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Before installing the pulley onto the alternator you must slide the supplied black 
spacer onto the shaft to correctly align the belt. 
 
 

 

 
Using the supplied M10x90mm bolt and M10 flat washer install the LS1 alternator 
onto the lower mount. Once installed another M10 flat washer and M10 nyloc nut is 
used to secure the bolt. Hand tighten only.  
 
Rotate the alternator so the top alternator mounting point lines up with the adjust 
bracket. Using the supplied M10x80mm bolt, washers and nyloc nut secure in place, 
again hand tight only.  
 

 

 
 

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