Kubota L3540 Workshop Manual page 64

L3540, L4240, L5040, L5240, L5740, WSM
Flushing Cooling System and Changing Coolant
CAUTION
• 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 plug (3) and remove
the radiator cap (1). The radiator cap (1) must be removed to
completely drain the coolant.
3. After all coolant is drained, close the drain plug (3).
4. Fill with clean water and cooling system cleaner.
5. Follow directions of the cleaner instruction.
6. After flushing, fill with clean water and anti-freeze until the coolant
level is just below the port. Install the radiator cap (1) securely.
7. Fill with coolant up to "FULL" mark on the recovery tank.
8. Start and operate the engine for few minutes.
9. Stop the engine and let cool. Check coolant level of recovery
tank (2) and add coolant if necessary.
NOTE
• On cabin type machines, fresh water circulates through the
heater. This means that one more liter or so of fresh water
is required.
In changing fresh water, pour fresh water up to the filter port
of the recovery tank.
temperature control lever toward WARM), and run the
engine for a while in order to warm fresh water. Then stop
the engine.
When fresh water has cooled down, some of the fresh water
in the recovery tank is sucked. Now the recovery tank is
appropriately filled with fresh water.
IMPORTANT
• Do not start engine without coolant.
• Use clean, coolant and anti-freeze to fill the radiator and
recovery tank.
• When the anti-freeze is mixed with water, the anti-freeze
mixing ratio must be less than 50 %.
• Securely tighten radiator cap.
improperly fitted, water may leak out and the engine could
overheat.
• Refer to "4. LUBRICANTS, FUEL AND COOLANT" at "G.
GENERAL" section
L3540
L4240
Coolant capacity (with
recovery tank)
L5040
L5240
L5740
(1) Radiator Cap
(2) Recovery Tank
(3) Drain Plug
G-42
G GENERAL
Turn ON the heater (shift the
If the cap is loose or
7.5 L
7.9 U.S.qts
6.6 Imp.qts
8.2 L
8.7 U.S.qts
7.2 Imp.qts
A : FULL
B : LOW
W1037510
KiSC issued 04, 2010 A