 Flywheel needle bearing placement, Exact depth of needle bearing location |
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| pgollender |
 Mar 5 2016, 09:47 AM
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#1
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Member  Group: Members Posts: 193 Joined: 5-July 11 From: Sacramento Member No.: 13,281 Region Association: Northern California  |
1970 914 1.7 L:
When replacing the Flywheel needle rolling bearing what is the preferred depth ? There is a felt washer that gets sandwiched between the race of the needle bearing and the locking washer.  Should the race be flush with the out side of the flywheel so the felt washer gets smashed or do you recess the race 1-2 mm in to accommodate the washer so it doesn't get distorted ?  .Also the needle bearing two race surfaces are slightly different. One side is "fatter" the other side is more narrow. Does the race direction matter ? |
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| falcor75 |
Mar 5 2016, 11:30 AM
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#2
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Senior Member Group: Members Posts: 1,579 Joined: 22-November 12 From: Sweden Member No.: 15,176 Region Association: Scandinavia 
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 From the workshop manual. |
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| pgollender |
Mar 5 2016, 11:46 AM
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#3
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Member Group: Members Posts: 193 Joined: 5-July 11 From: Sacramento Member No.: 13,281 Region Association: Northern California |
Thanks Mat: Any input about the race surface direction ?
Here is the other side of the race currently pressed on the inside of the flywheel.  |
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| Mark Henry |
Mar 5 2016, 11:50 AM
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#4
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that's what I do! Group: Members Posts: 20,065 Joined: 27-December 02 From: Port Hope, Ontario Member No.: 26 Region Association: Canada |
QUOTE(pgollender @ Mar 5 2016, 10:47 AM)  Also the needle bearing two race surfaces are slightly different. One side is "fatter" the other side is more narrow. Does the race direction matter ? Yes, the 'narrow' side faces out. |
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| pgollender |
Mar 5 2016, 11:58 AM
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#5
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Member Group: Members Posts: 193 Joined: 5-July 11 From: Sacramento Member No.: 13,281 Region Association: Northern California |
Yo !
Mark and Mats. Thanks[size=7]. Flywheel, clutch plate, pressure plate and Tranny back on in 30 minutes from now !!!! |
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| rudedude |
Mar 6 2016, 09:52 AM
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#6
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Senior Member Group: Members Posts: 510 Joined: 1-January 05 From: minneapolis, mn Member No.: 3,387 Region Association: Upper MidWest
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How necessary is the felt washer?
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| rgalla9146 |
Mar 6 2016, 10:33 AM
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#7
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Advanced Member Group: Members Posts: 4,560 Joined: 23-November 05 From: Paramus NJ Member No.: 5,176 Region Association: None
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QUOTE(rudedude @ Mar 6 2016, 10:52 AM) How necessary is the felt washer? Not to be too rude but.... It's not for decoration. |
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| Mark Henry |
Mar 6 2016, 02:24 PM
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#8
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that's what I do! Group: Members Posts: 20,065 Joined: 27-December 02 From: Port Hope, Ontario Member No.: 26 Region Association: Canada |
QUOTE(rgalla9146 @ Mar 6 2016, 11:33 AM) QUOTE(rudedude @ Mar 6 2016, 10:52 AM) How necessary is the felt washer? Not to be too rude but.... It's not for decoration. The thing is the engine runs hot enough that the grease on the pilot bearing can melt, so without the felt fasher it can leak past and contaminate your clutch disc. The needle bearing should have grease packed into it and then a thin layer of a quality hi-heat grease on the surface. Like wheel bearings you do not fill the whole space with grease. Also note the OP does have a new flywheel Oring installed, forgetting to do this is a common rookie mistake when replacing the main seal. The Oring has a graphite coating do not clean this off before installation. Also put a hair of grease on the main seal surface so the seal doesn't burn on start-up. |
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