Manitowoc Published 11-22-17, Control # 257-02 7-15
MLC300 SERVICE/MAINTENANCE MANUAL POWER TRAIN
4. Attach the quick-drain drainer to the quick-drain
valve (7). The fluid will drain.
5. Once the cooling system has completely drained, refill it.
6. Dispose of the drained coolant according to local
environmental regulations.
7. Add the supplemental coolant additive (SCA) to the
radiator through the fill cap opening.
8. Add a 50-50 mix of water and ethylene glycol to the
radiator.
NOTE: The maximum fill rate is 19 L/min (5 GPM).
9. Once coolant is visible at the full cold mark on the level
decal (5), wait 2 to 3 minutes, then add coolant again as
needed.
10. Check that the cab heater valves under the cab are
open.
11. In the cab, place the heat control to maximum.
NOTE: It is not necessary to turn on the heater fan.
12. Start the engine and run it until the thermostat opens at a
coolant temperature of 83 to 93°C (181 to 199°F).
13. Reduce engine speed to low idle for 2 minutes to cool
down the engine components, then stop the engine.
14. Once the engine has cooled, add coolant until it is visible
at the full cold mark on the level decal (5).
15. Install the fill cap (1) and install the enclosure cover (4).
CAUTION
Maintain Coolant Additive!
A proper concentration of supplemental coolant additive
(SCA) must be maintained to prevent engine damage.
Check the SCA concentration according to the schedule
in the engine manufacturer’s manual and per the
manufacturer’s warnings, cautions and instructions.
WARNING
Chemical and Burn Hazard!
Coolant could spray from an open radiator cap while the
engine is running. Do not stand near the radiator while
operating the engine with the pressure cap removed.
Item Description
1 Fill Cap—1.03 bar (15 PSI)
2 Expansion Tank
3 Sight Gauge
4 Enclosure Cover
5Level Decal
6 Radiator
7 Quick-Drain Valve
FIGURE 7-13
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