SANY SY155U, Operation And Maintenance Manual, Page: 161 / 192

MAINTENANCE
5-51
SY155U Excavator OMM
0003579
Figure 5-115
7. Position yourself to the side of the grease valve (4).
NOTE: Do not turn the grease fitting (5).
8. Using the proper tools, slowly turn the grease valve
(4) counterclockwise in 90° (1/4 turn) increments to
decrease track tension.
9. If the grease does not come out smoothly, move the
machine back and forth for a short distance.
10. Check the track tension. When the tension is correct,
turn the grease valve (4) clockwise to tighten it.
CAUTION
• If the track remains too tight after opening the
track-tension grease valve, or if the track remains
too loose after adding grease to the track-tension
grease fitting, never attempt to remove the track
or remove the track adjuster.
• Pressurized grease inside the track adjuster may
cause serious injury if any component is
disassembled before pressure is released.
Failure to follow these precautions could result in
injury.
11. Drive the machine forward at low idle speed for a
distance equivalent to one full revolution of the track.
12. Park the machine.
13. Check the track tension again. Adjust if it is still out of
the acceptable range.
Final Drive
Check the Final Drive Hoses
1. Prepare the machine for checks and inspections.
See “Maintenance Safety” on page 2-5.
2. Open the appropriate access covers or compartment
doors. See “Doors, Panels, Covers, and Filler Cap”
on page 4-5.
3. Turn the battery disconnect switch to OFF. See
“Battery Disconnect Switch” on page 3-15.
0004190
Figure 5-116
4. Remove the three fasteners (1) and remove the final
drive cover (2).
0004191
Figure 5-117
5. Inspect the final drive to make sure that all hydraulic
hoses (3) are properly tightened to specification.
NOTE: Replace any damaged or missing fasteners and
tighten any loose fasteners. Use anaerobic
thread-lock compound when reinstalling loose
fasteners and installing new fasteners.
5
4
1
1
2
1
3