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
Stripped oil pump
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="Howard" data-source="post: 13614" data-attributes="member: 271"><p>John</p><p> </p><p>That's not the case. Look at the edges of the cut made by the worm, the angle is the same as the cam slot for the pawl (but opposite). The plunger must have been turning to wear out every tooth, and it must have been reciprocating to form that wear pattern.</p><p> </p><p>Trev</p><p> </p><p>If the worm was loose on the crankshaft surely it would spin on the crank and not wear the plunger.</p><p> </p><p> </p><p>I think Timetraveller is on the right track when he says "If the plunger is hard to file then it is probably too hard to wear out in 10 minutes." 10 minutes at a fast tickover (I guess) is say 12,000 revs between 12 teeth on the plunger, that's 1000 rubs per tooth. With or without lube, that's not a lot for hardened gear teeth, and quite frankly, the plunger isn't taking a lot of power. </p><p> </p><p>I'd try rubbing the file on the teeth (I assume you may have tested the bearing surface that's easiest to check - I would have), I've seen gears with very thin case hardening, once through the hardened skin they wear very quickly. If the teeth are hard, I haven't a clue what's wrong, I'm just not sure anyone's offered the right solution so far.</p><p> </p><p>H</p></blockquote><p></p>
[QUOTE="Howard, post: 13614, member: 271"] John That's not the case. Look at the edges of the cut made by the worm, the angle is the same as the cam slot for the pawl (but opposite). The plunger must have been turning to wear out every tooth, and it must have been reciprocating to form that wear pattern. Trev If the worm was loose on the crankshaft surely it would spin on the crank and not wear the plunger. I think Timetraveller is on the right track when he says "If the plunger is hard to file then it is probably too hard to wear out in 10 minutes." 10 minutes at a fast tickover (I guess) is say 12,000 revs between 12 teeth on the plunger, that's 1000 rubs per tooth. With or without lube, that's not a lot for hardened gear teeth, and quite frankly, the plunger isn't taking a lot of power. I'd try rubbing the file on the teeth (I assume you may have tested the bearing surface that's easiest to check - I would have), I've seen gears with very thin case hardening, once through the hardened skin they wear very quickly. If the teeth are hard, I haven't a clue what's wrong, I'm just not sure anyone's offered the right solution so far. H [/QUOTE]
Insert quotes…
Verification
The Series 'A' Rapide was known as the '********' Nightmare?
Post reply
Home
Forums
Forums: Public Access
Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Stripped oil pump
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