Trouble joining cases - Triumph Forum: Triumph Rat Motorcycle Forums
» Main Menu

Discussion Forums
 » Twins
 » Tiger
 » General
 » RAT

Features
 » Blogs

Motorcycle.com Links

Contribute
 » Photo

Motorcycle Forums
» Insurance
» Sponsors
» Our Partners
»ATV Reviews
»Motorcycle Games

Classic, Vintage & Veteran For Coventry and Meriden Models. Anything pre-Hinckley goes.

Reply
 
LinkBack Thread Tools Display Modes
Old 08-30-2012, 03:26 PM   #1 (permalink)
Member
Grand Prix 250
Main Motorcycle: 1973 Triumph TR7RV
 
Join Date: Jul 2012
Location: Bethany, Connecticut United States
Posts: 71
Other Motorcycle: 1969 Triumph TR6R
Trouble joining cases

I've hit a new wall in my TR7 engine rebuild.

I tried to put my case halves together today. I started by introducing the crank to the drive side case (per Hughie Hancox's DVD), then attempted to mate the drive side case and crank with the timing side. Unfortunately the crank shaft would not fully insert into the timing side main bearing, and the gasket sealer dried too much (I think...). There was a little more than half an inch to go before it was fully home. Now, I can't get it all back apart because the shaft seems stuck in the timing side bearing. Before I figure out why exactly it's not going together, I need to get this thing apart. I gave each end of the crank shaft some firm whacks with a plastic mallet with no success.

I'm using ThreeBond 1104. Anyone know how long my window of opportunity is to get the cases joined up? The tube says dry for approx one minute before joining. That's a pretty small window...

Thanks for helping out.
Miller261 is offline   Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
Old 08-30-2012, 04:32 PM   #2 (permalink)
Member
Grand Prix 250
Main Motorcycle: 1973 Triumph TR7RV
 
Join Date: Jul 2012
Location: Bethany, Connecticut United States
Posts: 71
Other Motorcycle: 1969 Triumph TR6R
Never mind! I got it apart. What a pain in the butt.

I warmed it up a bit and hit with more resolve from the timing side. Eventually it came apart. My worry was that the bearing would come out with the shaft, since I obviously have too much interference between the journal and timing side MB. Luckily the bearing is still seated ok.

Thanks.
Miller261 is offline   Reply With Quote Quick reply to this message
Old 08-30-2012, 05:24 PM   #3 (permalink)
Moderator
Pole Position
Main Motorcycle: Rickman T120
 
Join Date: May 2010
Location: Victoria Australia
Posts: 3,996
Other Motorcycle: T160,TR6
I'd recommend using the 3-piece roller bearing on the timing side.It's a stronger bearing,and it makes assembly very easy.
You can also easily check end-float before the crank pinion is tightened.
I use Loctite 515 sealant.It will not set until the cases are closed.
Mr.Pete is online now   Reply With Quote Quick reply to this message
Old 08-30-2012, 05:42 PM   #4 (permalink)
Member
Grand Prix 250
Main Motorcycle: 1973 Triumph TR7RV
 
Join Date: Jul 2012
Location: Bethany, Connecticut United States
Posts: 71
Other Motorcycle: 1969 Triumph TR6R
Thanks, Mr Pete.

Can you send me a link or two to the bearing?
Miller261 is offline   Reply With Quote Quick reply to this message
Old 08-31-2012, 06:35 PM   #5 (permalink)
Moderator
Pole Position
Main Motorcycle: Rickman T120
 
Join Date: May 2010
Location: Victoria Australia
Posts: 3,996
Other Motorcycle: T160,TR6
The Triumph part number for the bearing is 60-7362.
RHP bearing number NUP 306 ETCN.
CN only refers to "normal" internal clearance.

You might find this interesting too;http://www.triumphrat.net/classic-vi...f-t140v-3.html
Mr.Pete is online now   Reply With Quote Quick reply to this message
Old 09-01-2012, 01:20 PM   #6 (permalink)
Member
Grand Prix 250
Main Motorcycle: 1973 Triumph TR7RV
 
Join Date: Jul 2012
Location: Bethany, Connecticut United States
Posts: 71
Other Motorcycle: 1969 Triumph TR6R
Got it together yesterday with the standard ball bearing. My method: I polished the crank shaft journal more thoroughly, knocking down a little booger (almost undetectable to the eye and finger) with some fine emery. I staged all my hardware. I lightly heated the timing side case and bearing until the bearing had obviously expanded. I spread the Three Bond as neatly and expeditiously as possible, moved quickly, and voila. Everything is together and turning exactly as it should.

Yes, that thread is very interesting.

