facebook1 youtube1 twitter1 instagram linkedin1 pinterest1

NOTICE:  If you are not a free registered member of the site, you will not see the photos in the forum, and you won't be able to access our premium member content. Please consider joining our community! REGISTER AND MAKE THIS BOX DISAPPEAR!

Shift shaft tweaked - straighten or replace?

  • Gem80DT175
  • Gem80DT175's Avatar Topic Author
  • Offline
  • New Member
  • New Member
  • Posts: 3
  • Likes received: 0
Was in the final stages of putting the top end back on of my first restore - 78 DT175 - and was cleaning up dirt/oil residue when I noticed the shift shaft is tweaked!  Is this likely the cause of the oil leakage?  Should I try to straighten it and put a new seal in?  Or a new shaft and seal, which would mean breaking down the engine I just put back together?  Wish I saw this soon! ugh.  Thanks for your input!!
25 May 2022 17:10 #1

This message has attachments images.
Please log in or register to see it.

Please Log in or Create an account to join the conversation.

  • Posts: 1293
  • Likes received: 935

Replied by 1971DT250 on topic Shift shaft tweaked - straighten or replace?

Very risky to try to straighten it while it's still in the engine. Might crack the case.
The hours spent riding my Enduros is not deducted from my life span.
The following user(s) Liked this Post: JayB
25 May 2022 18:10 #2

Please Log in or Create an account to join the conversation.

  • Posts: 334
  • Likes received: 205
It looks like the seal is shot, there's a big old gap on the top. I might go ahead and try to replace the seal, if it's shifts okay, and just ride on.
25 May 2022 18:17 #3

Please Log in or Create an account to join the conversation.

  • Posts: 7981
  • Likes received: 2930
I guess ya going to have to straighten it to get it out eventualy oneday. I think [hope] you'd be ok with a good fitting strong steel tube over it right up to the case with seal removed and give it some heave ho. Looks like it bent down without breaking the case & case looks stronger going upwards--i hope!!.
25 May 2022 19:20 #4

Please Log in or Create an account to join the conversation.

  • Posts: 408
  • Likes received: 192

Replied by Sneezles61 on topic Shift shaft tweaked - straighten or replace?

My DT 250a has one of those! The bent shaft also reamed an oblong shape into the casing… mine is still in a box.. waiting until I have the time to pay attention to it..
Sneezles61
26 May 2022 05:25 #5

Please Log in or Create an account to join the conversation.

  • MarkT
  • MarkT's Avatar
  • Away
  • Site Supporter
  • Site Supporter
  • Posts: 12018
  • Likes received: 7177
You only need to remove clutch cover to change shaft..

Challenge is getting bent one out without damaging case.  Several ways to do it...  all the ways I've done it require cutting/grinding shaft off and patience.    
 
1963 YG1-T, 1965 MG1-T, Allstate 250, 1970 CT1b, 1971 R5, 1973 AT3MX, 1974 TS400L, 1975 RD350, 1976 DT175C, 1976 Husqvarna 250CR, 1981 DT175G, 1988 DT50, 1990 "Super" DT50, 1991 RT180, 2017 XT250
The following user(s) Liked this Post: Swoop56, HouseofEnduro, Ht1kid, Pete-RT1
26 May 2022 08:28 #6

Please Log in or Create an account to join the conversation.

  • Posts: 898
  • Likes received: 1136

Replied by Pete-RT1 on topic Shift shaft tweaked - straighten or replace?

It's not one I'd risk trying to straighten in situ, the risk of cracking the case is high and the ease of replacing the shaft with another makes that the best option in my opinion.
As Mark says, it can be replaced by removing the clutch cover.
Cut it off close to the left and case and ease it out, replacement in and off you go.
Yamaha RT-1
Yamaha CT1-B
Yamaha CT1-C
Yamaha AT1-C
Yamaha CT3
26 May 2022 09:57 #7

Please Log in or Create an account to join the conversation.

  • MarkT
  • MarkT's Avatar
  • Away
  • Site Supporter
  • Site Supporter
  • Posts: 12018
  • Likes received: 7177
If it's bent inside the seal recess you may be able to cut off on clutch side and pull out from shifter side.  

Or cut off on shifter side and use die grinder carefully on stub in recess until pulls out easily from clutch side
1963 YG1-T, 1965 MG1-T, Allstate 250, 1970 CT1b, 1971 R5, 1973 AT3MX, 1974 TS400L, 1975 RD350, 1976 DT175C, 1976 Husqvarna 250CR, 1981 DT175G, 1988 DT50, 1990 "Super" DT50, 1991 RT180, 2017 XT250
The following user(s) Liked this Post: Ht1kid
26 May 2022 10:55 #8

Please Log in or Create an account to join the conversation.

  • Posts: 7
  • Likes received: 3

Replied by Vintage465 on topic Shift shaft tweaked - straighten or replace?

I'd make my descision based on the availability of a replacement shaft.  I think if you couldn't get a replacement, I'd split the cases and repair it.  I say split the cases cause I don't think you'd be able to pull it thu the cases from the clutch side with it being bent. I do believe with the cases would split even with it bent cause you get a little "play" as the cases come apart.  Even if I could replace it I'd still likely split the cases to get the bent one out and straighten it out to have for a spare.
11 Jun 2022 12:51 #9

Please Log in or Create an account to join the conversation.

  • Posts: 7981
  • Likes received: 2930
I shouldn't say this, but it bent down without breaking the case, & case looks stronger going upwards--so--i'll leave it there!!
11 Jun 2022 15:17 #10

Please Log in or Create an account to join the conversation.

Moderators: yamadminEnduronutMakotosunDEETVinnieDevinJames Hart