Vintage Dirt Bike Q & A

Anything and everything about Vintage Dirt Bikes! After you Register, email nathan@alp-sys.com and let me know so I can activate you.
It is currently Wed Jun 19, 2019 3:55 am

All times are UTC - 7 hours [ DST ]




Post new topic Reply to topic  [ 6 posts ] 
Author Message
 Post subject: Part ID for Rebuild
PostPosted: Sat May 18, 2019 8:47 pm 
Offline

Joined: Tue May 12, 2015 11:12 am
Posts: 3
Hello. I have an 74 CR250 Crankcase that I am rebuilding. However, I have a part that I have no idea what it goes to. Any help would be appreciated! The closest thing I see to it in my parts manual is in the gear shift drum, with it being 4 small cylinders. But I never had that pulled apart.

https://share.icloud.com/photos/0KhlPgx ... Q#Galt,_CA


Attachments:
AFC2C9D4-6AC7-4DD7-8F77-11AFE6B29E47.jpeg
AFC2C9D4-6AC7-4DD7-8F77-11AFE6B29E47.jpeg [ 633 KiB | Viewed 121 times ]
Top
 Profile  
 
 Post subject: Re: Part ID for Rebuild
PostPosted: Sun May 19, 2019 12:14 pm 
Offline

Joined: Sat Jun 03, 2017 1:39 pm
Posts: 14
Location: London , England
They look like locating dowels


Top
 Profile  
 
 Post subject: Re: Part ID for Rebuild
PostPosted: Sun May 19, 2019 12:45 pm 
Offline

Joined: Tue May 12, 2015 11:12 am
Posts: 3
M@tt,

Do you know what they would have came out of? Everything was blown apart in a box. I’m looking along the edge of the case, but not seeing small enough holes for them to insert. Thanks!


Top
 Profile  
 
 Post subject: Re: Part ID for Rebuild
PostPosted: Sun May 19, 2019 4:02 pm 
Offline

Joined: Sat Jun 03, 2017 1:39 pm
Posts: 14
Location: London , England
They should be visible on 2 of the screw holes that join the 2 crank cases together - you can try them in the gasket holes either end of the engine

Part# 26 on CMSNL here
https://www.cmsnl.com/honda-cr250m-elsi ... OGj_4rTWhB


Top
 Profile  
 
 Post subject: Re: Part ID for Rebuild
PostPosted: Sun May 19, 2019 5:43 pm 
Offline

Joined: Tue May 12, 2015 11:12 am
Posts: 3
Unfortunately that’s not it. I have all those. This is much smaller and not hollow.


Attachments:
C0EA3CA7-7F6B-4866-AE31-C3D93F1DFBF7.jpeg
C0EA3CA7-7F6B-4866-AE31-C3D93F1DFBF7.jpeg [ 1.87 MiB | Viewed 106 times ]
EA527DFD-8977-479D-88E5-4CD4013EEFF1.jpeg
EA527DFD-8977-479D-88E5-4CD4013EEFF1.jpeg [ 1.87 MiB | Viewed 106 times ]
Top
 Profile  
 
 Post subject: Re: Part ID for Rebuild
PostPosted: Mon May 20, 2019 9:11 am 
Offline

Joined: Sat Jun 03, 2017 1:39 pm
Posts: 14
Location: London , England
Apologies now I see them in your hand they’re clearly not the dowels I was thinking of
I think you’re right with your initial assessment and they’re 2 of 4 rollers in the shift drum if they measure 10x4 mm according to item 23

https://www.cmsnl.com/honda-cr250m-elsi ... OLCdYrTWhA


Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 6 posts ] 

All times are UTC - 7 hours [ DST ]


Who is online

Users browsing this forum: No registered users and 5 guests


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Search for:
Jump to:  
cron
Powered by phpBB® Forum Software © phpBB Group