Terex TA30 Maintenance Manual page 227

6. It is okay to estimate a value between colour
blocks, but if uncertain about the colour match, pick
the lower numbered block.
7. Determine where the Sodium Molybdate level
intersects the Sodium Nitrite level on the chart. The
amount of SCA units per litre in the cooling system is
given where the Sodium Molybdate row intersects the
Sodium Nitrite column.
Note: For best results follow test times carefully.
Use a stopwatch or clock with a sweep second hand.
Comparing the test strip to the colour chart too soon
before, or too late after, the required test time will
result in incorrect readings and improper treatment,
and could result in liner pitting and engine damage.
8. All readings should be recorded on the truck
maintenance record for future reference.
Precharge Chart
Cooling System Amount of DCA4 Liquid Required
Capacity - Litres
Units
78 - 115
116 - 191
192 - 285
286 - 380
381 - 569
SM 1983 4-00
Litres
40 3.8
60 5.7
90 8.5
120 11.4
180 17.0
Cooling System - Cooling System
Treatment Instructions
If the concentration is:
Below 0.3 units per litre - Add both the normal
amount of DCA4 liquid as specified in the respective
service chart' and the amount specified in the
respective 'Precharge Chart'. Replace the DCA4
coolant filter.
Between 0.3 and 0.8 units per litre - Add the normal
amount of DCA4 liquid as specified in the respective
'Service Chart'. Replace the DCA4 coolant filter.
Above 0.8 units per litre - Do not replace the DCA4
filter or add liquid DCA4 until the concentration drops
below 0.8 units per litre. The concentration must be
tested at every subsequent 250 hour service interval
until concentration decreases below 0.8 units per
litre.
SPECIAL TOOL AND TEST KIT
Refer to Section 300-0070, SERVICE TOOLS, for
part numbers of the refractometer and coolant test kit
referenced in this section. These items are available
from your dealer.
Service Chart
Cooling System Amount of DCA4 Liquid Required
Capacity - Litres
Units
78 - 115
116 - 190
191 - 285
286 - 379
380 - 569
Section 210-0000
Litres
10 1.0
15 1.4
20 1.9
25 2.4
40 3.8
Courtesy of Machine.Market
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