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INTRODUCTION

  





NOTE: S&S crankcases are sold in matched sets only. Individual case halves are not available.
KIT CONTENTS:

Left and right main bearing races (right race is nal honed and size is

marked on tag wired to cases).
31-4008 bushing, oil pump drive shaft (bushing is reamed).

31-4009 bearing assembly., cam needle. 
8 studs, cylinder (studs installed are appropriate part for type of cases 
ordered).
31-2006 plug, magnetic drain.

31-2037 shaft, circuit breaker drive gear (1936 to ’69 cases). 
31-2039 shaft, idler gear (1936 to ’69 cases). 
One set of S&S big twin crankcase bolts (less two bolts, washers and 
nuts used to hold cases together for shipping).
One 31-4013 bearing assembly, left main (less races installed by S&S).

Assorted loose hardware and several hardware packages in the 
following congurations:
1936 to 1947 big twins
  
  
  
  
  
  
  
1948 to 1964 big twins
  
  
  
  
1965 to 1969 big twins
  
  
  
  
1970 to 1984 big twins
  
  
  
  
1984 to present big twins
  
  
  
Installation instructions. 
Certicate of origin. 
C.A.R.B. approved sticker (crankcases 31-0000, 31-0003, 31-0005, and 
31-0012, 31-0052, 31-0055) See Step #8.

 
  
  
  
  
  
  
 
  
  
  
  
  
  
  
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  
  
  
  
  
 
  
  
  
  
  
 
  
  
  
  
  
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  
  
POLISHING, PAINTING, PLATING OR POWDERCOATING S&S CASES
         


          
         




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