SY50U Excavator OMM
Maintenance
SANY
Operation and Maintenance Manual — 0120
5-55
TABLE OF
CONTENTS
INTRODUCTION
SAFETY
MACHINE
CONTROLS
MACHINE
OPERA
TION
MAINTENANCE
SPECIFICA
TIONS
OPTIONAL
EQUIPMENT
Track Assembly
Check the Track Tension
1. Use the bucket to lift the track on one side. Place an appropriate supporting device under the frame.
2. Rotate the raised track one full revolution.
3. Prepare the machine for service. See “Maintenance Safety” on page
4. Use a straightedge to measure the track sag (1) between the tread of the roller and the rail surface of the track.
5. Normal track sag is 0.4
in.–0.8 in. (10 mm–20
mm) for rubber tracks and 0.6 in.–1.0 in. (15 mm–25 mm) for
steel tracks. If the track sag is outside of this range, the track tension must be adjusted.
Adjust the Track Tension
Increase the Track Tension
NOTICE!
Remove gravel or mud buildup between the sprocket and the track before checking track
tension.
WARNING!
•
The track tension grease fitting is under extreme pressure and grease exiting the valve can
cause serious injury.
•
Do not stand directly in front of the track tension grease fitting valve when loosening the
valve.
•
If track tension does not release after opening the grease valve, never attempt to remove
the track or disassemble any component before the pressure is released.
Failure to follow these warnings could result in death or serious injury.
Fig. 5-49
0001642
1
