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> fan removal, tool
Dave_Darling
post Mar 21 2011, 12:25 AM
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As far as I know, all Type IVs used a Woodruff key between the nose of the crank and the crank hub. The PET calls it "woodruff key, 4 x 5", P/N N 012 708 2.

You can also try searching for it. It usually doesn't stay in the crank or with the hub.

--DD
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914itis
post Mar 21 2011, 06:38 AM
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I definitely didn't notice it and its not on the floor. What would hapen if its missing? Ate they also on the early engines )(1970). Shouldd I pull the hub out again or can I do a test to make sure the hub is fine. What is its purpose?
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ChrisFoley
post Mar 21 2011, 10:15 AM
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QUOTE(ppetion @ Mar 21 2011, 08:38 AM) *

I definitely didn't notice it and its not on the floor. What would hapen if its missing? Ate they also on the early engines )(1970). Shouldd I pull the hub out again or can I do a test to make sure the hub is fine. What is its purpose?

It keeps the hub indexed on the crankshaft. Absolutely essential.
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914itis
post Mar 21 2011, 10:24 AM
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QUOTE(Racer Chris @ Mar 21 2011, 12:15 PM) *

QUOTE(ppetion @ Mar 21 2011, 08:38 AM) *

I definitely didn't notice it and its not on the floor. What would hapen if its missing? Ate they also on the early engines )(1970). Shouldd I pull the hub out again or can I do a test to make sure the hub is fine. What is its purpose?

It keeps the hub indexed on the crankshaft. Absolutely essential.


any picture on where it sits?
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ChrisFoley
post Mar 21 2011, 10:35 AM
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QUOTE(ppetion @ Mar 21 2011, 12:24 PM) *

QUOTE(Racer Chris @ Mar 21 2011, 12:15 PM) *

QUOTE(ppetion @ Mar 21 2011, 08:38 AM) *

I definitely didn't notice it and its not on the floor. What would hapen if its missing? Ate they also on the early engines )(1970). Shouldd I pull the hub out again or can I do a test to make sure the hub is fine. What is its purpose?

It keeps the hub indexed on the crankshaft. Absolutely essential.


any picture on where it sits?

No picture.
It rests in a round bottom groove in the tapered part of the crankshaft.
The hub has a long groove that fits over the key as you slide it onto the crank.
It only fits together one way.
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Cap'n Krusty
post Mar 21 2011, 11:04 AM
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If it's missing, you can't be sure you have the fan oriented so the timing mark is correct. It MUST be in perfect condition and in there, and the slot in the crank must be undamaged. Furthermore, you MUST replace the o-ring behind the hub!

The Cap'n
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914itis
post Mar 21 2011, 11:11 AM
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QUOTE(Cap'n Krusty @ Mar 21 2011, 01:04 PM) *

If it's missing, you can't be sure you have the fan oriented so the timing mark is correct. It MUST be in perfect condition and in there, and the slot in the crank must be undamaged. Furthermore, you MUST replace the o-ring behind the hub!

The Cap'n


i just went home and removed the crank from my spare engine to see if there was one, and it is the same thing, I dont see anything,

picture attached of all the items that I removed.. I am completely lost. what am i missing here?


Attached image(s)
Attached Image Attached Image
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Cap'n Krusty
post Mar 21 2011, 11:15 AM
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I could be wrong, because it's hard to see, but it looks like the key is still in the crank at about the 2 o'clock position. Clean that taper up well before you put it back together. Both on the crank and on the hub.

The Cap'n
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914itis
post Mar 21 2011, 11:30 AM
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QUOTE(ppetion @ Mar 21 2011, 01:11 PM) *

QUOTE(Cap'n Krusty @ Mar 21 2011, 01:04 PM) *

If it's missing, you can't be sure you have the fan oriented so the timing mark is correct. It MUST be in perfect condition and in there, and the slot in the crank must be undamaged. Furthermore, you MUST replace the o-ring behind the hub!

The Cap'n


i just went home and removed the crank from my spare engine to see if there was one, and it is the same thing, I dont see anything,

picture attached of all the items that I removed.. I am completely lost. what am i missing here?

SOB, you mean that gap looking thing that the locks the hub from spinning without the shaft? that thing don't even look like it can come out.


Thanks
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ChrisFoley
post Mar 21 2011, 02:34 PM
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That's a Woodruff key, sometimes called a half moon key.
Tap down on one end and the other end will come up.
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914itis
post Mar 21 2011, 10:47 PM
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QUOTE(Racer Chris @ Mar 21 2011, 03:34 PM) *

That's a Woodruff key, sometimes called a half moon key.
Tap down on one end and the other end will come up.

thanks all, I am not sure what happened to the one on the good engine, I pulled the crank back and it was in fact missing... looked all the floor didnt find it. i am using the one from the spare engine. its a great thing that you mentioned it Cap'n.

after all thats why you are the Cap'n..
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VaccaRabite
post Mar 22 2011, 07:11 AM
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Yep, Cap beat me to it.

Its common to find them somewhat rusted into the hub. At least on the humid, salty East Coast it is. I did not know it was removable either until I knocked it loose cleaning everything one day.

Zach
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