Service manual

9
A. Install S&S Oil Pump Drill Jig, part #53-0013, on oil
pump gasket surface as in Picture 25.
B. Using .187" (
3
⁄16") drill bit CAREFULLY drill hole into
pump gasket surface until bit breaks out in breather
valve gear cavity. See Picture 25. If modification is
done while engine is still assembled, apply grease to
both sides of case to help catch chips.
NOTE - Drill hole slowly and carefully to avoid contacting
opposite wall of cavity when drill breaks through.
CAUTION - Contacting breather cavity wall with drill may
damage machined surface.
C. Remove drill jig and clear chips away.
D. Carefully debur hole in breather valve gear cavity.
7. Oil Pump Cover Assembly
Customer must install oil line fittings in pump cover
before installing oil pump. Section A applies to cast
covers. Section B applies to billet covers.
A. Cast Cover
NOTE - Oil line fitting placement on S&S pump may differ from
stock pump. Follow S&S instructions for installation of supply
and return fittings. Prior to installation coat threads of steel
fittings with anti-seize compound to prevent galling.
CAUTION - Improper installation of oil lines or fittings may
result in parts damage not covered under warranty.
1. Oil Supply - Oil supply line fitting can be installed
at either of two locations in most S&S oil pump
covers. Hole #2 marked “S” on cast pump cover
is normally used for 1991-earlier engines. See
Picture 4. Hole #4 in face of pump cover is
normally used for 1992-up engines. Holes #2 and
#4 may be used interchangeably for custom
applications but hole not used must be plugged
with #31-6007
1
⁄8 -27 pipe plug.
Steps below are typical for year groups shown.
a. 1936-1991
1. Install 90° elbow fitting #31-6008 in hole
#2 marked “S” in top of pump cover or
hole #4 in face of pump cover.
2. Install hose fitting #31-6009 in elbow
fitting installed in step a.
3. Install #31-6007
1
⁄8 -27 pipe plug in hole
#4 in face of pump cover.
b. 1992-up
1. Install 90° elbow fitting #31-6008 in hole
#4 in face of pump cover.
NOTE - Elbow fitting must be installed in hole #4 with opening
pointing down for use with OEM rigid oil lines.
2. Install hose fitting #31-6009 in elbow
fitting installed in step a.
3. Install #31-6007
1
⁄8 -27 pipe plug in hole #2
2. Oil Return - Oil return line can be connected to
pump at either of two locations. Hole #1 (marked
“R”) on top of cover is normally used for 1991-
earlier engines. Hole #5 in bottom of pump cover
is normally used for 1992-up engines. Return
hole not used must be plugged with #31-6007
1
⁄8 -27 pipe plug. Steps below are typical for year
groups shown.
a 1936-1991
1. Install 90° elbow fitting #31-6008 in hole
#1 in top of pump cover.
2. Install hose fitting #31-6009 in elbow
fitting installed in step a.
3. If applicable, install #31-6007
1
⁄8 -27 pipe
plug in hole #5 in bottom of pump cover.
NOTE - Earlier S&S oil pumps have only one location for
oil return.
b. 1992-up
1. Install 90° elbow fitting #31-6008 in hole
#5 in bottom of pump cover.
Fitting should be directed toward flat,
machined surface of cover for rigid OEM
oil lines, otherwise position fitting for most
convenient oil line installation.
2. If rigid OEM lines are to be used, install
compression fitting #50-8120 (H-D
#63523-92A) in 90° elbow fitting.
Otherwise install hose fitting #31-6009.
3. Install #31-6007
1
⁄8 -27 pipe plug in hole
#1 in top of pump cover.
3. Primary Chain Oil Supply
a. 1936-1964
1. Install #31-6028
1
⁄16 -27 pipe plug in hole
#8 in top of cover.
2. Install #31-6026 adjuster screw, #31-6035
brass washer, and #31-6027 lock nut into
threaded hole in side of pump body.
Bottom screw two or three times to seat
properly. See Picture 31.
Picture 25