Manual

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
 
 

NOTE: Although all S&S® crankcases are machined for crankcase breather vent, some late chassis lack sucient room between crankcase and
transmission/oil tank for correct breather ttings. S&S discourages use of crankcase vent without correct tting due to possibility of oil reaching rear
brakes or tire or abrasive contaminants entering crankcase. In these instances, crankcase pressure must be vented through cylinder heads as on 1993-up
big twins. With cylinder head venting, hole E must be plugged for reasons mentioned above. Additionally, leaving hole E open with 1993-up gearcover
will cause large oil losses.
 
 See Pictures 4, 5 & 6.
 
 
NOTE: Installing stock 1973-1980 shovelhead oil pump on S&S® alternator style crankcase will expose oil passage immediately above crankcase hole for
top outside oil pump mounting bolt, resulting in large oil leak. See Picture 11. Using S&S oil pump is recommended. Otherwise, passage indicated (See
Picture 12) must be carefully tapped for 8-32 set screw, and set screw installed with green Loctite®. Perform procedure prior to assembling crankcases and
carefully remove all metal chips generated during procedure.
Picture 11
Picture 12
Note





 
 
 See Picture 13.
 
 
Picture 13
Hole A