Author Topic: Tight threads sprocket shaft seal/bearing race retainer 55-68  (Read 365 times)

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Offline xlfan

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Tight threads sprocket shaft seal/bearing race retainer 55-68
« on: February 03, 2019, 02:36:14 PM »
What do you guys do, when threads are to tight, even with the  -.002" undersized thread Colony seal/retainer?

Is it adviseable to heat up crankcase at threads?

Offline xlfan

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Re: Tight threads sprocket shaft seal/bearing race retainer 55-68
« Reply #1 on: February 16, 2019, 01:19:17 PM »
Nobody ever experienced too tight threads @ bearing locknut? 

Offline Hillside Motorcycle

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Re: Tight threads sprocket shaft seal/bearing race retainer 55-68
« Reply #2 on: February 19, 2019, 08:22:46 AM »
I have not as yet.
Otto Knowbetter sez, "Even a fish wouldn't get caught if he kept his mouth shut"

Offline xlfan

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Re: Tight threads sprocket shaft seal/bearing race retainer 55-68
« Reply #3 on: April 12, 2019, 05:34:53 AM »
About 3 hrs with a handheld thread file to reduce oil seal/bearing retainer OD by .002", heating case to 300 deg F, a special tool to bolt down the bearing retainer socket to prevent it from slipping and a 3 ft breaker bar did the trick.

Offline Hillside Motorcycle

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Re: Tight threads sprocket shaft seal/bearing race retainer 55-68
« Reply #4 on: April 18, 2019, 04:20:26 AM »
Just had a 1959 FL crankcase on the bench for final assembly yesterday, after crank bebuild/balance.
-.002 seal worked good.
Still had to use good effort on the spanner wrench.
Otto Knowbetter sez, "Even a fish wouldn't get caught if he kept his mouth shut"