S&S Cycle Oil Supply Line Installation Kit PN 31-0424 (For 1999–2005 Harley-Davidson Dyna Models) PN 31-0425 (For 2000–2006 FLT Models) - Manual (Page 5)

CAUTION
Oil Line installation is crucial to engine life. If you are not sure
that you can properly perform this operation, please contact the
S&S® Tech Department for a referral to a shop in your area.
NOTE: Installation instructions are based on an engine and transmission
already in the chassis.
1- Remove the stock oil supply and return fittings from the
transmission.
2- Install two supplied 3⁄8 NPT pipe plugs (S&S PN 50-8330) in
the oil fitting location.
NOTE: Apply thread sealant to all tapered pipe threads.
3- Drain the oil from the oil pan—see the proper factory
service manual for instructions—and then remove the oil
pan from the motorcycle.
4- Place the supplied template (106-1188) over the oil pan
baffle and use a scribe to mark the location of the 1⁄2" hole
as shown in Picture 8, above left. Use a drill press to
machine the 1⁄2" hole as marked in Picture 9, above right.
Use a small file or deburring tool to make sure no chips or
pieces are left on the 1⁄2" hole and then clean the oil pan
and baffle with solvent before reinstalling the pan with a
new gasket on the motorcycle.
5- Remove the transmission top cover. Remove the neutral
indicator switch, vent line and fitting from the transmission
top cover.
6- Install the neutral indictor switch, vent line and fitting on
the new S&S transmission top cover (S&S PN 106-3886).
7- Slide the oil feed line (S&S PN 31-0449) through the hole in
the top cover closest to the oil filler/dipstick boss. Place a
new top cover gasket (S&S PN 56-1261)on the transmission
case and position the new S&S top cover on it. Rotate the
oil feed line so it will pass through the 1⁄2" hole in the baffle.
Be sure the bend in the oil feed line orientation is to the
rear of the motorcycle. See Picture 10, below left.
8- Install the transmission top cover screws and washers
according to Detail A. Use blue threadlock on the screws,
but leave them loose at this time. See Detail A in exploded
view of replacement parts for Harley-Davidson® Dyna® on
page 7.
9- Remove the oil line retention plate, plugs and seals from
the top of the engine crankcase. Remove seals from the
plugs. Discard the plugs.
10- To install the oil lines (S&S PN 31-0447 and 31-0448),
orient the ends and openings so they are parallel. Insert
the lines through the oil line retention plates, then the
included washers (S&S PN 50-0439) and, last the seals (S&S
PN50-8271) on each line end. The ends of the lines should
protrude through the seals about 1⁄8 inch. See Picture 11,
below right.
FOR 1999-’05 HARLEY-DAVIDSON® DYNA® MODELS (PN31-0424)
Picture 10 Picture 11
Picture 8 Picture 9