GM Full-Size Trucks 1970-1979 Repair Guide

Battery

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REMOVAL & INSTALLATIONSee Figure 1



Refer to Routine Maintenance for battery maintenance. Battery installation and removal varies with the truck model and series, making it impossible to detail all installations. However, observe the following precautions when dealing with batteries:

  1. Always disconnect the grounded (negative) terminal first and install it last to avoid short circuits and sparks. Special pullers are available to remove clamp-type battery terminals.
  2.  
  3. Be sure that the battery tray is clean and free of debris, so that the battery will seat squarely.
  4.  
  5. When installing batteries, tighten the holddown strap or clamp snugly, but not with such force that it cracks the cover or case.
  6.  
  7. Be sure that the cables are in good condition and that the terminal clamps are clean and tight. Wire brushes are available to clean these items. Make sure that the ground cable is clean and tight at the engine block or frame. When installing cables, never hammer them in place. The terminals should be coated lightly with grease after installation to reduce corrosion.
  8.  
  9. Always check the battery polarity before installing cables. Reversed connections will destroy an alternator almost instantaneously.
  10.  



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Fig. Fig. 1: Regulator voltage setting circuit

 
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