POWER TRAIN MLC80A-1/MLC90A-1/MLC100A-1/MLC100-1 SERVICE/MAINTENANCE MANUAL
7-10
Published 10-09-2020, Control # 259-06
ENGINE RADIATOR
Checking Coolant Level
Daily (at start of shift) or Every 8 Hours of Engine
Operation (whichever occurs first) — when coolant is
cold
For service other than checking the coolant level, refer to the
engine manufacturer’s manual for instructions.
See Figure 7-9
.
1. The coolant must be at the middle of the sight gauge (2).
Add coolant if necessary.
2. Stop the engine and wait until the coolant temperature is
below 50°C (120°F).
3. Remove the access cover.
4. Take care to prevent being burned by hot coolant as
follows.
a. Place a heavy cloth over the fill cap (1).
b. Turn the fill cap counterclockwise until the pressure
starts to release (indicated by a hissing sound).
c. Wait for the pressure to escape completely.
d. Turn the fill cap fully counterclockwise and remove
it.
5. Slowly add a 50/50 coolant mixture of water and
ethylene glycol until the coolant is at the middle of the
sight gauge (2).
6. Securely install the fill cap (1).
7. Install the access cover.
Changing Coolant
Biennially or Every 2000 Hours of Engine Operation
(whichever occurs first)
See Figure 7-9
.
Draining
1. Stop the engine and lockout-tagout the crane.
2. Attach a drain hose to the drain valve (3). Place the
other end of the drain hose into a suitable container that
can hold 30 L (8 gal) of coolant.
3. Take care to prevent being burned by hot coolant as
follows.
a. Wait until the coolant temperature is below 50°C
(120°F).
b. Place a heavy cloth over the fill cap (1).
c. Turn the fill cap counterclockwise until the pressure
starts to release (indicated by a hissing sound).
d. Wait for the pressure to escape completely.
e. Turn the fill cap fully counterclockwise and remove
it.
4. Open the drain valve (3).
5. Close the drain valve once the cooling system has
completely drained,
6. Dispose of the drained coolant according to local
environmental regulations.
7. Inspect the cooling system
• Check for damaged hoses and loose or damaged
hose clamps. Replace as required.
• Check the radiator for leaks, damage, and dirt
buildup. Clean and replace as required.
Flushing
If it is necessary to flush the cooling system, refer to the
Engine Manufacturer’s Manual for detailed instructions.
Filling
1. The system has a maximum fill rate of 19 L (5 gal) per
minute. Fill the system slowly to allow air to escape.
WARNING
Burn Hazard!
Hot and pressurized coolant can burn, causing serious
injury. Do not remove the coolant fill cap while the coolant
is hot. Wait for it to cool to below 50°C (120°F).
Material Hazard!
Coolant is toxic. Do not ingest. Dispose of in accordance
with all local and other applicable environmental
regulations.
CAUTION
Avoid Engine Damage!
The required coolant level must be maintained to prevent
engine damage.
The required supplemental coolant additive (SCA)
concentration must be maintained to prevent engine
damage.
SCA must be added to the cooling system to prevent liner
pitting and for scaling protection.
Check the SCA concentration according to the schedule
in the engine manufacturer’s operator manual and per the
manufacturer’s warnings, cautions, and instructions.
To Next Page
Loading...
Need help?
General
