Infiniti M35/M45 Y50. Manual — part 1042
PREPARATION
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PREPARATION
PFP:00002
Special Service Tools
NKS005BM
Commercial Service Tools
NKS005BN
Tool number
(Kent-Moore No.)
Tool name
Description
—
(J-48087)
Battery Service Center
Tests battery.
For operating instructions, refer to Technical
Service Bulletin and Battery Service Center
User Guide.
—
(J-44373 Model MCR620)
Starting/Charging System Tester
Tests starting and charging systems.
For operating instructions, refer to Technical
Service Bulletin.
WKIA5280E
SEL403X
Tool name
Description
Power tool
Loosening bolts, nuts and screws
PIIB1407E
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BATTERY
BATTERY
PFP:AYBGL
How to Handle Battery
NKS005BO
CAUTION:
●
If it becomes necessary to start the engine with a booster battery and jumper cables, use a 12-volt
booster battery.
●
After connecting battery cables, ensure that they are tightly clamped to battery terminals for good
contact.
●
Never add distilled water through the hole used to check specific gravity.
METHODS OF PREVENTING OVER-DISCHARGE
The following precautions must be taken to prevent over-discharging
a battery.
●
The battery surface (particularly its top) should always be kept
clean and dry.
●
The terminal connections should be clean and tight.
●
At every routine maintenance, check the electrolyte level.
This also applies to batteries designated as “low maintenance”
and “maintenance-free”.
●
When the vehicle is not going to be used over a long period of
time, disconnect the battery cable from the negative terminal.
●
Check the charge condition of the battery.
Periodically check the specific gravity of the electrolyte. Keep a
close check on charge condition to prevent over-discharge.
MEL040F
ELA0349D
MEL042F
BATTERY
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CHECKING ELECTROLYTE LEVEL
WARNING:
Never allow battery fluid to come in contact with skin, eyes, fabrics, or painted surfaces. After touch-
ing a battery, never touch or rub your eyes until you have thoroughly washed your hands. If acid con-
tacts eyes, skin or clothing, immediately flush with water for 15 minutes and seek medical attention.
●
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.
Use the chart below to correct your hydrometer reading accord-
ing to electrolyte temperature.
Hydrometer Temperature Correction
MEL043F
PKIA2353E
MEL042FA
Battery electrolyte temperature
°
C (
°
F)
Add to specific gravity reading
71 (160)
0.032
66 (150)
0.028
60 (140)
0.024
54 (130)
0.020
49 (120)
0.016
43 (110)
0.012
38 (100)
0.008
32 (90)
0.004
27 (80)
0
21 (70)
−
0.004
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BATTERY
CHARGING THE BATTERY
CAUTION:
●
Never “quick charge” a fully discharged battery.
●
Keep the battery away from open flame while it is being charged.
●
When connecting the charger, connect the leads first, then turn on the charger. Never turn on the
charger first, as this may cause a spark.
●
If battery electrolyte temperature rises above 55
°
C (131
°
F), stop charging. Always charge battery
at a temperature below 55
°
C (131
°
F).
Charging Rates
Never charge at more than 50 ampere rate.
NOTE:
The ammeter reading on your battery charger will automatically decrease as the battery charges. This indi-
cates that the voltage of the battery is increasing normally as the state of charge improves. The charging amps
indicated above refer to initial charge rate.
●
If, after charging, the specific gravity of any two cells varies more than 0.050, the battery should be
replaced.
16 (60)
−
0.008
10 (50)
−
0.012
4 (40)
−
0.016
−
1 (30)
−
0.020
−
7 (20)
−
0.024
−
12 (10)
−
0.028
−
18 (0)
−
0.032
Corrected specific gravity
Approximate charge condition
1.260 - 1.280
Fully charged
1.230 - 1.250
3/4 charged
1.200 - 1.220
1/2 charged
1.170 - 1.190
1/4 charged
1.140 - 1.160
Almost discharged
1.110 - 1.130
Completely discharged
Battery electrolyte temperature
°
C (
°
F)
Add to specific gravity reading
Amps
Time
50
1 hour
25
2 hours
10
5 hours
5
10 hours
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