MOTOBRICK.COM
TECHNICAL MOTOBRICK WRENCHING In Remembrance of Inge K. => The Motobrick Workshop => Topic started by: Lbxpdx on October 08, 2023, 03:45:55 PM
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I was going over my paperwork from my new to me 92 K75rt that I bought a few months ago. The original owner got hosed as he had a new clutch installed and 500 miles and a year later he needed another new clutch. Two different dealers. What I don’t see if a new throw out bearing in the receipts, unless it is included in the clutch kit from the first dealer. Is it normal to keep the old throw out bearing when doing all the other bits around it?
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bearing should have been in the clutch kit on the first service, it was probably still good when the disc got contaminated and replaced in the second service.
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Old-style throw-out bearings are multi-piece assemblies. If the bearings and races are undamaged, they might just get greased and reinstalled. If they are questionable, they usually get replaced by the sealed, one-piece unit. At Max, a clutch pack comprised of diaphragm spring, pressure plate, clutch plate, housing cover and assorted screws, washers, compression ring and o-ring runs ≈$550.00 in today's dollars. A new-style one-piece clutch piston/bearing runs ≈$116.00 in today's dollars, so it seems judging from the price back then, they just greased an old-style bearing and race setup that was in good condition, but needed to replace its cup (piston). it should work ok, if that's what happened. Possibly, the new-style wasn't available.
(https://www.motobrick.com/gallery/4/1601-081023181422.png)
(https://www.motobrick.com/gallery/4/1601-081023181309.png)
(https://www.motobrick.com/gallery/4/1601-081023181906.png)
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The throwout bearing is not "greased" with anything. It is lubricated by the gear oil in the transmission.
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The throwout bearing is not "greased" with anything. It is lubricated by the gear oil in the transmission.
"Greased" was being used in its cleansing rather than its lubricative sense—a peculiar and idiomatic usage, certainly—but yours is an incisive observation nonetheless and devoted readership is always gratifying. icon_cheers
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If I might offer a note of appreciation for the tireless moderation as offered by @Laitch - an esoteric blend of high tech with superb grammar inserts resulting in a "multitask" experience on each site visit.
I trust these comments might be taken in a cleansing manner.
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To summarize, it's generally good practice to lubricate naked bearings when installing them; things happen despite your best intentions. :laughing1: (https://www.motobrick.com/gallery/4/1601-111023163632.png)
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If you want to reduce wear on your throwout bearing, do not idle for long times engaged in a gear. When I come up to a stop light i put trans in neutral and leave clutch up. This means that throw out bearing is not engaged. When the light changes I pull clutch down and pop in gear and take off. I do this instinctively with all my vehicles with standard trans.
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I keep my Brick in first gear when idling so I can quickly move out of trouble's way when necessary. Throw-out bearing wear isn't a consideration. This one has gone 90,000 miles. Maybe the early multi-piece bearings were problematic.
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I was going over my paperwork from my new to me 92 K75rt that I bought a few months ago. The original owner got hosed as he had a new clutch installed and 500 miles and a year later he needed another new clutch. Two different dealers. What I don’t see if a new throw out bearing in the receipts, unless it is included in the clutch kit from the first dealer. Is it normal to keep the old throw out bearing when doing all the other bits around it?
Holy shit 21 hours of labour??!! I'm not a mechanic, and I replaced my clutch faster than that, including beer breaks and time spent scratching my head.
so . . . "hosed" may well apply here for multiple reasons. Which cause me to laugh when I read "HOSING DID NOT INSTALL" whatever that might mean.
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. . . I read "HOSING DID NOT INSTALL" whatever that might mean.
It means hosing is a function separate from Installation. Installation is done by service technicians. Hosing is done by service managers. :laughing4-giggles: