Kubota D722-E3, Operator'S Manual

Page: 34 / 233

19 PERIODIC SERVICE
EN
GLISH
*At 1.013 x 10 Pa (760 mmHg) 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 coolant level reduces in the
cooling system by evaporation.
(2) If there is a coolant leak, add the LLC of the same
manufacturer and type in the same coolant
percentage.
*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 anti-corrosive
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 2 years.
A The above data represent industry standards that
necessitate minimum glycol content in the
concentrated anti-freeze.
B
Radiator cement
As the radiator is solidly constructed, there is little
possibility of water leakage. Should this happen,
however, radiator cement can easily fix it. If leakage is
serious, contact your local KUBOTA dealer.
AIR CLEANER
As the element of the air cleaner employed on this engine
is a dry type, never apply oil to it.
1. Open the evacuator valve once a week under ordinary
conditions-or daily when used in a dusty place-to get
rid of large particles of dust and dirt.
2. Wipe the inside air cleaner clean with cloth or the like
if it is dirty or wet.
3. Avoid touching the element except when cleaning.
4. When dry dust adheres to the element, blow
compressed air from the inside turning the element.
Pressure of compressed air must be under 205 kPa
(2.1 kgf/cm , 30 psi).
5. Replace the element every year or every six
cleanings.
A Make sure the hooking clip for cover for the element is
tight enough. If it is loose, dust and dirt may be
sucked, wearing down the cylinder liner and piston
ring earlier and thereby resulting in poor power output.
Vol %
Anti-freeze
Freezing Point Boiling Point *
50 -37 -34 108 226
(1) Air cleaner body
(2) Element
(3) Cover
(4) Evacuator valve
(5) "TOP" mark