S&S Cycle HVHP Oil Pump Kits for Big Twin - Manual (Page 2)

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S&S® HIGH VOLUME, HIGH PRESSURE OIL PUMPS
The HVHP oil pumps were introduced by S&S in early 2002. HVHP pumps are similar to previous models in function but have major machined
differences. See Picture 1 below.
1- Part number can be found on bottom surface of oil pump body. In most applications a small mirror can be used to identify part number with
engine still in frame.
NOTES:
•
HVHP pump kits DO NOT use the same gaskets and only use a few other internal parts used in previous kits. See Picture 2 below.
•
HVHP oil pumps provide 38% more oil supply volume. They also increase pressure over 1992 and later Harley-Davidson® pumps. They offer 61% more
scavenging than 1992 and later style pumps.
2- Chrome Plating - S&S does not recommend chrome plating oil pump body or cover. Proper preparation for plating requires abrasive buffing
compounds which can plug critical passages and otherwise damage oil pump. Also, it is extremely difficult to chrome plate oil pump without
altering critical machined surfaces. Chrome in these areas can impair pump's performance by altering critical operating tolerances. In addition,
chrome may flake off and cause damage to pump and engine.
3- Powdercoating - Subjecting heat-treated alloys such as those used in S&S oil pumps, crankcases, cylinders and heads to excessive heat can
drastically alter hardness, strength and other important properties. Degree to which these properties are altered depends upon temperatures
reached and duration of exposure. When powdercoating or otherwise processing alloy parts, S&S exposes them to a maximum temperature of
370°F for no longer than 20 minutes. Under no circumstances should parts be heated past 400°F. Owner assumes all risk and liability for altering
oil pump except to insure correct fit. See following note.
4- Increased wall thickness of some aftermarket crankcases may interfere with proper installation of oil pump. Procedure for insuring correct fit is
described in Installation section.
5- Instructions for HVHP pumps are different from instructions for previous pumps. Refer to S&S Oil Pump Instructions 51-1041 for information on
previous pumps. (Instructions can be downloaded at www.sscycle.com; call 608-627-1497 or e-mail [email protected] if unable to download
instructions from the website.
Plating or otherwise altering S&S oil pump or any component there of may cause irreversible damage to pump and interfere with engine
lubrication.Damages caused by altered oil pump or component will not be covered under warranty.
Picture 2
CAUTION
Picture 1