Buhler 535 - Manual (Page 182)

435/485/535
4-49
Section 4 - Lubrication & Maintenance
Every 2000 Hours or 2 Years
The coolant added to the engine must meet specific
requirements . Use coolant from one of the following
sources:
NOTE: Factory fill is a fully formulated coolant mixture,
(pink in color). Propylene and ethylene glycol can be
mixed in the cooling system.
Refill the cooling system using a low silicate
antifreeze which meets Engineering Standard
GM 6038-M, or which contains no more than 0 .%
anhydrous alkali metasilicate and meets either
Engineering Standard GM 825-M or GM 899-M,
which are performance specifications .
Use soft water in the coolant mixture . Contaminants
in hard water neutralize the corrosion inhibitor
components . Water must not exceed 300 ppm
hardness or contain more than 00 ppm of either
chloride or sulphate .
Antifreeze must be used in any climate for both
freeze and boiling point protection . Cummins
Engine Company, Inc . recommends a 50%
concentration level, 40% - 60% range of ethylene
glycol or propylene glycol inmost climates .
Antifreeze
at 68% concentration provides
the maximum freeze protection and must never
be exceeded under any condition . Antifreeze
protection decreases above 68%,
NOTE: Propylene glycol antifreeze protection levels
CANNOT be checked using the same hydrometer as
would be used with ethylene glycol antifreeze.
You must check the concentration level using a
refractometer. This tool is available from your Buhler
Versatile dealer under P/N CC2806. Both propylene
and ethylene glycol protection levels (of a mixture of
both) can be measured with the refractometer.
Once the protection level of the coolant is determined
(ratio of water to antifreeze), the mixture must contain
one unit of Cummins DCA4 (dry chemical additive)
for every gallon of mix . A DCA unit is equal to 42 .5
g ( .5 dry ounces) or 20 ml (4 liquid ounces) . Your
Buhler Versatile dealer can assist you in obtaining the
DCA4 additive .
IMPORTANT: Failure to maintain the DCA4 in the
cooling system will cause cooling system corrosion
and engine failure.
IMPORTANT: Check the concentration of DCA4 with
a test kit, available from Cummins and Fleetguard
through your Buhler Versatile dealer.
IMPORTANT: Do not add cold coolant to a hot engine.
Engine castings can be damaged. Allow the engine to
cool to below 50°C (120°F).
Start and run the engine until normal operating
temperature is reached . Stop the engine and allow the
coolant to cool .
NOTE: The coolant level will drop as coolant is pumped
around the system.
Remove the radiator cap and add coolant to the
radiator to bring the coolant level to the bottom of the
filler neck . Install the radiator cap .
NOTE: If the engine is not going to be operated
immediately following the coolant and filter change,
run the engine for one hour to ensure that the chemical
conditioner within the system is dispersed into the
cooling system.
The coolant capacity for the 435, 485 and 535 tractor
is 72 L (9 Gal) .
Ethylene Glycol Propylene Glycol
40%
50%
60%
68% -23°C (-0°F)
-37°C (-34°F)
-54°C (-65°F)
-7°C (-90°F) -2°C (-6°F)
-33°C (-27°F)
-40°C (-56°F)
-63°C (-82°F)