Author Topic: tappet hole on a 78 cb550k cylinder head cover messed up  (Read 1154 times)

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Offline gbal06

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tappet hole on a 78 cb550k cylinder head cover messed up
« on: November 06, 2017, 10:03:58 PM »
is there a way to fix the thread of a tappet hole?  Thanks

Offline Airborne 82nd

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Re: tappet hole on a 78 cb550k cylinder head cover messed up
« Reply #1 on: November 06, 2017, 10:11:42 PM »
Can you get the cover off of a 550 without pulling the engine?

Offline TwoTired

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Re: tappet hole on a 78 cb550k cylinder head cover messed up
« Reply #2 on: November 06, 2017, 11:29:48 PM »
is there a way to fix the thread of a tappet hole?  Thanks
Possibly.  Depends on the extent of damage.  Got pics?

Can you get the cover off of a 550 without pulling the engine?
Yes
Lloyd... (SOHC4 #11 Original Mail List)
72 500, 74 550, 75 550K, 75 550F, 76 550F, 77 550F X2, 78 550K, 77 750F X2, 78 750F, 79CX500, 85 700SC, GL1100

Those that learn from history are doomed to repeat it by those that don't learn from history.

Offline ekpent

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Re: tappet hole on a 78 cb550k cylinder head cover messed up
« Reply #3 on: November 07, 2017, 04:53:49 AM »
  Is there possible a thread or two of the old cap possible stuck in the threads of the valve cover making it feel damaged ? Not uncommon to break those caps trying to get them off for the first time in ages if not done correctly.

Offline GardenGnome

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Re: tappet hole on a 78 cb550k cylinder head cover messed up
« Reply #4 on: November 09, 2017, 09:22:49 PM »
   ...Not uncommon to break those caps trying to get them off for the first time in ages if not done correctly.

Can confirm.
If I've learned anything about building a motorcycle, it's check and re-check your work before you put it all back together. Although you do gain more experience by doing it twice.