Yanmar 4TNV98, Service Manual

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4TNV98 & 4TNE98 Diesel Engine Section 3. Engine 64
CAUTION
Only use the engine oil specified. Other engine
oils may affect warranty coverage, cause
internal engine components to seize and / or
shorten engine life.
Prevent dirt and debris from contaminating the
engine oil. Carefully clean the oil cap/dipstick
and the surrounding area before you remove the
cap.
NEVER mix different types of engine oil. This
may adversely affect the lubricating properties
of the engine oil.
NEVER overfill. Overfilling may result in white
exhaust smoke, engine overspeed or internal
damage.
CAUTION
Only use the engine coolant specified. Other
engine coolants may affect warranty coverage,
cause an internal buildup of rust and scale
and/or shorten engine life.
Prevent dirt and debris from contaminating the
engine coolant. Carefully clean the radiator cap
and the surrounding area before you remove the
cap.
NEVER mix different types of engine coolants.
This may adversely affect the properties of the
engine coolant.
CAUTION
Identify all parts and their location using an
appropriate method. It is important that all parts
are returned to the same position during the
reassembly process.
CAUTION
Any part which is found defective as a result of
inspection or any part whose measured value
does not satisfy the standard or limit must be
replaced.
CAUTION
Any part determined to not meet the service
standard or limit before the next service, as
determined from the state of current rate of wear,
should be replaced even though the part
currently meets the service standard limit.
CAUTION
Remove or install the high-pressure fuel
injection lines as an assembly whenever
possible. Disassembling the high-pressure fuel
injection lines from the retainers or bending any
of the fuel lines will make it difficult to reinstall
the fuel lines.
CAUTION
Do not loosen or remove the four bolts retaining
the fuel injection pump drive gear to the fuel
injection pump hub. Do not disassemble the fuel
injection pump drive gear from the hub. Correct
fuel injection timing will be very difficult or
impossible to achieve.