Engine Coolant Specifications; Filling Radiator With Engine Coolant - Yanmar 2TNV70 Service Manual

GENERAL SERVICE INFORMATION

Engine Coolant Specifications

Use a Long Life Coolant (LLC) or an Extended Life
Coolant (ELC) that meets or exceeds the following
guidelines and specifications:
Additional Technical Coolant
Specifications:
• ASTM D6210, D4985 (US)
• JIS K-2234 (Japan)
• SAE J814C, J1941, J1034 or J2036
(International)
Alternative Engine Coolant
If an Extended or Long Life Coolant is not available,
you may use an ethylene glycol or propylene glycol
based conventional coolant (green).
Notes:
1. ALWAYS use a mix of coolant and water.
NEVER use water only.
2. Mix coolant and water per the mixing
instructions on the coolant container.
3. Water quality is important to coolant
performance. Yanmar recommends that soft,
distilled, or demineralized water be used to
mix with coolants.
4. NEVER mix extended or long life coolants
and conventional (green) coolants.
5. NEVER mix different types and / or colors of
extended life coolants.
6. Replace the coolant every 1000 engine hours
or once a year.

Filling Radiator with Engine Coolant

Fill the radiator and reserve tank as follows. This
procedure is for filling the radiator for the first time
or refilling it after it is flushed. Note that a typical
radiator is illustrated.
4-18
(5)
(3)
(6)
(4)
(1)
Figure 4-7
1. Check to be sure the radiator drain plug is
installed and tightened or the drain cock
(Figure 4-7, (1)) is closed. Also make sure the
coolant drain plug (Figure 4-8, (1)) in the
cylinder block is closed.
(1)
Figure 4-8
2. Remove the radiator cap (Figure 4-7, (2)) by
turning it counterclockwise about 1/3 of a turn.
3. Pour the engine coolant slowly into the radiator
until it is even with the lip of the engine coolant
filler port. Make sure that air bubbles do not
develop as you fill the radiator.
4. Reinstall the radiator cap (Figure 4-7, (2)).
Align the tabs on the back of the radiator cap
with the notches on the engine coolant filler
port. Press down and turn the cap clockwise
about 1/3 of a turn.
TNV IDI Service Manual
Engine Coolant
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