Isuzu Cars and Trucks 1981-1991



All Isuzu vehicles have a "maintenance free" battery as standard equipment, eliminating the need for fluid level checks and the possibility of specific gravity tests. Nevertheless, the battery does require some attention.

Once a year, the battery terminals and the cable clamps should be cleaned. Remove the side terminal bolts and the cables, negative cable first. Clean the cable clamps and the battery terminals with a wire brush until all corrosion, grease, etc. is removed and the metal is shiny. It is especially important to clean the inside of the clamp thoroughly, since a small deposit of foreign material or oxidation there will prevent a sound electrical connection and inhibit either starting or charging. Special tools are available for cleaning the side terminal clamps and terminals.

Before installing the cables, loosen the battery hold-down clamp, remove the battery, and check the battery tray. Clear it of any debris and check it for soundness. Rust should be wire-brushed away, and the metal given a coat of anti-rust paint. Replace the battery and tighten the hold-down clamp securely, but be careful not to overtighten, which will crack the battery case.

After the clamps and terminals are clean, reinstall the cables, negative cable last. Give the clamps and terminals a thin external coat of grease after installation, to retard corrosion.

Check the cables at the same time that the terminals are cleaned. If the cable insulation is cracked or broken, or if the ends are frayed, the cable should be replaced with a new cable of the same length and gauge.

Keep flames or sparks away from the battery; it gives off explosive hydrogen gas. Battery electrolyte contains sulfuric acid. If you should get any on your skin or in your eyes, flush the affected areas with plenty of clear water; if it lands in your eyes, get medical help immediately.

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Fig. Typical battery installation

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Fig. Use a puller to remove the battery cable