Maintenance
SY215C LC/SY225C LC Excavator OMM
5-44
Operation and Maintenance Manual — 1219
SANY
Check the Engine Belts
1. Prepare the machine for service. See “Maintenance
2. Open the engine cover (1).
3. Locate the air conditioner compressor (2) and alternator
belts (3) and inspect the belts for items listed below:
•
Abrasion: The belt appears shiny, glazed, or fabric
is exposed. This is a sign that the belt is in contact
with an object, such as a flange or fastener.
•
Chunk-out: Chunks of rubber material have broken
off from the belt. The belt can fail at any moment.
Heat, age, and stress are the primary contributors.
•
Pulling: Belt material is sheared off from the ribs.
Lack of tension, misalignment, worn pulleys, or a
combination of these are factors.
•
Improper installation: A belt rib begins separating
from the strands. If left unattended, the cover will
often separate, causing the belt to unravel.
•
Cracking: Small, visible cracks along the length of
a rib or ribs. With continuous exposure to high
temperatures, the stress of bending around the
pulley leads to cracking.
•
Misalignment: Side walls of the belt may appear glazed, or the edge-cord may become frayed. A
noticeable noise may result.
Fig. 5-43
1
Fig. 5-44
2
3
Содержание SY215C LC
Страница 2: ...This Page Intentionally Left Blank ...
Страница 271: ...This Page Intentionally Left Blank ...