User Manual

14
NOTE: 
Early panhead cases are not as strong and are machined with oil supply passageways to heads closer to surface of boss. Removal of
excessive material may weaken thinner cases and/or break into oil passage.
C. Place masking tape over both ends of camshaft and mainshaft bearings to keep out chips.
D. Grind shaded areas to adjacent machined depth.
E. Mock up right side ywheel in crankcase half with mainshaft and crankpin installed with bearings, thrust washers, etc. in place.
F. Rotate ywheel and note any contact.
G. If ywheel does not rotate freely, check contact areas and grind more clearance.
H. Repeat procedure until sucient clearance is obtained.
NOTE:
Insucient clearance between crankpin nut and crankcase will cause contact and may damage components.
Connecting Rod Clearance
Front and rear of ywheel cavity inside crankcases andcylinder spigots must be clearanced for connecting rods. Picture 7, below shows rear side
of ywheel cavity.
NOTE:
Procedure to check these points is performed as follows:
A. Mock up right side ywheel in crankcase half with mainshaft and crankpin installed with bearings, thrust washers, etc. in place.
B. Assemble pistons without rings on their proper connecting rods, and place connecting rods on crankpin. Installation of wristpin clips is not
necessary.
NOTE: 
instructions included with pistons for proper piston direction placement.
Distance = 1/2 Stroke + 1/2 Dia. Crankpin
Nut Across Points - 1/2 Outside
Dia. Main Race + 1/16" Clearance
Figure 6
CAUTION
CAUTION
Picture 7