SANY SY155U, Operation And Maintenance Manual, Page: 158 / 192

5-48
MAINTENANCE
SY155U Excavator OMM
Track Frame
0003653
Figure 5-107
Track Inspection and Lubrication
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.
NOTE: Use a pry bar to shift and/or lift the track shoes as
needed to perform this procedure.
4. Check the track (1) for damage, wear, unevenness,
looseness, raised sections, tightening of track shoes,
or any other abnormalities. Replace track shoes as
necessary.
5. Check the idler (6), carrier roller (2), and track rollers
(5) for wear and proper operation. If any are
damaged, contact a SANY dealer for
repair/replacement.
6. Check the sprocket (3) for wear and proper
operation. If damaged, contact a SANY dealer for
repair/replacement.
7. Make sure the track groove is fully engaged over the
idler (6).
8. Check for visible damage to final drive (4) and its
cover mounting bolts.
9. Remove as much accumulated dirt as possible from
the undercarriage. Excess dirt requires more energy
to operate the tracks and causes severe wear of the
moving parts.
Check the Track Shoe Fasteners
0000498
Figure 5-108
1. Prepare the machine for checks and inspections.
See “Maintenance Safety” on page 2-5.
2. Turn the battery disconnect switch to OFF. See
“Battery Disconnect Switch” on page 3-15.
3. Make sure that all of the retaining fasteners (1) are
properly in place at each pair of track shoes (2) and
are not broken, bent, damaged, or loose.
4. Replace any fasteners that are broken, bent, or
damaged. Tighten any loose fasteners.
1 Track 4 Final drive
2 Carrier roller 5 Track roller
3 Sprocket 6 Idler
1
2
3
6
4
5
1
2