Kubota M4N-071 Operator'S Manual Download

Page: 135 / 152

• When antifreeze comes in contact with the skin

or clothing, wash it off immediately.

• Do not mix different types of antifreeze.

The mixture can produce chemical reactions
resulting in harmful substances.

• Antifreeze

extremely

flammable

and

explosive under certain conditions. Keep fire
and children away from antifreeze.

• When draining fluids from the engine, place a

container underneath the engine body.

• Do not pour waste onto the ground, down a

drain, or into any water source.

• Also, observe the relevant environmental

protection regulations when disposing of
antifreeze.

Always use a 50/50 mix of long-life coolant and clean
soft water in KUBOTA engines.
Consult your local KUBOTA Dealer concerning coolant
for extreme conditions.

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

Premix 50% LLC with 50% clean soft water. When
mixing, stir it up well, and then pour it 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.

Vol %

antifreeze

Freezing point

Boiling point

℃

℉

℃

℉

-37

-34

108

226

At 1.013 x 10

Pa (760 mmHg) pressure (atmospheric). A high-

er boiling point is obtained by using a radiator pressure cap
which permits the development of pressure within the cooling
system.

5. Adding the LLC

a. Add only water if the mixture level is reduced by

evaporation.

b. If there is a mixture leak, add LLC of the same

manufacturer and type in the same mixture
percentage.

IMPORTANT :

• Never add any long-life coolant from a

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 every 2 years, whichever comes first.

NOTE :

• The above data represents industry standards

that necessitate a minimum glycol content in
the concentrated antifreeze.

EVERY 3000 HOURS

1. Checking turbocharger

Consult your local KUBOTA Dealer for this service.

2. Checking supply pump

Consult your local KUBOTA Dealer for this service.

3. Checking intake air heater

Consult your local KUBOTA Dealer for this service.

4. Checking and cleaning EGR

system

Consult your local KUBOTA Dealer for this service.

5. Cleaning DPF muffler

1. Remove the ash.

The longer the DPF operates, the more ash (burnt
residue) is collected in the filter. Too much ash
build-up adversely affects the DPF performance.
Consult your local KUBOTA Dealer to clean the
filter.

IMPORTANT :

• The DPF needs to be cleaned with a specific

cleaning device. Do not disassemble the
DPF for cleaning or attempt to clean it
yourself. Consult your local KUBOTA Dealer.

6. Checking DEF/AdBlue

injector

(M5N-091, M5N-111)

Consult your local KUBOTA Dealer for this service.

EVERY 3000 HOURS

PERIODIC SERVICE

M4N-071, M5N-091, M5N-111

129