PERIODIC SERVICE OF THE TRACTOR92
1. Long-life coolant (hereafter LLC) comes in several
types. Use ethylene glycol (EG) type for this engine.
2. Before employing LLC-mixed cooling water, fill the
radiator with fresh water and empty it again.
Repeat this procedure 2 or 3 times to clean up the
inside.
3. Mixing the LLC
Put the LLC in cooling water in the percentage (%) for
a target temperature. When mixing, stir it up well, and
then fill into the radiator.
4. The procedure for the mixing of water and antifreeze
differs according to the make of the antifreeze and the
ambient temperature. Refer to SAE J1034 standard,
more specifically also to SAE J814c.
A When mixing the antifreeze with water, the anti-freeze
mixing ratio is 50%.
D At 1.013 x 10 Pa (760mmHg) pressure (atmospheric).
A higher boiling point is obtained by using a radiator
pressure cap which permits the development of
pressure within the cooling system.
5. Adding the LLC
(1) Add only water if the mixture reduces in amount
by evaporation.
(2) If there is a mixture leak, add the LLC of the same
manufacturer and type in the same mixture
percentage.
D Never add any long-life coolant of different
manufacturer. (Different brands may have
different additive components, and the engine
may fail to perform as specified.)
6. When the LLC is mixed, do not employ any radiator
cleaning agent. The LLC contains anticorrosive agent.
If mixed with the cleaning agent, sludge may build up,
adversely affecting the engine parts.
7. Kubota's genuine long-life coolant has a service life of
2 years. Be sure to change the coolant every 2000
hours or 2 years whichever comes faster.
A The above data represent industry standards that
necessitate a minimum glycol content in the
concentrated antifreeze.
A When the coolant level drops due to evaporation, add
water only to keep the antifreeze mixing ratio less than
50%. In case of leakage, add antifreeze and water in
the specified mixing ratio before filling in to the
radiator.
A Anti-freeze absorbs moisture. Keep unused anti-
freeze in a tightly sealed container.
A Do not use radiator cleaning agents when anti-freeze
has been added to the coolant. (Anti-freeze contains
an anti-corrosive agent, which will react with the
radiator cleaning agent forming sludge which will
affect the engine parts.)
EVERY 3000 HOURS
BChecking Injection Pump
Consult your local KUBOTA Dealer for this service.
EVERY 1 YEAR
BChecking Radiator Hoses and Clamps
To avoid personal injury:
A Be sure to stop the engine and remove the key
before checking radiator hose and clamp.
1. If hose clamps are loose or water leaks, tighten bands
securely.
2. Replace hoses and tighten hose clamps securely, if
radiator hoses are swollen, hardened or cracked.
3. Properly dispose of used coolant.
Replace hoses and hose clamps if you checked and
found that hoses are swollen, hardened or cracked.
C Precaution at Overheating
Take the following actions in the event the coolant
temperature be nearly or more than the boiling point, what
is called "Overheating".
1. Stop the machine operation in a safe place and keep
the engine idling unloaded.
2. Don't stop the engine suddenly, but stop it after about
5 minutes of unloaded idling.
3. Keep yourself well away from the machine for an
additional 10 minutes or until the steam has blown out.
Vol %
Anti-freeze
Freezing Point Boiling Point*
40
50
-24
-37
-12
-34
106
108
222
226
(1) Radiator hoses (2 pcs)
(2) Hose clamps (4 pcs)
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