Kubota ZD221, Operator'S Manual

Page: 77 / 95

PERIODIC SERVICE 60
ENGLISH
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.
*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 a minimum glycol content in the
concentrated anti-freeze.
A
When the coolant level drops due to evaporation, add
water only to keep the anti-freeze mixing ratio less
than 50%. In case of leakage, add anti-freeze and
water in the specified mixing ratio before filling in to the
radiator.
EVERY 1500 HOURS
B
Checking Fuel Injection Nozzle (Injection
Pressure)
Consult your local KUBOTA Dealer for this service.
EVERY 3000 HOURS
B
Checking Injection Pump
Consult your local KUBOTA Dealer for this service.
EVERY 1 YEAR
B
Replacing Air Cleaner Primary Element
and Secondary Element
(See "Cleaning Air Cleaner Primary Element" in "EVERY
100 HOURS" in "PERIODIC SERVICE" section.)
A
To prevent serious damage to the engine, use only a
KUBOTA genuine filter.
[How to remove the secondary element]
1. While turning slightly, pull out the secondary element.
B
Flushing Cooling System and Changing
Coolant
To avoid personal injury:
A
Do not remove the radiator cap when the
engine is hot. Then loosen cap slightly to the
stop to relieve any excess pressure before
removing cap completely.
1. Stop the engine and let cool down.
2. To drain the coolant, open the radiator drain cock and
remove the radiator drain plug and remove radiator
cap. The radiator cap must be removed to completely
drain the coolant.
(1) Secondary element