Yanmar 6SY Series, Operation Manual

Page: 117 / 128

PERIODIC MAINTENANCE
6SY Operation Manual
109
1. Start the engine.
2. Check for oil, coolant, fuel, air and
exhaust leaks.
3. Tighten or replace leaking connections.
4. Check the overflow holes
(Figure 22, (1)) in the block. Leakage
from these holes indicates that the
O-rings between the cylinder liners and
the crankcase are leaking.
• If coolant is running out, the O-ring is
leaking.
• If oil is running out, the liner shelf is
leaking.
5. Check that there are no leaks from the
coolant pump. If a leak occurs, replace
the pump seal or the coolant pump
assembly.
6. A small amount of leakage from the
overflow holes during the engine
break-in period is normal. (Seals and
O-rings are lubricated with soap or oil
when installed). This leakage normally
stops after time.
Figure 22
CAUTION
• ALWAYS be environmentally
responsible.
• Follow the guidelines of the
EPA or other governmental
agencies for the proper
disposal of hazardous
materials such as engine oil,
diesel fuel and engine coolant.
Consult the local authorities or
reclamation facility.
• NEVER dispose of hazardous
materials irresponsibly by
dumping them into a sewer, on
the ground or into ground
water or waterways.
• Failure to follow these
procedures may seriously
harm the environment.
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