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/cgi-bin/YaBB.pl General Category >> Rubber Side Down! >> Please help: Torque cylinderhead cover bolts /cgi-bin/YaBB.pl?num=1367165783 Message started by RobSchneider on 04/28/13 at 09:16:23 |
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Title: Please help: Torque cylinderhead cover bolts Post by RobSchneider on 04/28/13 at 09:16:23 Had just replaced an properly sealed the infamous cap (because of oil-leaking). But now the problem is the torque of the bolts, the servicemanual refers to a table, but I can't figure anything out, there are bolts with a '7', but also '10' , 'C', 'b', '6'... I have the image from the topic which you can print out, glue on a box and push your bolts in, those bolts I don't knoe the torque, someone can help me??? |
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Title: Re: Please help: Torque cylinderhead cover bolts Post by Dave on 04/28/13 at 09:44:08 The manual says 6-8.5 foot pounds. They are small bolts....and don't take a lot of force.....so be careful not to overtighen them. If you strip the aluminum threads.....the repair is not easy. |
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Title: Re: Please help: Torque cylinderhead cover bolts Post by RobSchneider on 04/28/13 at 09:46:07 467D7067767A61677C747966150 wrote:
Thank you Dave, but is that torque for all the bolts? |
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Title: Re: Please help: Torque cylinderhead cover bolts Post by Dave on 04/28/13 at 10:09:42 Yes. They are all 6mm bolts. Torque is dependant on size....not on length. |
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Title: Re: Please help: Torque cylinderhead cover bolts Post by Serowbot on 04/28/13 at 10:18:40 Yup,.. most important thing with any bolts that are compressing a gasket or sealant, is that they all get tightened evenly... and tighten them in a crisscross, star pattern sequence, to compress evenly... I never use a torque wrench, except on head bolts and internal parts,.. I just go by feel, but the evenness and star pattern sequence is most important... JMHO... "When in doubt, don't strip 'em out"... (I just made that up)... ;D ;D ;D... |
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Title: Re: Please help: Torque cylinderhead cover bolts Post by RobSchneider on 04/28/13 at 10:36:23 Thanks guys, you just made my day!!! |
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Title: Re: Please help: Torque cylinderhead cover bolts Post by wambr on 04/28/13 at 10:44:32 +1 I usually guided by the principle of tightening the screws criss-cross . and cuttin "feel". no need to pull these bolts very much...just "to the slight resistance".. |
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Title: Re: Please help: Torque cylinderhead cover bolts Post by justin_o_guy2 on 04/28/13 at 11:54:08 Caution here is the #1 priority. A repair up there is a pain. Better to work thru the torque pattern 10 times & gently draw that head cover down evenly than get in a hurry & be takin it off & pullin the motor to get a drill aimed down into the messed up area. |
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Title: Re: Please help: Torque cylinderhead cover bolts Post by Digger on 04/28/13 at 18:52:29 When installing the cylinder head cover, the FSM says to tighten the cylinder head bolts "diagonally." Clymers says the same thing, but adds to tighten the bolts in the middle of the cylinder head cover first. With this vague guidance in mind, here is the bolt tightening order I've arrived at after removing and installing the cylinder head cover a few times (loosening order (e.g. when removing the cylinder head) will be the reverse of the tightening order): http://i235.photobucket.com/albums/ee201/Digger109/LS650/HeadCoverBoltTorqueOrder-4E.jpg My methodology was to start with the inner-most bolts and move diagonally as much as possible. This is just the pattern I have been using. Your way most likely will be better, please share if so. I torque these bolts using a 0-200 in-lb beam torque wrench in three stages (snug, half-torque, full-torque). Note that the bolt associated with position #12 in the above picture represents a special challenge. This is because said bolt is also used to secure the port decorative chrome head cover. However, with that cover in place, some of the other head cover bolts would be hard to access. However, if you don't mind going through a little extra trouble, you can still torque the head cover in a complete fashion - to include bolt #12. Here is what I used to take the place of the decorative head cover - a stack of washers: http://i235.photobucket.com/albums/ee201/Digger109/LS650/HeadCoverSpacerE.jpg I just place a bunch of washers on the bolt. This allows me to torque the bolt down properly. After the gasket sealant used on the head cover is cured, I remove the washers and install the left decorative chrome head cover, taking care to re-torque the subject bolt properly. IHTH someone! |
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Title: Re: Please help: Torque cylinderhead cover bolts Post by RobSchneider on 04/29/13 at 01:05:03 Well, turns out that the previous owner had tighten the bolts too tight, two bolts had already ruined the threads, GQ#%YHGWG!!! I'm putting it al back together and hope that it doesn't turn up to be a problem... otherwise there will be a lot more (sh*twork) to do.... BTW Digger, Is there any tension on that spring on your 2nd picture? I don't have any tension on that spring, but guessing it will come when the engine is running? Keep you guys posted! |
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Title: Re: Please help: Torque cylinderhead cover bolts Post by Dave on 04/29/13 at 04:31:23 4A555354494E7F4F7F47555912200 wrote:
When I posted the torque values.....I probably should have mentioned the need to tighten in a diagonal pattern and do it in intervals. It is something I would have done while working on a bike......just forgot to say something in my response. Glad the rest of you are keepting things proper! Dave |
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Title: Re: Please help: Torque cylinderhead cover bolts Post by justin_o_guy2 on 04/29/13 at 05:26:26 keepting things proper is imptortant.. |
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Title: Re: Please help: Torque cylinderhead cover bolts Post by Dave on 04/29/13 at 05:38:49 223D3B3C21261727172F3D317A480 wrote:
Dang......it is hard to see this screen early in the mornng....and even harder to keep my fingers on the right keys! |
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Title: Re: Please help: Torque cylinderhead cover bolts Post by justin_o_guy2 on 04/29/13 at 10:04:53 HGeck man,, I can spell, I just cnat tpye! |
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Title: Re: Please help: Torque cylinderhead cover bolts Post by Digger on 04/29/13 at 20:52:03 7A474A7B4B40464D414C4D5A280 wrote:
Can't remember.... I DO remember, however, that the camshaft needs to be in a certain position when removing and replacing the head cover. |
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Title: Re: Please help: Torque cylinderhead cover bolts Post by verslagen1 on 04/29/13 at 20:58:20 634E40404255270 wrote:
Can't remember.... I DO remember, however, that the camshaft needs to be in a certain position when removing and replacing the head cover. [/quote] should be some tension on the decomp spring head cover should be installed with crank at TDC. |
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Title: Re: Please help: Torque cylinderhead cover bolts Post by RobSchneider on 04/29/13 at 22:59:15 Quote:
I removed the steel wire from the spring, and know the position of the tensionscrews so I guess it will be alright then if I place it back exactly? Does someone know the function of the screw above no.4 in this picture? Its thread is broken inside, and I'm thinking to make a new thread and put a bigger screw in to seal it up... darn this sucks... |
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Title: Re: Please help: Torque cylinderhead cover bolts Post by Dave on 04/30/13 at 04:52:47 The screw above No. 4 is the retainer screw for the shaft the rocker arm pivots on. You can take that shaft out to repair it....or just get a new one. |
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