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Engine • Starting/Charging Systems(H4SO) • Battery • Inspection 2008 Subaru Forester

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STARTING/CHARGING SYSTEMS(H4SO) > Battery

INSPECTION

WARNING:

• Battery fluid is corrosive acid and has toxicity; be careful of handling the fluid.

• Do not let the battery fluid contact with skin, eyes or clothing. Especially at contact with eyes, flush with water for 15 minutes and get prompt medical attention.

• Do not let electrolyte contact with painted surfaces.

• Batteries produce explosive gases; be careful of handling.

• Keep open flames away from batteries.

• When working around batteries, be sure to protect eyes with safety glasses, etc., in case an explosion occurs. Never lean over a battery.

• Ventilate sufficiently when using or charging batteries in enclosed space.

• Before starting work, remove rings, watches and other metallic objects.

• When in contact with a metallic portion of the vehicle, never allow metallic tools held in the other hand to come into contact with the battery positive terminal or any hardware attached to the terminal.

1. EXTERNAL PARTS

Check the battery case, top cover, vent plugs, and terminal posts for dirt or cracks. If necessary, clean with water and wipe with a dry cloth.

Apply a thin coat of grease on the terminal posts to prevent corrosion.

2. ELECTROLYTE LEVEL:

Check the electrolyte level in each cell. If the level is below MIN level, bring the level to MAX level by filling distilled water into the battery cell. Do not fill beyond MAX LEVEL.

3. SPECIFIC GRAVITY OF ELECTROLYTE:

1. Measure specific gravity of electrolyte using a hydrometer and a thermometer.

Specific gravity varies with temperature of electrolyte so that it must be corrected at 20°C (68°F) using the following equation:

S20 = St + 0.0007 ? (t ? 20)

S20: Specific gravity corrected at electrolytic solution temperature of 20°C (68°F)

St: Measured specific gravity

t: Measured temperature (°C)

Determine whether or not battery must be charged, according to corrected specific gravity.

Standard specific gravity: 1.220 — 1.290 [at 20°C (68°F)]

2. Measuring the specific gravity of the electrolytic solution will disclose the state of charge of the battery. The relation between specific gravity and state of charge is as shown in the figure.

2008 Subaru Forester Engine • Starting/Charging Systems(H4SO) • Battery • Inspection

    2017-02-20 18:50:30    2017-05-11 10:18:54




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