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DV11
Operation and Maintenance
34
Technical Information
Printed in Mar. 2005 PS-MMA0608-E1A
z
The density of anti-freezing solution and additive for rust prevention is able to be
confirmed by the cooling water test kit.
(
Fleetguard CC2602M
or
DOOSAN 60.99901-0038
)
z
How to use the cooling water test kit
(1) When the cooling water temp. of engine is in the range of 10 55
~
°
C, loosen
the plug for cooling water discharge and fill the plastic cup about a half.
NOTE:
In taking the cooling water sample, if the water in auxiliary tank were taken, it
is hard to measure the accurate density. Take the cooling water sample
necessarily loosening the cooling water discharge plug.
(2) At the state of a test paper soaked in the sampled water, after 3 - 5 seconds
past, take the paper out through water agitation, and shake off the water.
(3) Wait for about 45 sec. till the color change of test paper.
NOTE:
However, it should not elapse longer than 75 sec, and if it did, the hue would
change.
(4) Make the numerical value by comparing the test paper which hue has
changed with the color list of label on storage bottle.
(5) By comparing the hue changed into yellowish green or so with the green color
indication of test paper storage bottle, confirm the density. (Then, the density
indication must be in the hue range of 33% to 50%).
(6) The brown at the middle of test paper and the lower pink color indication
represent the additive state for rust prevention, and the proper range is that
the meeting numerical value of brown (vertical) and pink color (horizontal)
locates in the range of 0.3 to 0.8 at the color list of label on the test paper
storage bottle.
(7) In case of less than 0.3, replenish the additive for rust prevention (DCA4), and
in case of more than 0.8, pour out the cooling water about 50% and then
readjust the density after refilling with clean fresh water.
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