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Workshop => Engine and Bottom End => Topic started by: rablack21 on August 07, 2014, 11:33:07 AM

Title: Left crank seal installation tool?
Post by: rablack21 on August 07, 2014, 11:33:07 AM

What do you guys use to install the left crank seal if the engine is still together? You can't use a regular socket the same size as the crank seal as it will not clear the crank shaft. I thought i would ask before going and making a tool.

Title: Left crank seal installation tool?
Post by: Hawaiiysr on August 07, 2014, 11:45:18 AM

Pvc?

Title: Left crank seal installation tool?
Post by: Bowtie316 on August 07, 2014, 12:02:22 PM

That one didn't take too much effort to install last time I did one.  I just pushed it most of the way with my fingers and tapped it in lightly with a brass punch. It is supposed to be installed 1/4" past flush with the case.

Title: Left crank seal installation tool?
Post by: rablack21 on August 07, 2014, 12:29:26 PM

Quote from: Bowtie316;40516

That one didn't take too much effort to install last time I did one.  I just pushed it most of the way with my fingers and tapped it in lightly with a brass punch. It is supposed to be installed 1/4" past flush with the case.

I considered this approach as well. Did you freeze the seal first to shrink it or no?

Title: Left crank seal installation tool?
Post by: Bowtie316 on August 07, 2014, 12:46:39 PM

Quote from: rablack21;40517

I considered this approach as well. Did you freeze the seal first to shrink it or no?

I didn't have to.  It was a hot rods seal so that could have made a difference.

Title: Left crank seal installation tool?
Post by: Tbone07 on August 07, 2014, 01:26:27 PM

I always install mine prior to installing the crank. I get it on there flush with the case(using heat + freezing + big socket). Then let the stator push it in the rest of the way

Also, the Tusk crank puller I use can push the seal flush, if I didn't feel like using a socket

Title: Left crank seal installation tool?
Post by: Bowtie316 on August 07, 2014, 01:56:44 PM

Quote from: Tbone07;40521

I always install mine prior to installing the crank. I get it on there flush with the case(using heat + freezing + big socket). Then let the stator push it in the rest of the way

Also, the Tusk crank puller I use can push the seal flush, if I didn't feel like using a socket

I would be concerned with the stator rubbing on the seal with that method.

Title: Left crank seal installation tool?
Post by: mennis1971 on August 08, 2014, 07:29:12 AM

I always put mine in flush and let the stator  push it in the rest of the way. The oem stator backing plate has 3 "fingers" that will seat it for you. IDK abt a cr250 ign tho.

Title: Left crank seal installation tool?
Post by: Bowtie316 on August 08, 2014, 08:06:22 AM

Ok, I was thinking flywheel (spinning) not stator (stationary).  I just did what the manual said and installed it 1/4" deep.  I can see now how either method would be fine.  

That is probably why the seal can fit somewhat loose in the case, because the stator holds it in.