134 S850 Operation & Maintenance Manual
ENGINE COOLING SYSTEM (CONT’D)
Checking Level
Remove the rear grille. (See REAR GRILLE on Page
117.)
Figure 213
Check coolant level using the level markers (Item 2)
[Figure 213] on the tank. Coolant must be between top
and bottom level markers when the engine is cold.
NOTE: The loader is factory filled with propylene
glyc
ol coolant (purple color). DO NOT mix
propylene glycol with ethylene glycol.
Use a refractometer to check the condition of propylene
gly
col in your cooling system.
Install the rear grille.
AVOID ENGINE DAMAGE
Always use the correct ratio of water to antifreeze.
Too much antifreeze reduces cooling system
efficiency and may cause serious premature engine
damage.
Too little antifreeze reduces the additives which
protect the internal engine components; reduces the
boiling point and freeze protection of the system.
Always add a premixed solution. Adding full strength
concentrated coolant can cause serious premature
engine damage.
I-2124-0497
Removing And Replacing Coolant
For the service interval for replacing the engine
coolant (See SERVICE SCHEDULE on Page 106.)
Open the rear door and remo
ve the rear grille.
Remove the coolant fill
cap (Item 1) [Figure 213].
Figure 214
Attach a hose to the coolant drain petcock (Item 1)
[Figure 214] located to the left of the oil filter ass
embly.
Open the petcock and drain the coolant into a container.
Close t
he petcock and remove the hose. Recycle or
dispose of coolant in an environmentally safe manner.
Close the rear door.
Mix new coolant in a separate container. (See Capacities
on Page 200.)
The correct mixture of coolant to provide a -37°C (-34°F)
f
reeze protection is 5 L propylene glycol mixed with 4,4 L
of water OR 1 U.S. gal propylene glycol mixed with 3.5 qt
of water.
Add premixed coolant, 47% water and 53% propylene
g
lycol to the coolant tank until the coolant level reaches
the lower marker on the tank [Figure 213].
Install the coolant fill cap.
NOTE: When installing the coolant fill cap, the cap
mus
t be tightened until it clicks.
Run the engine until it is at operating temperature. Stop
t
he engine. Check the coolant level when cool. Add
coolant as needed.
Install the rear grille.
Dealer Copy -- Not for Resale
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