Specifications

Maintenance—Every 500 Hours
TX,80,JC1140 –19–23MAY96–1/1
CHECK COOLANT
T101279 –19–14MAY96
TS281 –UN–23AUG88
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CAUTION: Prevent possible injury from hot
spraying water. DO NOT remove radiator cap
unless the engine is cool. Then loosen cap
slowly to the stop. Release all pressure before
removing cap.
1. Turn cap slowly to the stop to release pressure. Then
remove cap.
NOTE: A coolant strip test, available from your dealer,
provides a simple, effective way to check freeze
point and molybdate/nitrite levels. These results
can be compared to the SCA chart to determine
the amount of coolant conditioner in your system.
2. Add TY16004 John Deere Coolant Conditioner or
equivalent non-chromate conditioner/rust inhibitor,
following instructions on container. Drain enough
coolant from the radiator to allow room for the
conditioner.
SPECIFICATIONS
544G Cooling system capacity Approx. 24 L (25 qt)
624G Cooling system capacity Approx. 25 L (26 qt)
644G Cooling system capacity Approx. 28 .5 L (30 qt)
NOTE: Add conditioner every 500 hours or 6 months, or
if you replace 1/3 or more of coolant.
John Deere Liquid Coolant Conditioner does not
protect against freezing.
DO NOT add John Deere liquid coolant
conditioner to a cooling system already equipped
with an operational filter conditioner system. Too
much conditioner in a cooling system may cause
silicate-dropout. When this happens, a gel-type
despot is created which can restrict coolant
passages in the radiator and engine, resulting in
engine overheating.
80–5
PN=142