| Author | Message | ||
     Jhanz |
I've had and seen many questions on BadWeb regarding the diagnosing of problem sounds relating to the Primary on the XB's. but, what should a normal primary sound like and what are some telltale signs of the primary being misadjusted? I recently adjusted the clutch and checked the primary tension. The tension seemed to be in spec, however, I don't have a stand so I did not check from the tightest spot. There seems to be a knocking that gets less noticeable once the bike warms up, would that be due to a loose primary? | ||
| Brianb |
I got my XB12Ss out of the shop today. I put in Sat for a clacking coming from the left front chin area that developed over approx 100 miles and got progressively worse. Definitely not valvetrain. Turns out the eng sprocket nut was loose. At idle or steady speed the noise was loud. When under acceleration it would be quiet. I checked tension and it was fine. If the noise gets louder, get it into service. No damage was noted and all under warranty. | ||
| Dave |
Good find. I hope the servicing dealership knows about the updated torque spec. DAve | ||
| Blake |
Jhanz, Sorry for the late reply. Yes, you may have a loose primary. You may also have a loose nut like BrianB describes. The primary drive should not make any noticeable noise, definitely no knocking or clanking noises. | ||
| Retribution |
Didn`t want to start a topic just for this: could someone tell me the lenght (in mm) of the primary sprocket locking tool? I'm making one myself. I`m nowhere near a dealer who carries that and I`m about to replace the stator because of wire varnish failure (bike has only 1K miles, stator and gaskets will be sent/replaced under warranty). Thanks a lot. | ||
| Reepicheep |
I just started long and kept cutting it down until it started working right. I don't think it has to be very precise. I don't know if you have already "reached an arrangement", but it would be extremely unusual for a dealer to let you do the work and then honor the warranty. That's not to say you should not be just fixing it yourself. I've fixed things myself because buying and doing my own repairs were less grief then getting the warranty executed. Just a heads up that if you have not already reached an agreement with a dealer they probably won't help you if you walk in the door with removed (and clearly failed) part in hand. Not a big deal. If you are far away from a dealer it makes a lot more sense to just buy the parts and fix the thing rather then make multiple trips back and forth. Less time and money to just fix it out of pocket. | ||
| Tx05xb12s |
American Sport Bike sells a primary sprocket locker tool, but you can make yourself one out of aluminum flat or angle bar. It needs to be 4 1/4" long. I made mine out of a piece of 1/8" x 1" aluminum angle bar. 1/4" x 2" flat bar would be ideal. This is just what I had on hand to work with. I recently had to tighten mine for the second time. The first time I took it to the stealership and let them bust my clutch cable housing and scratch the primary cover for me, and then try to dump it in my garage and drive off before I noticed. This time I did it myself. I noticed that the back of the nut was not in full contact with the shaft all the way around, so I sanded it down flat on a sheet of 80 grit sand paper, used red locktite liberally, and torqued it down somewhere in the neighborhood of 260 ft. lbs. This solved 90% of my rattling noise, but when traveling 70 MPH or so, if I accelerate hard it rattles still. I'm wondering if riding it through the nut coming loose twice has caused a little runout in the sprocket or something? The chain is adjusted to the minimum (3/8" cold) according to my calipers. What else could it be? I can't actually tell where the noise is coming from. I just assume it's still the primary. Anyone having noise issues from the rusty secondary drive or the tensioner? I would almost swear it sounds like it's coming from the right side of the bike. The problem is there's so much wind noise at that speed I can't really tell. The bike's under warranty, but I just can't bring myself to go back for more abuse at the stealership until I have exhausted all other remedies. | ||
| Retribution |
Reepicheep, I've indeed come to an agreement with the dealership and they will honor the warranty. They know I live in another state and I told them that I can do the job, I've got the service manual and the badweather forum on my side.  Tx05, thanks for the measurings, that'll give me a head start since I can now fabricate the tool in advance. It would help a bit if those measures were in mm, although I can google for an online conversion tool... One more question: what socket sizes will I need for the sprocket and clutch assy nuts? I reckon they're a 1-1/8 and a 1-3/16, is that correct? ('06 XB9SX) I want to make sure I have the right set of tools beforehand. (There's all sorts of T27 wrenches laying around the table waiting for the stator to arrive  ). (Message edited by Retribution on January 12, 2007) | ||
| Justin_case |
Tx05,Rattling under hard accelleration at 70? Sounds like pinging to me. Anyone adjust their primary chain while idling? Loosen it till it rattles, tighten till it whines, back off till its quiet. No worries about tight spots or measurements. Try it, you can always measure it when you're done if you're skeptical. | ||
| Henrik |
I tend to adjust my primary chain on the loose side - and do make sure to find the tightest spot and measure there. 1" = 25.4mm Henrik |
