Changing Coolant; Remedies For Rapid Coolant Loss; Checking Radiator Hoses And Clamps; Precaution At Overheating - Kubota GL7000-CAN Operator's Manual

26 PERIODIC SERVICE
A When coolant is added, coolant level may drop the first
time the engine is started. Stop the engine, and add
coolant if necessary.
BChanging Coolant
1. To drain coolant, always remove both drain plugs and
simultaneously open the radiator cap as well. With the
radiator cap kept closed, the coolant will not drain
completely. Dispose of used coolant properly.
2. Remove the overflow pipe of the radiator pressure cap
to drain the reserve tank.
3. Prescribed coolant volume
Model
GL7000
[Engine model: Z482]
GL11000
[Engine model: D722]
include reserve tank 0.6 L (0.63 U.S.qts.)
4. An improperly tightened radiator cap or a gap between
the cap and the seat increases loss of coolant.
5. Coolant (Water and anti-freeze)
Season
All seasons
BRemedies for Rapid Coolant Loss
1. Check for dust and dirt between the radiator fins and
cooling tube. Clean the fins and the tubes as if
necessary.
2. Check the tension of the fan belt. If loose, tighten it
securely.
3. Check the internal blockage in the radiator cooling
tubes. If scale forms in the tubes, clean with the scale
inhibitor or equivalent.
L (U.S.qts.)
Capacity
3.7 (3.9)
4.1 (4.3)
Coolant
Pure water and anti-freeze
(See "Anti-Freeze" in
"RADIATOR" section)
BChecking Radiator Hoses and Clamps
To avoid personal injury:
A Be sure to check radiator hoses and hose
clamps periodically. If radiator hoses are
damaged or coolant leaks out, overheating can
occur.
Check to see if radiator hoses are properly fixed every 200
hours of operation or 6 months, whichever comes first.
1. If hose clamps are loose or water leaks, tighten hose
clamps securely.
2. Replace hoses and hose clamps if radiator hoses are
swollen, hardened or cracked.
Replace hoses and hose clamps every 2 years, or earlier
as required, if hoses are found to be swollen, hardened or
cracked.
(1) Radiator hose
(2) Hose clamp
BPrecaution at Overheating
The event that the coolant temperature is nearly or more
than the boiling point is called "OVERHEATING".
While running, make the following checks to see that all
parts are working correctly. If anything is unusual,
inspect it, referring to the relevant description in
"MAINTENANCE" and "PERIODIC SERVICE" section.
C Coolant
If the coolant temperature warning lamp lights up or if
steam or coolant does not stop squirting from the radiator
overflow pipe, turn off the load and keep the engine
idling (COOLING-DOWN) for at least 5 minutes to let it
cool down gradually. Then stop the engine and take the
following inspection and servicing.
1. Check to see if the coolant runs short or if there is any
coolant leak;