I am lucky because this low-mileage motor had never been apart before I dug into it, so I got to see exactly what it looked like from the factory. I have been taking my time, taking copious pictures and notes, and sparing no expense on parts. Here and there I have found deviations from the parts book and workshop manual, but I trust the way it was together before I trust the diagram.
Miller261 is offline   Reply With Quote Quick reply to this message
Old 11-22-2012, 07:34 PM   #7 (permalink)
Senior Member
SuperBike
Main Motorcycle: 1999 T'Bird Sport
 
lovecuba's Avatar
 
Join Date: Apr 2007
Location: Rangiora, New Zealand
Posts: 1,725
Extra Motorcycle: 1977 T140
Crankcase Assembly

Quote:
Originally Posted by Miller261 View Post
Got it together yesterday with the standard ball bearing. My method: I polished the crank shaft journal more thoroughly, knocking down a little booger (almost undetectable to the eye and finger) with some fine emery. I staged all my hardware. I lightly heated the timing side case and bearing until the bearing had obviously expanded. I spread the Three Bond as neatly and expeditiously as possible, moved quickly, and voila. Everything is together and turning exactly as it should.

Yes, that thread is very interesting.

I am lucky because this low-mileage motor had never been apart before I dug into it, so I got to see exactly what it looked like from the factory. I have been taking my time, taking copious pictures and notes, and sparing no expense on parts. Here and there I have found deviations from the parts book and workshop manual, but I trust the way it was together before I trust the diagram.
Followed your procedure, using a little heat also, c/shaft entered timing bearing with a little rubber hammer persausion, all good and buttoned up nicely.
lovecuba is online now   Reply With Quote Quick reply to this message
Old 11-22-2012, 11:56 PM   #8 (permalink)
Member
Grand Prix 250
Main Motorcycle: 1973 Triumph TR7RV
 
Join Date: Jul 2012
Location: Bethany, Connecticut United States
Posts: 71
Other Motorcycle: 1969 Triumph TR6R
Great! Did you use the 3 piece bearing or the standard one?
Miller261 is offline   Reply With Quote Quick reply to this message
Old 11-23-2012, 03:17 AM   #9 (permalink)
Senior Member
SuperBike
Main Motorcycle: 1999 T'Bird Sport
 
lovecuba's Avatar
 
Join Date: Apr 2007
Location: Rangiora, New Zealand
Posts: 1,725
Extra Motorcycle: 1977 T140
Joining up Cases

Quote:
Originally Posted by Miller261 View Post
Great! Did you use the 3 piece bearing or the standard one?
Used a heavy duty (11) ball bearing.
lovecuba is online now   Reply With Quote Quick reply to this message
Old 11-23-2012, 04:03 AM   #10 (permalink)
Senior Member
Powerbike
Main Motorcycle: '74 T140V Chop
 
Join Date: Jul 2012
Location: Woodbridge, UK
Posts: 388
May as well stick my $0.02 here.

Heating up casings/hitting them hard can warp them causing leaks. Worse than that, hitting a casing over a bearing could damage them. To the untrained hand, it'll feel fine. It could fail earlier than you would hope.

Always do everything gently. If you need to hit it, there's a good chance something isn't right.

If you DO need to force it in, use a press.
loxx101 is offline   Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
Reply

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the Triumph Forum: Triumph Rat Motorcycle Forums forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
User Name:
If you do not want to register, fill this field only and the name will be used as user name for your post.
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter your valid email address, that can receive an automated confirmation message. Otherwise, you won't be able to gain full access.
Email Address:

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.



Thread Tools
Display Modes

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 Off
Pingbacks are Off
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
Joining from NYC. rich.burdon The Welcome Center 1 03-13-2011 02:49 PM
Joining RAT?? blabride Twins Talk 12 08-05-2010 11:21 AM
Joining BIR rvman Twins Technical Talk 38 04-24-2007 09:30 AM
trade my thrux side cases for your bonnie cases flynbulldog1 Twins Talk 1 03-21-2006 04:39 PM
Joining R.A.T bosoxrider Twins Talk 10 06-23-2005 01:03 PM

Powered by vBadvanced CMPS v3.2.2

All times are GMT -4. The time now is 07:58 PM.



Motorcycle News, Videos and Reviews
Honda Grom Forum Harley Davidson Forum Honda 600RR Kawasaki Forum Yamaha R6 Forum Yamaha FZ-09 Forum
1199 Panigale Forum Roadglide Forum Honda CBR1000 Forum Vulcan Forum Yamaha R1 Forum Yamaha R3 Forum
Ducati Monster Forum Harley Forums Honda CBR250R Forum ZX10R Forum Star Raider Forum Yamaha Viking Forum
Suzuki GSXR Forum V-Rod Forums Honda Shadow Forum Kawasaki Motorcycle Forum Star Warrior Forum KTM Duke 390 Forum
SV650 Forum BMW S1000RR Forum Honda Fury Forum Kawasaki Versys Forum Drag Racing Forum Ducati 899 Panigale Forum
Suzuki V-Strom BMW K1600 Triumph Forum Victory Forums Sportbikes BMW NineT Forum
Volusia Forum BMW F800 Forum Triumph 675 Forum MV Agusta Forum HD Street Forum Suzuki GW250 Forum
Yamaha Motorcycles Victory Gunner Forum Honda Vultus Forum

Garage Plus vBulletin Plugins by Drive Thru Online, Inc.

Search Engine Optimization by vBSEO 3.6.0