The Spares Company
Club Shop/Regalia
Parent Website
Contact Officials
Machine Registrar
Club Secretary
Membership Secretaries
MPH Editor and Forum Administrator.
Section Newsletters
Technical Databases
Photos
Home
What's new
Latest activity
Forums
New posts
What's new
New posts
Latest activity
Information
Bike Modifications
Machine Data Services
Manufacturers Manuals
Spare Parts Listings
Technical Diagrams
Whitakerpedia (Vincent Wiki)
The Club
MPH Material Archive
Flogger's Corner
Obituaries
VOC Sections
Local Sections
Local Section Newsletters
Miscellaneous
Club Assets
Club History
Club Rules
Machine Data Services
Meeting Documents
Miscellaneous
Essential Reading
Magazine/Newspaper Articles/Letters
Adverts and Sales Brochures
The Mighty Garage Videos
Bikes For Sale (Spares Company)
Log in
Register
What's new
New posts
Menu
Log in
Register
Install the app
Install
Home
Forums
Forums: Public Access
Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Starting the shadow after few months - Oil problem
JavaScript is disabled. For a better experience, please enable JavaScript in your browser before proceeding.
You are using an out of date browser. It may not display this or other websites correctly.
You should upgrade or use an
alternative browser
.
Reply to thread
Message
<blockquote data-quote="John Appleton" data-source="post: 15292" data-attributes="member: 760"><p>As John says, there is no anti sumping valve on a vin , unless fitted as an extra. The usual way oil flows back to the sump is either through the clearance between plunger and oil pump sleeve or, in rarer instances, between the outside of the sleeve and the parent bore of the crankcase.</p><p>We must assume in the case in question that there is no driveside mainshaft oil seal modification fitted. In this case the oil flows slowly back, as described above, until it reaches the level of the mainshafts. It then makes its way through the drive side oil scroll into the primary case and, if the wine bottle cork is missing from the left hand kickstart shaft tunnel, along said tunnel and into the kickstart cover and, usually, onto the floor.</p><p>If the two oil seals protecting the clutch are in good order there is a fair chance the clutch has survived without contamination. The advice about draining the various housings is sound, and the bike should run as well as it did at the end of last season, but the wise course is to keep the matter under observation to ensure the amount of flow back is acceptable.</p><p>John</p></blockquote><p></p>
[QUOTE="John Appleton, post: 15292, member: 760"] As John says, there is no anti sumping valve on a vin , unless fitted as an extra. The usual way oil flows back to the sump is either through the clearance between plunger and oil pump sleeve or, in rarer instances, between the outside of the sleeve and the parent bore of the crankcase. We must assume in the case in question that there is no driveside mainshaft oil seal modification fitted. In this case the oil flows slowly back, as described above, until it reaches the level of the mainshafts. It then makes its way through the drive side oil scroll into the primary case and, if the wine bottle cork is missing from the left hand kickstart shaft tunnel, along said tunnel and into the kickstart cover and, usually, onto the floor. If the two oil seals protecting the clutch are in good order there is a fair chance the clutch has survived without contamination. The advice about draining the various housings is sound, and the bike should run as well as it did at the end of last season, but the wise course is to keep the matter under observation to ensure the amount of flow back is acceptable. John [/QUOTE]
Insert quotes…
Verification
What was Mr Irving's Christian Name?
Post reply
Home
Forums
Forums: Public Access
Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Starting the shadow after few months - Oil problem
This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
By continuing to use this site, you are consenting to our use of cookies.
Accept
Learn more…
Top