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Caterpillar C15 Industrial Engine — Battery Electrolyte Level - Check

Maintenance

For the Caterpillar C15 Industrial Engine, from the Caterpillar owner's manual.

Applies to: Caterpillar C1.5 engine

Before you start

  • All lead-acid batteries contain sulfuric acid which can burn skin and clothing. Wear a face shield and protective clothing.

Procedure

  1. Remove the filler caps. Maintain the electrolyte level to the 'FULL' mark; add distilled or low-mineral water if needed.
  2. Check the condition of the electrolyte with the 245-5829 Coolant Battery Tester Refractometer.
  3. Keep batteries clean. Clean the battery case with baking soda/water or ammonia/water; rinse thoroughly.
  4. Clean terminals and cable clamps with fine sandpaper until bright or shiny; do not remove excess material.
  5. Coat clamps and terminals with 5N-5561 Silicone Lubricant, petroleum jelly, or MPGM.

Tools required

  • 245-5829 Coolant Battery Tester Refractometer Amazon

Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.

Source: Caterpillar owner's manual. Steps and values are as documented; always cross-check against the official manual and any later revisions for your exact serial number before servicing.

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