SC-4
BATTERY
Remove the cell plug using a suitable tool.
Add distilled water up to the MAX level.
Sulphation
A 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 voltage
and current when charging it. As shown in the figure, less cur-
rent 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.
SPECIFIC GRAVITY CHECK
1. 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 gravity
of electrolyte is 1.210, converted specific gravity at 20 °C (68 °F)
is 1.196.
MEL043F
PKIA2353E
MEL042FA
SEL007Z
SC-34
SERVICE DATA AND SPECIFICATIONS (SDS)
SERVICE DATA AND SPECIFICATIONS (SDS)PFP:00030
BatteryEKS0031Q
StarterEKS0031R
AlternatorEKS0031S
Applied modelQR20, QR25 engine
YD22 engine
Except
for Northern EuropeFor Northern
Europe
Type 55D23L 80D23L 110D26L
Capacity [V - AH] 12-48 12-52 12-64
Applied modelQR20, QR25 engine
YD22 engine
A/T M/T
Ty p eS114-844 M0T87081 M8T71471
HITACHI make MITSUBISHI make
Reduction
System voltage [V] 12
No-loadTerminal voltage [V] 11.0
Current [A] Less than 90 Less than 90 Less than 145
Revolution [rpm] More than 2,700 More than 2,500 More than 3,300
Minimum diameter of commutator [mm (in)] 28.0 (1.102) 28.8 (1.134) 31.4 (1.236)
Minimum length of brush [mm (in)] 10.5 (0.413) 7.0 (0.276) 11.0 (0.433)
Brush spring tension [N (kg, lb)] 16.2 (1.65, 3.64)15.0 - 20.4
(1.5 - 2.1, 3.4 - 4.6)26.7 - 36.1
(2.7 - 3.7, 6.0 - 8.2)
Clearance between bearing metal and armature shaft [mm (in)] Less than 0.2 (0.008) —
Clearance “L” between pinion front edge and pinion
stopper[mm (in)]0.3 - 2.5
(0.012 - 0.098)0.5 - 2.0
(0.020 - 0.079)—
Movement “L” in height of pinion assembly [mm (in)] —0.5 - 2.0
(0.020 - 0.079)
Applied model QR20, QR25 engine YD22 engine
Ty p eLR1110-713 A3TB0771
HITACHI make MITSUBISHI make
Nominal rating [V - A] 12-110 12-90
Ground polarityNegative
Minimum revolutions under no-load
(When 13.5 V is applied)[rpm] Less than 1,100 Less than 1,300
Hot output current (When 13.5V is applied) [A/rpm](More than 35/1,300)
More than 70/1,800
More than 91/2,500
More than 110/5,000More than 29/1,300
More than 76/2,500
More than 88/5,000
Regulated output voltage [V] 14.1 - 14.7
Minimum length of brush [mm (in)] More than 6.0 (0.236) More than 5.0 (0.197)
Brush spring pressure [N (g, oz)]1.0 - 3.43
(102 - 350, 3.60 - 12.34)4.8 - 6.0
(490 - 610, 17.28 - 21.51)
Slip ring minimum diameter [mm (in)] More than 26.0 (1.024) More than 22.1 (0.870)
Rotor coil resistance at 20 °C (68 °F) [Ω] 2.31 2.1 - 2.5
