MEL043F
+Remove the cell plug using a suitable tool.
+Add distilled water up to the MAX level.
SEL709E
SulphationNLSC0003S0201A battery will be completely discharged if it is left unattended
for a long time and the specific gravity will become less than
1.100. This may result in sulphation on the cell plates.
To determine if a battery has been“sulphated”, note its volt-
age and current when charging it. As shown in the figure, less
current and higher voltage are observed in the initial stage of
charging sulphated batteries.
A sulphated battery may sometimes be brought back into ser-
vice by means of a long, slow charge, 12 hours or more, fol-
lowed by a battery capacity test.
MEL042FA
SPECIFIC GRAVITY CHECKNLSC0003S031. Read hydrometer and thermometer indications at eye level.
2. Convert into specific gravity at 20°C (68°F).
Example:
+When electrolyte temperature is 35°C (95°F) and specific grav-
ity of electrolyte is 1.230, converted specific gravity at 20°C
(68°F) is 1.240.
+When electrolyte temperature is 0°C (32°F) and specific grav-
ity of electrolyte is 1.210, converted specific gravity at 20°C
(68°F) is 1.196.
BATTERY
How to Handle Battery (Cont’d)
SC-4
BatteryNLSC0014
Applied model QG engine YD22 engine
TypeYUASA type code YUASA type code
025 027 065 075 079 067 096
Capacity V-AH 12 - 52 12-55 12-50 12-42 12-60 12-64
StarterNLSC0015
Type0 001 116 006 D7E31 S114-800B S1114-871 M8T75371
BOSCH make VALEO make HITACHI make MITSUBISHI make
Non-reduction Non-reduction Reduction Reduction Reduction
Applied model QG engine SR engine YD22 engine
System voltage V12
No-loadTerminal voltage V 11.5 11.0 11.0 11.0 11.0
Current A Less than 48 45 Less than 90 Less than 90 Less than 145
Revolution rpm More than 5,800 12,000 More than 2,700 More than 2,300 More than 3,400
Minimum diameter of commutator mm
(in)33.5 (1.319) 28.2 (1,110) 28.0 (1.102) 31.4 (1.236)
Minimum length of brush mm (in) 3.5 (0.138) 6.15 (0.242) 10.5 (0.413) 11.0 (0.433)
Brush spring tension N (kg, lb)5.2 (0.53, 1.17) at
7.5 mm (0.295 in)
brush length16.2 - 19.8
(1.65 - 2.02,
3.46 - 4.45)12.7 - 17.7
(1.3 - 1.8,
2.9 - 4.0)26.5 - 36.3
(2.7 - 3.7,
6.0 - 8.2)
Clearance between bearing metal and
armature shaft mm (in)—0.05 (0.002) Less than 0.2 (0.008)—
Clearance“!”between pinion front edge
and pinion stopper mm (in)0.0 - 3.9
(0 - 0.154)Max. 1 (0.039) 0.3 - 2.5 (0.012 - 0.098)—
Movement“!”in height of pinion assem-
bly mm (in)—Max. 12.2 (0.480)—0.5 - 2.0
(0.020 - 0.079)
AlternatorNLSC0016
TypeLR180-762 LR190-747 LR1100-724 A2TB3891
HITACHI make MITSUBISHI make
Applied model QG engine SR engine YD engine SR engine
Nominal rating V-A 12-80 12-90 12-100 12-90
Ground polarityNegative
Minimum revolutions under no-load (When
13.5V is applied) rpmLess than 1,000 Less than 1,300
Hot output current (When 13.5V is applied)
A/rpmMore than 23/1,300
More than 65/2,500
More than 87/5,000More than 34/1,300
More than 83/2,500
More than 91/5,000More than 22/1,300
More than 64/2,500
More than 85/5,000
Regulated output voltage V 14.1 - 14.7
Minimum length of brush mm (in) 6.0 (0.236) 5.0 (0.197)
Brush spring pressure N (g, oz) 1.0 - 3.43 (102 - 350, 3.60 - 12.34)4.8 - 5.0
(490 - 610, 17.28 -
21.51)
Slip ring minimum diameter mm (in) 6.0 (1.024) 22.1 (0.870)
Rotor coil resistance at 20°C (68°F)Ω2.67 2.31 1.8 - 2.1
SERVICE DATA AND SPECIFICATIONS (SDS)
Battery
SC-34
