 Sheared key in fan hub. |
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| Jesco Reient |
 Oct 7 2012, 10:00 PM
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Member  Group: Members Posts: 135 Joined: 18-July 12 From: Western Washington Member No.: 14,690 Region Association: Pacific Northwest  |
So I was trying to change the seal on the fan Hub, Big leak, when tring to remove the fan hub from the crank it required a puller and an indordinate amount of pressure to break free. Once it had broken free I found that the crank keyway had sheared and was in two pieces. This had happened prior to our buying the car but is one more thing that has shown up during the Tune-Up (IMG:style_emoticons/default/headbang.gif) and leak fix that keeps growing with leaps and bounds (IMG:style_emoticons/default/chair.gif) . any Ideas on cause?
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| Cap'n Krusty |
Oct 7 2012, 10:22 PM
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Cap'n Krusty Group: Members Posts: 10,794 Joined: 24-June 04 From: Santa Maria, CA Member No.: 2,246 Region Association: Central California |
The keyway is the slot in the crank, the key is the little half-moon steel piece that sits in the keyways (one in the crank, the other in the hub). Buy a new key, see how it fits in the 2 slots. If it's a tight fit in both, clean the surfaces and put it back together. If it doesn't fit tight in the hub, get a good hub. If it's loose in the crank, you're SOL, the crank should be replaced. As for the hub being Inordinately tight, it's a taper fit, and it is supposed to be REALLY difficult to remove. If either tapered surface is bad, replace the bad component(s). The key locates the hub for timing purposes, the bolt secures the hub axially, and the taper secures the hub in place. Any wear in any of the components renders the assembly at risk if failure. PS, don't forget the o-ring.
The Cap'n |
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Posts in this topic
Jesco Reient Sheared key in fan hub. Oct 7 2012, 10:00 PM
timothy_nd28 Man, I would love to see a picture of this! Oct 7 2012, 10:06 PM infraredcalvin Are you taking about the woodruff key insert on th... Oct 7 2012, 10:25 PM rnellums I had this happen to me during a road trip. basic... Oct 8 2012, 09:13 AM
reharvey
I had this happen to me during a road trip. basi... Oct 8 2012, 04:27 PM Jesco Reient Mine was not that badly galled, it was a clean she... Oct 8 2012, 11:01 AM Cap'n Krusty The o'ring goes behind the hub when you instal... Oct 8 2012, 11:10 AM Jesco Reient
The o'ring goes behind the hub when you insta... Oct 8 2012, 04:05 PM wndsrfr
. any Ideas on cause?
As to the cause:
Mine had... Oct 8 2012, 06:08 PM Jesco Reient So for everyones information the key fit nicely, t... Oct 9 2012, 09:12 AM |
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