POWER TRAIN MLC165-1 SERVICE/MAINTENANCE MANUAL
7-12
Published 05-26-17, Control # 238-02
Draining and Filling Cooling System
Drain the cooling system every 1,000 hours of operation or
semi-annually (whichever occurs first).
The radiator is equipped with a quick-drain valve (2) which
requires use of the quick-drain drainer assembly shown in
Figure 7-10
. The quick-drain drainer assembly is stored in
the parts box supplied with the crane.
1. Insert the quick-drain hose (6) into a suitable container
which will hold 15 gal (57 L) of drained coolant.
2. Remove the cap (1) and attach the quick-drain drainer
(4) to the quick-drain valve (2).
3. The fluid will drain.
4. Remove the quick-drain drainer (4) from the quick-drain
valve (2) when the system is completely drained.
5. Install the cap (1).
6. Thoroughly clean the quick-drain hose and store the
assembly.
7. Check that the cab heater valves on the engine are
open.
8. In the cab, place the heat control to maximum.
NOTE It is not necessary to turn on the heater fan.
9. Open the access cover and remove the radiator fill cap
(Figure 7-9, page 7-11
).
10. Add a coolant additive (SCA) to the radiator.
11. Add a 50-50 mix of water and ethylene glycol to the
radiator.
NOTE The maximum fill rate is 3 GPM (11.4 liters/min).
NOTE The capacity of the cooling system is
approximately 13 gal (49 L).
Figure 7-10. Radiator Drain Locations
Item Description
1Cap
2 Quick-Drain Valve (drains entire system)
3 Drain Valve (drains only radiator)
4 Quick-Drain Drainer
5 Hose Clamp
6 Hose: 3/4 in (19 mm) Inside Diameter by
10 ft (3,0 m) Long
M100517
1
2
3
4
6
5
CAUTION
Maintain Coolant Additive
A proper concentration of a 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.
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