BATTERIES & CHARGING
Page H-7
Repair and Service Manual
Read all of Section B and this section before attempting any procedure. Pay particular attention to all Notices, Cautions, Dangers and Warnings.
Since the hydrometer test is in response to a vehicle ex-
hibiting a performance problem, the vehicle should be
recharged and the test repeated. If the results indicate a
weak cell, the battery or batteries should be removed
and replaced with a good battery of the same brand,
type and approximate age.
Fig. 8 Hydrometer Temperature Correction
160 71
+.032
+.030
150 66
+.028
+.026
140 60
+.024
+.022
130 54
+.020
+.018
120 49
+.016
+.014
110 43
+.012
+.010
100 38
+.008
+.006
90 32
+.004
+.002
80 27
0
–.002
70 21
–.004
–.006
60 16
–.008
–.010
50 10 –.012
–.014
40 4 –.016
–.018
30 –1
–.020
–.022
2 –7
–.024
–.026
10 –12 –.028
EXAMPLE #1:
Electrolyte Temperature
Above 80˚ F (27˚ C)
Electrolyte temperature
90˚ F (32˚ C)
Hydrometer reading 1.250
1.250 + .004 = 1.254
corrected specific gravity
Electrolyte Temperature
Below 80˚ F (27˚ C)
Electrolyte temperature
70˚ F (21˚ C)
Hydrometer reading 1.250
1.250 - .004 = 1.246
corrected specific gravity
EXAMPLE #2:
˚ F
˚ C
Electrolyte
Temperature
