting cap
screws for loosening.
Check the lubrication of the swing
bearing. Confirm that bearing rotation is
smooth and without noise.
Install a dial gauge on the track frame as
shown, using a magnetic base.
Position the upperstructure so that the
boom aligns with the tracks facing
towards the front idlers.
Position the dial gauge so that its needle
point comes into contact with the bottom
face of the bearing outer race.
Bucket should be empty.
(3) Measurement
With the arm rolled out and bucket rolled
in, hold the bottom face of the bucket to
the same height of the boom foot pin.
Record the dial gauge reading (h1).
Lower the bucket to the ground and use
it to raise the front idler 50cm.
Record the dial gauge reading (h2).
Calculate bearing play (H) from this data
(h1 and h2) as follows.
H=h2-h1
(4) Evaluation
The measured drift should be within the following specifications.
Model
HX145CR
HX145LCR
Measurement : (h1)
Measurement : (h2)
Standard Maximum allowable
0.5 ~ 1.5
7-10
Remarks
3.0
(210-7) 7-10(1)
145ZF7MS09
Unit : mm