SANY SY155U, Operation And Maintenance Manual, Page: 174 / 192

5-64
MAINTENANCE
SY155U Excavator OMM
Check the Upper Structure and
Undercarriage
0003551
Figure 5-153
The machine consists of two major component groups:
• The undercarriage with its various components and
assemblies.
• The upper structure with its various components and
assemblies.
Check all identified structural components for cracks or
distortion. Notify a SANY dealer if any cracks or distortion
are found.
Bucket
Replace the Bucket Teeth
WARNING
• Unexpected machine movement can be
dangerous when replacing the bucket teeth.
Place the bucket on a stable work surface. Shut
down the engine and lock out the control levers.
• Roll pins may eject with extreme force when
removed. Do not allow anyone to stand in front of
the pins during pin removal.
• Metal fragments from roll pins and tools may
break off during roll pin removal and installation.
Wear safety goggles, gloves, and other personal
protective equipment (PPE) to prevent serious
injury.
Failure to follow these warnings could result in
death or serious injury.
NOTE: Bucket teeth must be replaced before the bucket
tooth adapter wears out.
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.
0002350
Figure 5-154
3. Select a stable work surface. Move the hydraulic
controls to the neutral position. Keep the bottom of
the bucket level on a wooden block (1).
0002351
Figure 5-155
4. Remove the roll pins (2) and worn bucket teeth (3).
NOTE: New bucket teeth and roll pins must be installed in
the reverse order of removal.
0002352
Figure 5-156
5. Install new bucket teeth (4) and roll pins (5) in the
reverse order of removal.
1 Cab 4 Swing turntable
2 Covers and doors 5 Boom
3 Track 6 Arm
1
2
3
5
6
4
1
2 3
5
4