Shift Shaft Seal..A must to replace? - Yamaha YFZ450 Forum : YFZ450, YFZ450R, YFZ450X Forums
  Yamaha YFZ450

Suzuki Z400

Suzuki LT-R450



Kawasaki KFX450

ATV Videos

Can-Am DS450
 
Reply
 
LinkBack Thread Tools
Old 01-27-2011, 11:56 PM   #1 (permalink)
Senior Member
 
pbsandman7's Avatar
 
Join Date: Sep 2006
Location: Sleepin' in a tree fort
Posts: 2,807
Send a message via AIM to pbsandman7
Default Shift Shaft Seal..A must to replace?

Ok here's my scenario. 06 motor that I'm doing a complete rebuild on, top to bottom. I have already assembled the bottom end completely but realized after the fact that I might have been a tard for NOT replacing the shift shaft seal. It has never leaked and this is the first time the cases have been apart. I am debating pulling it back apart and replacing the seal for "piece of mind" sake but can't quite make up my mind.

I have had some friends tell me, they would do it if it was theirs and others have said that they have never replaced one in their motor....

At this point it wouldn't cost me anything more than the seal, a lock washer or 3 and some time. I'll be waiting on my cylinder for probably another couple weeks from JSR so I do have a little time..... but it is kind of a pain and the ass to split the cases completely for 1 seal.

What would you guys do?

How often does that seal leak?
__________________
MMADness I tell you!!

WR 513cc 65hp Super Duner
pbsandman7 is offline   Reply With Quote
Sponsored Links
Advertisement
 
Old 01-28-2011, 12:38 AM   #2 (permalink)
Senior Member
 
Join Date: Feb 2004
Posts: 3,246
Default

To replace that seal, just take the shifter off and poke the seal with a pick and pry it out. Then slide the new seal in. Put lithanium grease on the shaft to make it slippery. You can use a deep socket to push it in the case.
No need to take the motor out or dissasemble it.
__________________
Mechanic ITP & WORCS Pro #191
Daddio19@Gmail.com
daddio is offline   Reply With Quote
Old 01-28-2011, 01:00 AM   #3 (permalink)
Senior Member
 
pbsandman7's Avatar
 
Join Date: Sep 2006
Location: Sleepin' in a tree fort
Posts: 2,807
Send a message via AIM to pbsandman7
Default

Seriously..? Do you have to take the shift shaft out or can I just remove the actual shift lever?
__________________
MMADness I tell you!!

WR 513cc 65hp Super Duner
pbsandman7 is offline   Reply With Quote
Old 01-28-2011, 01:41 AM   #4 (permalink)
Senior Member
 
pbsandman7's Avatar
 
Join Date: Sep 2006
Location: Sleepin' in a tree fort
Posts: 2,807
Send a message via AIM to pbsandman7
Default

man this is a relief... I kept reading this and that about replacing the seal on a rebuild while you are in there and have the cases aparts.. etc etc. So i assumed it need to be split.
I feel like a tard but am happy that it will only take about 10mins vs most of a day. ppfffeeww.
__________________
MMADness I tell you!!

WR 513cc 65hp Super Duner
pbsandman7 is offline   Reply With Quote
Old 01-28-2011, 09:29 AM   #5 (permalink)
Senior Member
 
lbyfz450's Avatar
 
Join Date: Nov 2008
Location: bc/alberta
Posts: 1,819
Default

Yes just pull the shaft out then pick the seal out, install new seal, then install shift shaft..
Also you can put a loop of electrical tape over the shift shaft splinds to avoid damaging the seal.
__________________
04 YFZ. WR crank, MMAD 14.25 piston, CW 98mm, KW ss Valves, KW spring, Velocity head, YZF cams, GYTR Kickstart, Dyna FS, Nology coil, Rossier exhaust, Tusk clutch, FCI intake, Boyesen quickshot R&D fuel screw .
Elka triple rate front & back, Houser +2 arms, +1 swinger & +2 stem, G-force axle, Streamline lines, wave rotors, AC nerfs, IMS pegs, douglas beadlocks, MXR6 tires, Pro taper bars, ASV levers, Gibson stablizer, MP twist.
lbyfz450 is offline   Reply With Quote
Old 01-28-2011, 12:08 PM   #6 (permalink)
Senior Member
 
Join Date: Feb 2004
Posts: 3,246
Default

I've done it before without removing the shift shaft. In fact, it was between motos at a race, so it doesn't take long.
I also bought one of those cheap "seal pick" kits they sell at the auto parts store.
__________________
Mechanic ITP & WORCS Pro #191
Daddio19@Gmail.com
daddio is offline   Reply With Quote
Sponsored Links
Advertisement
 
Reply

Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On



All times are GMT -4. The time now is 01:48 AM.


Powered by vBulletin® Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Search Engine Friendly URLs by vBSEO 3.6.1