S&S Cycle Three Piece Flywheel Assemblies for S&S V-Series Engines for 1984-99 Harley-Davidson Big Twins - Manual (Page 4)

27. Install the case bolts/alignment studs and tighten the alignment
studs and 5/16" fasteners to 18 ft-lbs. The center case bolt in S&S
crankcases in a ¼" bolt and should be tightened to 120 in-lbs. Use
the sequence in the diagram below.
NOTE: Early production S&S crankcases are machined with an interlocking
lip and use alignment studs and bolts to fasten crankcase halves together.
Later style crankcases have flat mating surfaces and use bolts only to
fasten crankcase halves.
28. When the crankcase has been assembled, confirm that the flywheel
endplay specification is still within .001"–.005".
29. Load the bearing by either tightening a sprocket shaft nut and
spacer on the sprocket shaft threads or by a using a bearing
installer tool.
30. Mount a dial indicator on the left side of the lower end assembly.
Put the indicator on the sprocket shaft nut or installation tool so
it measures in and out horizontal shaft movement. See Picture 5.
31. Rotate the shaft and push in on it, noting the indicator reading.
Rotate the shaft and pull on it, noting the dial indicator reading.
The difference between the two readings is the endplay—it should
be between .001" and .005".
32. If endplay is not within this range, the main bearing spacer must
be changed. Remember a thinner spacer will produce less endplay.
33. Install the sprocket shaft spacer and seal in the left side of the
case. Note: S&S® installs the spring side of the seal facing out in a
wet primary. For dry primary applications, install the seal with the
spring facing in.
CLEARANCE SPECIFICATIONS
S&S® THREE PIECE FLYWHEEL ASSEMBLY
COMPONENT FACTORY
SPECIFICATION SERVICE WEAR LIMIT
CONNECTING
ROD SIDEPLAY .005"–.035" .040"
WRISTPIN
CLEARANCE .0007"–.0013" .002"
PINION SHAFT
RUNOUT* .003" MAX -
*w/o compensator or charging system installed
34. Once you are sure the crankcase sealant has dried, pour four ounces
of engine oil on the lower portion of the connecting rods. Carefully
rotate the flywheel assembly around to spread the oil out over the
rod bearings. As you do this, the wheels should rotate freely with
no binding or drag.
35. With the flywheel assembly installed in the crankcases, the rest of
the engine may be assembled. Follow steps outlined in S&S service
manual. In addition, follow any special steps required for any
aftermarket or high performance components used in the engine.
SPECIAL NOTE – Camside case of S&S 4 1/8" bore crankcase sets with serial
numbers lower than NE00203X must be machined in the hatched area
as illustrated in Figure 2 to a depth of 1.928" ± .002" from the crankcase
mating surface to provide adequate clearance for current production
flywheel assemblies. Please pay special attention to the following:
1. Secure the camside case on a rotary table on a mill so that the
pinion bearing race is concentric with the center of the table
2. Using a long end mill, move to the front wall of the flywheel cavity
and set the depth to 1.929" from the crankcase mating surface. Add
the height of the crankcase interlocking lip if present, and measure
from the top of the lip. As shown in Picture 6.
3. Do not increase the diameter of the flywheel cavity. Increase the
depth only.
4. Rotate the table and machine the lip at the bottom of the case, but
stop before the end mill touches the oil scraper. Do not machine
the oil scraper.
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Figure 1
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2
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6
3 4
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Picture 6
Picture 5