Jump to content

1970 DT1 Oil Seal replacement


RogerD
 Share

Recommended Posts

Haven't been here in awhile...had another bout with congestive heart failure that kept me down for a bit. Ready to start on my restoration - 1970 DT1.

I know we've been over this all before, but i need to replace the oil seals. Can I just pull them off the ends of the crankshaft without splitting the cases, and just press the new ones in?

Any tricks or advice? A good source for the seals other than ebay?

Roger

Link to comment
Share on other sites

Do you want an ad-free experience? Join today and help support the Yamaha Owners Club.

Yip rodger , you can remove the old seals from the crank, after flywheel , and pinion gear removed, two or three self tappers screwed into old seals, to aid removal,

Link to comment
Share on other sites

  • Moderator

yeah greetings again Roger, as blackhat said...maybe with a bit of a blow over from a hot air gun just to warm them a bit first.

According to the parts list the seals are

Right side...SW-42-72-10

Left side...SW-30-72-10

You should be able to pick them up cheaply at any good industrial bearings and seals supplier...Far cheaper than Yamaha packaged ones :thumb:

Link to comment
Share on other sites

Thanks for your help! I've never changed them this way before.

The bike runs, but kinda rough and I always like to get them running well before starting restoration work.

Hopefully the seals will do it. I didn't do a leak test, but suspect that's the case...

Roger in Florida

th_DSCF0006.jpg?t=1325713176

Link to comment
Share on other sites

Had another case of Congestive Heart Failure last Thursday.... Got out of the hospital last night. I'd still be there if they decided to do the bypass surgery....

Felling better, may even do the oil seals this weekend!!!!

Rog

Link to comment
Share on other sites

  • 1 month later...

Finally felt good enough to work on the bike.

I am trying to replace the clutch-side oil seal on the crankshaft.

I have the clutch removed.

I have the nut and gear removed from crankshaft.

I removed the large c-ring, and It looks like there is a large washer behind it holding the oil seal in place.

I,m afraid to just start prying on it. It looks like there is a sealant of some kind around the outer edge of this washer.

Advice???

Thanks,

Roger

Link to comment
Share on other sites

Yeh rodger" i scewed two self tapping screws in , to give me some purchase, thier will be sealant on outers edges of seal,

. just wrestle it out, , :smash:

Link to comment
Share on other sites

Sorry for the delay - I've been trying to put a photo in here for half an hour......

What I'm talking about is not the seal itself, but a big copper-colored washer keeping the seal in place right? I have a new seal, but not a spare washer.....

Still trying to post a phto from photobucket - drives me nuts!!!!

Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

 Share

  • Who's Online (See full list)

    There are no registered users currently online

  • Recently Browsing

    No registered users viewing this page.

×
×
  • Create New...