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ManualsBrandsLingenfelter ManualsCarHow to install GM LS coolant air bleed plug or cover in cylinder head
12
4.
Inspect for proper installation of the rivet (1).
5.
A properly installed plug should be installed flush with the surface of the head.
6.
Installation of the first design coolant air bleed cover (313) and bolt (312) may
be used instead of the rivet plug to complete the repair. Tighten the coolant
air bleed bolts to 12 
  
 N·m (106 
  
 lb 
  
 in).