S&S Cycle Adjustable Pushrods - Manual (Page 4)

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4. Thoroughly clean all parts including tappet body. Remove any oil
which might prevent hydraulic unit from fully collapsing during
adjustment.
5. Insert one spacer from S&S HL2T kit in tappet body.
6. Reassemble tappet in reverse order making sure original parts are
returned to their original positions. See Picture 3 below.
7. Replace wire retaining clip in tappet body.
8. Put tappet back in original tappet block.
9. Repeat Steps 2 through 8 for three remaining tappets.
10. Reassemble engine with modified tappets.
11. Adjust pushrods.
NOTE: In all cases engine must be cold and lifter must be at lowest point
of travel for pushrod adjustment.
a. Remove sparkplugs.
b. Remove spark plugs and rotate engine until front piston is at the
top of its stroke, with both front lifters at their lowest position
(TDCC – top dead center, compression).
NOTE: To ensure that the cylinder is at the correct position to adjust
pushrods, rotate the engine forward and watch the intake pushrod. The
intake pushrods are the two closest to the center of the engine. Watch
the intake pushrod rise and fall as the engine is rotated. When the intake
pushrod is at its lowest position, the cylinder is on its compression stroke.
Check to see if the piston is at TDC. If it isn't, rotate the engine a few more
degrees to bring the piston to the top of the cylinder.
c. Extend front pushrod until it contacts the hydraulic piston
assembly in the lifter body, then extend pushrod an additional
four complete turns, until piston assembly is in contact with HL2T
spacer and the valve is lifted off of its seat. If tappets contain oil,
as when pushrods are readjusted after engine has been run, or if
all oil was not removed during installation, allow at least 20–30
minutes for piston assembly to bleed down. If pushrod can be
turned between the fingers, tappet piston is not in contact with
HL2T spacer. Lengthen pushrod one additional turn and test again
after 20 minutes.
d. Loosen pushrod adjustment until pushrod can be rotated with the
fingers with slight drag. Continue loosening (shortening) pushrod
one full turn (6 flats).
NOTE: Shortening adjuster an additional six flats or full turn from zero
lash often results in quieter pushrod operation. This provides additional
travel for the hydraulic piston assembly, which can improve the ability of
the hydraulic unit to maintain zero lash under normal operating condi-
tions.
e. Tighten lock nut.
f. Repeat above procedures for rear cylinder, this time bringing rear
cylinder to TDCC (top dead center compression).
g. Replace spark plugs and install pushrod clips.
NOTE: Perform this operation on one cylinder at a time. Do not turn
engine until pushrod adjustment is complete, and pushrod can be spun
with fingers.
Picture 3