SYSTEM TESTING
COOLANT
(HYDROMETER TEST)
Remove the side cowl
(page
2-8 ).
Remove
the radiator
cap.
Test the coolant gravity
using
a hydrometer (see
below
for
"Coolant gravity chart").
For maximum corrosion protection, a 50-
50%
solu-
tion
of ethylene glycol and distilled water
is
recom-
mended
(page
6-6).
Look
for contamination and replace the coolant if
necessary.
COOLANT GRAVITY CHART
COOLING SYSTEM
HYDROMETER
/
Coolant temperature
o
c
(°F)
0
5
10
15
20
25
30
35
40
45
50
(32)
(41)
(50)
(59)
(68)
(77)
(86)
(95)
(104)
(113)
(122)
5
1.009
1.009
1.008
1.008
1.007
1.006 1.005
1.003
1.001
0.999 0.997
10
1.018
1.017
1.017
1.016
1.015
1.014
1.013
1.011
1.009
1.007
1.005
15
1.028
1.027
1.026
1.025
1.024
1.022
1.020
1.018
1.016
1.014
1.012
"*-
20
1.036
1.035
1.034
1.033
1.031
1.029
1.027
1.025
1.023
1.021
1
1.o19
0
25
1.045
1.044
1.043
1.042
1.040
1.038
1.036
1.034
1.031
1.028
1.025
·~
30
1.053
1.052
'
1.051
1.047
1.046
1.045
1.043
1.041
1.038
1.035
1.032
....
35
1.063
1.062
1.060
1.058
1.056
1.054
1.052
1.049
1.046
1.043
1.040
c
co
0
40
1.072
1.070
1.068
1.066
1.064
1.062
1.059
1.056
1.053
1.050
1.047
0
45
1.080
1.078
1.076
1.074
1.072
1.069
1.066
1.063
1.060
1.057
1.054
u
50
1.086
1.084
1.082
1.080
1.077
1.074
1.071
1.068
1.065
1.062
1.059
55
1.095
1.093
1.091
1.088
1.085
1.082
1.079
1.076
1.073
1.070
1.067
60
1.100
1.098
1.095
1.092
1.089
1.086
1.083
1.080
1.077
1.074
1.071
6-5