6 COOLANT
Mitsubishi Diesel Engine S16R & S16R2 OPERATION & MAINTENANCE MANUAL
116
Pub. No. K29001-00320 Revision: 1
Measurement
• Before measuring the LLC
concentration, be sure to adjust
tools
"Tool - Adjust" (→ Page 114).
1 Place a sample of 1 or 2 drops of
coolant/water mixture on the prism.
Fig. 6-9 LLC concentration measurement 1
2 Close the daylight plate slowly.
Fig. 6-10 LLC concentration measurement 2
3 Spread a drop of water over the
surface of the prism taking care that
air bubbles will not enter it.
Fig. 6-11 LLC concentration measurement 3
4 Read the scale through the eye
piece.
• Rotate the eyepiece to either side to focus.
Fig. 6-12 LLC concentration measurement 4
5 Read the scale at the position where
the blue boundary line comes
across.
Fig. 6-13 LLC concentration measurement 5
• How to read the Scale
The scale of the coolant tester is for the
ethylene glycol type. When measuring a
propylene glycol type, convert the reading to
judge by using the table below.
Table 6-3 Scale Conversion Table
Scale
markings
0 5 10 15 20 25 30 35 40 45 50
Corre-
sponding
value
0 5 9 1418222631353944
60
1.35
1.30
1.25
1.20
1.15
1.10
1.05
1.00
50
40
30
20
10
00
-50
-40
-30
-20
-10
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