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Engine • Starting/Charging Systems(H4SO) • Battery • Inspection 2005 Subaru Forester

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STARTING/CHARGING SYSTEMS(H4SO) > Battery

INSPECTION

WARNING:

• Electrolyte has toxicity; be careful handling the fluid.

• Avoid contact with skin, eyes or clothing. Especially at contact with eyes, blush with water for 15 minutes and get prompt medical attention.

• Batteries produce explosive gasses. Keep sparks, flame, cigarettes away.

• Ventilate when charging or using in enclosed space.

• For safety, in case an explosion does occur, wear eye protection or shield your eyes when working near any battery. Never lean over a battery.

• Do not let the battery fluid contact eyes, skin, fabrics, or paint-work because battery fluid is corrosive acid.

• To lessen the risk of sparks, remove rings, metal watch-bands, and other metal jewelry. Never allow metal tools to contact the positive battery terminal and anything connected to it while you are at the same time in contact with any other metallic portion of the vehicle because a short circuit will be caused.

1. EXTERNAL PARTS:

Check for the existence of dirt or cracks on battery case, top cover, vent plugs, and terminal posts. 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 pouring distilled water into the battery cell. Do not fill beyond MAX LEVEL.

3. SPECIFIC GRAVITY OF ELECTROLYTE:

1. Measure the 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 electrolyte temperature of 20°C

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)]

2005 Subaru Forester Engine • Starting/Charging Systems(H4SO) • Battery • Inspection

(1)

Specific gravity

(2)

Complete charge

(3)

Charging condition

(4)

Specific gravity and state of charge

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

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




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