RE: Thrust on crank worn again...

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RE: Thrust on crank worn again...

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RE: Thrust on crank worn again... - 8/19/2008 10:24:01 PM

SwedishGP

Posts: 801
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yeah i was also thinking maybe the tollerances in the crank are shot out to far? Hmm just is odd that bearing could be short lived like that. Either its poor installation or the crank is beyond its usage like Jrailer said...

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Post #: 11

RE: Thrust on crank worn again... - 8/20/2008 12:04:00 AM

pungieEC

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Joined: 8/18/2008
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Thanks every one for replying. The torque values on the caps I got from the dealers as follow: 75 newton metre on the mains and 40 newton metre on the big end bearings. As for the seals, I always replace them when working in the area of the crank and bearings, saving me future work on leaking seals.

The crank was previously on standard size, but when it worn off, the engineering place sugested to take it to the next size. So they machined it to 010 with an over size thrust. On the other hand when I fit these parts I take extreme caution not to make any damage.

The linkages I did check it is fine. See, it is only the reverse gear and 1st gear that is impossible to push when the engine is running and vehicle is at complete stand still. The other gears move bit difficult but they work though.

I know that replacing the clutch components wont help the loose crank from sliding. See what I did here was the previous time is I got another crank and new bearings. Some one suggested then replacing the clutch components would prevent the bearings wearing off again. He said if the clutch components is worn, it is a matter of time before the new bearings and crank start wearing again. Is this possible?

Can you explain where the throw out bearing is? Is it part of the gearbox?

One last thing though. The car is using a self adjusting clutch cable. I have heard that these cables do give problems. It was suggested that I try the old manual adjusting clutch cable.

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Post #: 12

RE: Thrust on crank worn again... - 8/20/2008 8:03:31 AM

SwedishGP

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The throw out bearing is the bearing that sits on the end of the clutch fork (which is actuated by the cable or clutch slave) its slides on the input shaft of the tranny, it presses against the pressure plate everytime you engage the clutch

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Post #: 13

RE: Thrust on crank worn again... - 8/20/2008 10:30:40 AM

pungieEC

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Joined: 8/18/2008
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Hi there.

Just want to figure out what you explained. It sounds to me that you are talking about the push rod. I don''t know if things differ from country to country. On my gearbox it has the fork. The fork then presses on the release bearing and this again on the push rod which presses the presure plate. The push rod runs within the main shaft fixed with what they call a spricket bush. Do I have it right?

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Post #: 14

RE: Thrust on crank worn again... - 8/20/2008 2:14:04 PM

pungieEC

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Joined: 8/18/2008
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I got a good used crank today. It is standard size, so no machining required. Got the new bearings as well. Lets see what it does. I got another clutch cable as well, but it is the manual adjusting cable. Lets see if it lasts this time. Will keep updated.

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Post #: 15

RE: Thrust on crank worn again... - 8/20/2008 6:56:07 PM

Jrailer

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Joined: 12/8/2007
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the throw out bearing and the release bearing are the same thing if that is what you are geting at

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Post #: 16

RE: Thrust on crank worn again... - 8/20/2008 8:22:46 PM

bagel

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Joined: 8/16/2005
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So wait....I''m getting lost in translation. What does the crank have to do with shifting??

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RE: Thrust on crank worn again... - 8/20/2008 8:42:57 PM

Jrailer

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Joined: 12/8/2007
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if the thrust is worn out when you push the clutch it moves the crank so you end up with the clutch and flywheel moving away from the throw out bearing and making it act like a loose cable

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Post #: 18

RE: Thrust on crank worn again... - 8/21/2008 2:02:14 AM

pungieEC

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Joined: 8/18/2008
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Thanks Jrailer. That was what I was trying to explain. But what I wanted to figure out is what can cause the thrust to get worn out and what can I do to prevent it again. Surely I don''t wan''t to put me in that pain again of removing the transmission and engine again. Any sugestions?

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Post #: 19

RE: Thrust on crank worn again... - 8/21/2008 2:08:08 AM

pungieEC

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Joined: 8/18/2008
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Sorry if I had to ask about what the throw out bearing. Termanology seems to differ from country to country.

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Post #: 20