hi my american and international friends wondered if i may pick at your wisdom once more again please :embarrassed:
i could hear a knock coming from the front cam,my timing chain was jumping (i beleive) on the exhaust cam after a little rebuild,i had'nt done up the tacho sleeve screw,so tightened it and yep-snap,grr im a wally.
then pondered the best way to extract the screw,thought insted of using my useless screw extractor i would remove the sleeve body and try vice grips instead or if im lucky my stud remover!
anyway i cant find any reference to removing the sleeve in the Haynes manual (only the tacho cable), so gave it a slight budge with a rubber mallet and piece of wood and it started to move,then had a little go at prying it out of the head with a screwdriver and "snap" again! i have broken the sleeve itself! gave up there and then and come up here for a relaxing whisky (live in a block of flats,sorry appartment) had a look at the diagrams on Alpha sports and as far as i can see from that diagram it looks like it should prise out the head,is that so????
it doesnt show the front-on picture of the tacho sleeve (number 17 in pic below) ,i have snapped the lip on left hand the side of it what the screw goes through.
do i order this replacement part £20 here in England and continue trying to remove the sleeve the way im going about it?
any advise would be so greatfull all :dunno_white:
thankyou,
Ant- happy riding to all
(http://i602.photobucket.com/albums/tt107/gs500ant/CYLINDERHEADDIAGRAM.gif)
(http://i602.photobucket.com/albums/tt107/gs500ant/picofbrokentachosleeve.jpg)
and the offending little screw from a view from front
and area i have snapped off of sleeve,i beleive?
(http://i602.photobucket.com/albums/tt107/gs500ant/picofbrokentachosleevescrewe2.jpg)
im fairly sure that little guy just pulls striaght out... use pliers, put your hammer in the corner for half an hour as punishment.
thanks for the reply/advise Dr.Sparkie
by the looks of the diagram she just pulls out,but i was worried about buggering up the tacho thread inside,hence not trying to yank her out without knowing for sure it just pops out?
p.s no worries about the hammer being left in the corner for half hour,dont think i'l find it again after throwing the offending tool a quarter of a mile down the road!! (thats the hammer not myself!) :cookoo:
Yep. That little o-ring on the outer part of that sleeve is what seals it inside the head. So, if you put a flat blade screwdriver behind the sleeve, and lightly prise against it, working your way around the sleeve, you should be able to get it to come out. The problem will be, that the oring has swollen with the oil and heat. You will need to get a new oring which is flat and you'll need to oil it when you put it back in.
The gear for the tach sits underneath the worms gear segment of the camshaft which turns the tach shaft gear. That also seals inside of the sleeve with another o-ring. Not too terrible to take out if you decide to run a wired tach. Where you are, you may be able to find a plug that is metric which will fit in the end of the new sleeve if you decide to go that route as well.
Good luck, broken bolts have become my forte as of late trying to get mine going. :cheers:
Quote from: cboling on August 05, 2009, 03:16:57 PM
Yep. That little o-ring on the outer part of that sleeve is what seals it inside the head. So, if you put a flat blade screwdriver behind the sleeve, and lightly prise against it, working your way around the sleeve, you should be able to get it to come out. The problem will be, that the oring has swollen with the oil and heat. You will need to get a new oring which is flat and you'll need to oil it when you put it back in.
The gear for the tach sits underneath the worms gear segment of the camshaft which turns the tach shaft gear. That also seals inside of the sleeve with another o-ring. Not too terrible to take out if you decide to run a wired tach. Where you are, you may be able to find a plug that is metric which will fit in the end of the new sleeve if you decide to go that route as well.
Good luck, broken bolts have become my forte as of late trying to get mine going. :cheers:
god bless ya cboling,
so if i understand right part number 19 (diagram above) a oil seal/o-ring is what i have to prise out first, then remove/prise out the sleeve and replace both(as i broke the sleeve,D'oh!)
the other o-ring/seal band,- is that situated inside of the head or put in first from the outer side before the first o-ring you mention buddy?,
by the looks of the diagram all 3,oil seal,sleeve and seal band are all push-in from outside of the head and only the tach gear itslef is situated inside the head,under the exhaust cam?
p.s my friend- if i decide to run a wired tach? is that a referal to a digital one instead,hence i could remove the tach gear under the exhaust cam all together?.
very very much appreciated cboling,and i wish you all the best of luck with yours matey :thumb:
yes you can remove it and replace it with the later model plug.
or you can hook up the electric tacho and leave the stock setup alone
all that happens is the little dohickey just spins(part #16)
been there \done that....for years
thanks for the advise werase643 :thumb:
Actually, part #17 is the whole sleeve. I believe 19 is an inner seal or sleeve for the tach to seal against. (Not sure mine was present.) If you can get the flat blade behind that, then it should come out. The oring (once you get that out) is on the part that is inside the head, on the outside of the sleeve. You will see once you get it out. That little o-ring gave me fits until I ordered a new one.
EDIT: Yep wired / digital would eliminate the need to have the gear. Not sure you would have to remove it but either way, your sleeve would have to be replaced due to the oil seal that it provides. If you did go the digital tach route, you would need to find a plug big enough to fit the end of the sleeve. I think if you search here, you can find a reference to where someone used an exhaust bung plug from a Subaru. I ended up using a 3/8 inch brass plumbing plug with an additional o-ring pressed inside to seal it off. There are only a few threads in the sleeve so there was no danger stripping those threads while using a non-metric threaded piece.
thanks again for your time/advise cboling,might have a go at it at the weekend