Loctite for sprockets

[Jay GTI]

Had planned to replace the sprockets and chain on my bike tonight, ready for the weekend, but I've forgotten to check the manual for the appropriate Loctite (s) needed for the Kato and I want to grab it at lunchtime. Random web searching has turned up 243 for the rear sprocket and 2440 for the front, but not sure if this is correct.

Does anyone have easy access to a Kato manual or confirm what I should be buying?

First person to answer gets photos of me naked except for a pair of Tech3s... :sick:

[jaffaonajappa]

First person to answer gets photos of me naked except for a pair of Tech3s... :sick:

Mate. Use the loctite elsewhere......your sprockets seem the least of your worries :)

[ktm84mxc]

I'd just go 4 243 on the rear & doesn't the front just use a circlip ?

[Jay GTI]

Mate. Use the loctite elsewhere......your sprockets seem the least of your worries :)

Hmmm, my girlfriend says similar stuff too...;)


I'd just go 4 243 on the rear & doesn't the front just use a circlip ?

Cheers!

No circlip on the front sprocket though, I did look at the manual last night and... forgot to actually pay enough attention be able to remember the recommended loctite.

[jaffaonajappa]

Hmmm, my girlfriend says similar stuff too...;)



Yeah. she told me.... :P

[Jay GTI]

Yeah. she told me.... :P

I do feel sorry for her, having to put up with me...:brick:

Sorted, found the manual online, it's 2701 I need for front and back sprockets. So I get to keep the photos to myself (probably best...).

[noobi]

Whatever loctite/threadlock is on the shelf at the time.

[Jay GTI]

Whatever loctite/threadlock is on the shelf at the time.

Yeah gave up trying to get the 2701 at lunchtime (it's either discontinued or some funny Euro variant) and just grabbed some 243 instead.

I have had rear sprocket bolts come loose even with 243 loctite before. Chewed the crap out of the swingarm, but I think that was because I was using a feeler gauge instead of a torque wrench (i.e. "that feels about right").

[flyingcr250]

nothing wrong withe the feeler guage or the eyecrometer, on a side note has your dealer rang you about a recall??

[Buddy L]

Ive had problems with loctite with rear sprockets, even with spring washers installed, they were still vibrating lose.
But once i went to their "stud lock" product, never a problem again.

[CRF119]

Its funny how every body is saying loctite the rear sproket on. My problem is getting the dam thing undone after 50 hours of riding. I guess it depends on the sproket and bolts used. Took me a good 30-40 min to get my last sproket off. Counter sunk allen head bolts and really good nyloc nuts.

[Mental Trousers]

I use Nylocks with a ordinary old thread lock for the rear (5 bolt) and the super-mega-whammy stud locker stuff on the front (single 27mm nut) with a lock washer over top, anything less and the nut works loose (haven't lost it yet but that's more luck than anything).

The front sprocket gets a crap load of torque applied to it whereas the rear tends to be more vibration.

I realize that you're on a dirt bike and I'm on a multicylinder race bike, but it's the same situation regarding securing sprockets.

[Jay GTI]

nothing wrong withe the feeler guage or the eyecrometer, on a side note has your dealer rang you about a recall??

True, but my feeler gauge has quite a lot of inbuilt variance.

Um no, what now???

[noobi]

For the last few sprockets iv done, iv put loctite/threadlock on the countersink in the sprocket to lock the bolt into the sprocket to minimise the possibility of the bolt spinning. Touch wood they havent loosened yet, and I only use the 'its tight enough Nm of torque approach' :drinkup:

[barty5]

funny never used loctite on sprocket bolts and never had one come loose (touch wood) cause now ive said it ill wait for it to happen next ride.

[flyingcr250]

True, but my feeler gauge has quite a lot of inbuilt variance.

Um no, what now???

some bearing in the motor, my bikeshop rang me on friday, the have to split the cases to replace the bearing, i think its only certain engine numbers

[Jay GTI]

Ah cool, will give them a call tomorrow and check.

[noobi]

Problems with bearing 0625204280, which was installed in 350 SX-F engines up to serial number 1-772*05994*, can lead to bearing failure or even to extensive engine damage. For this reason, KTM decided to promote exchanging of the bearing in the markets with another bearing that meets higher bearing material quality standards. The new bearing 0625160040, together with the required washers, gaskets and restrictor, is contained in the main shaft bearing conversion kit 772 33 099 100.

[Jay GTI]

Awesome, cheers for the info Noobi!

[theblacksmith]

funny never used loctite on sprocket bolts and never had one come loose (touch wood) cause now ive said it ill wait for it to happen next ride.

Me neither. Spokes yes-sprockets no.

[Jay GTI]

some bearing in the motor, my bikeshop rang me on friday, the have to split the cases to replace the bearing, i think its only certain engine numbers


Yeah my bike is in the recall as well, the dealer was waiting for the kits to arrive before bringing the bikes in. Been told it's not a full recall, so should be ok to ride while I'm waiting, but will probably leave it in the garage anyway. The linkages and swingarm needs another strip-down and re-grease anyway, will use the time not riding to give it a good onceover.

[Rupe]

some bearing in the motor, my bikeshop rang me on friday, the have to split the cases to replace the bearing, i think its only certain engine numbers

what about piston/rings? They do that for free?