General Service Information - Yanmar 2TNV70 Service Manual

Safety Precautions
NOTICE
• NEVER attempt to modify the engine's design or
safety features such as defeating the engine
speed limit control or the fuel injection quantity
control.
• Failure to comply may impair the engine's safety
and performance characteristics and shorten the
engine's life. Any alterations to this engine may
affect the warranty coverage of your engine.
Yanmar Limited Warranty on page 2-3.
NOTICE
Protect the air cleaner, turbocharger (if equipped)
and electric components from damage when you
use steam or high-pressure water to clean the
engine.
NOTICE
NEVER use high-pressure water or compressed air
at greater than 28 psi (193 kPa; 19 686 mmAq) or a
wire brush to clean the radiator fins. Radiator fins
damage easily.
NOTICE
NEVER attempt to adjust the low or high idle speed
limit screw. This may impair the safety and
performance of the machine and shorten its life. If
the idle speed limit screws require adjustment, see
your authorized Yanmar industrial engine dealer or
distributor.
NOTICE
The tightening torque in the Standard Torque
Chart in General Service Information should be
applied only to the bolts with a "7" head. (JIS
strength classification: 7T)
• Apply 60% torque to bolts that are not
listed.
• Apply 80% torque when tightened to
aluminum alloy.
TNV IDI Service Manual
NOTICE
Establish a periodic maintenance plan according to
the engine application and make sure you perform
the required periodic maintenance at intervals
indicated. Failure to follow these guidelines will
impair the engine's safety and performance
characteristics, shorten the engine's life and may
affect the warranty coverage on your engine. See
Yanmar Warranties section.
Consult your authorized Yanmar dealer or
distributor for assistance when checking items
marked with a .
NOTICE
If the fuel filter / water separator is positioned
higher than the fuel level in the fuel tank, water may
not drip out when the fuel filter / water separator
drain cock is opened. If this happens, turn the air
vent screw on the top of the fuel filter / water
separator 2-3 turns counterclockwise.
Be sure to tighten the air vent screw after the water
has drained out.
NOTICE
• When the engine is operated in dusty conditions,
clean the air cleaner element more frequently.
• NEVER operate the engine with the air cleaner
element(s) removed. This may allow foreign
material to enter the engine and damage it.
NOTICE
The maximum air intake restriction, in terms of
differential pressure measurement, must not
exceed 0.90 psi (6.23 kPa; 635 mmAq). Clean or
replace the air cleaner element if the air intake
restriction exceeds the above mentioned value.
SAFETY
3-11