Cooling System Testing; Coolant (Hydrometer Test); Standard Coolant Concentration; Coolant Gravity Chart - Honda GL1800 Service Manual

SYSTEM TESTING

COOLANT (HYDROMETER TEST)

Remove the right fairing pocket (page 2-12).
Remove the radiator cap.
Test the
hydrometer.

STANDARD COOLANT CONCENTRATION: 50%

Look for contamination and replace the coolant if
necessary.

COOLANT GRAVITY CHART

coolant specific gravity
0 5
(32) (41)
5 1.009 1.009 1.008 1.008 1.007 1.006 1.005 1.003
10 1.018 1.017
15 1.028 1.027
20 1.036 1.035
25 1.045 1.044
30 1.053 1.052
35 1.063 1.062
40 1.072 1.070
45 1.080 1.078
50 1.086 1.084
55 1.095 1.093
60 1.100 1.098
YDROMETER
using a
Coolant temperature ° C (° F)
10 15 20 25
(50) (59) (68) (77)
1.017 1.016 1.015 1.014
1.026 1.025 1.024 1.022
1.034 1.033 1.031 1.029
1.043 1.042 1.040 1.038
1.051 1.047 1.046 1.045
1.060 1.058 1.056 1.054
1.068 1.066 1.064 1.062
1.076 1.074 1.072 1.069
1.082 1.080 1.077 1.074
1.091 1.088 1.085 1.082
1.095 1.092 1.089 1.086
COOLING SYSTEM
ADIATO CAP
30 35 40 45
(86) (95) (104) (113)
1.001 0.999 0.997
1.013 1.011 1.009 1.007 1.005
1.020 1.018 1.016 1.014
1.027 1.025 1.023 1.021
1.036 1.034 1.031 1.028
1.043 1.041 1.038 1.035
1.052 1.049 1.046 1.043
1.059 1.056 1.053 1.050
1.066 1.063 1.060 1.057
1.071 1.068 1.065 1.062
1.079 1.076 1.073 1.070
1.083 1.080 1.077 1.074
50
(122)
1.012
1.019
1.025
1.032
1.040
1.047
1.054
1.059
1.067
1.071
6-5