Decided to tackle the cam bearing upgrade today. After reading through a previous post by TJ on the matter I thought it seems like an easy enough job for the piece of mind.
First thing first for anyone that wants to do this.
Skills needed I would class as moderate. 2/5
Bearings needed are: 2x 6205-c3
Tools needed are:
1 permanent marker.
1 breaker bar.
1 torque wrench.
5mm Allen key.
1 bare electrical blade terminal.
1 very clean rag.
Short length of rope.
To begin with read the manual on how to set the cylinders to top dead centre. Remove both cam covers.
Decide on which cylinder to do first and set it to TDC. I chose the rear.
Start by putting the rag under the cam gear to avoid anything dropping into the cylinder cases.
Wipe oil off the cam chain and use the marker to mark the chain link that lines up with TDC on the gear.
Then put the bike in 5th and push down hard on the rear brake.
Remove the cam gear bolt using a 17mm socket.
Then use the 5mm Allen key to remove the bolts for the cam chain tensioner and remove the tensioner.
Next remove the cam gear and use the rope to tie the chain up to avoid it dropping into the engine.
Then use the 12mm socket to remove the came bearing retainer.
Once the retainer is remove use the bearing puller, or a plate with a hole in it, across the face of the cam cover and remove the cam and plain bearing.
Once removed swap the plain bearing out for the 6205-c3 bearing.
Give both surfaces of the bearing a good wipe with oil and reinstall the cam with the pin facing towards the timing mark.
After that reinstall the bearing retainer and set torque to the correct figure as per the manual. Loosely install the cam gear onto cam ensuring the cam gear is aligned with the pre-marked chain link. This will make sure the timing is still correct.
The reset the preload of the tensioner by winding the screw at the head while pushing the tensioner in. You will need to slot the blade terminal in once you have reset the tension to prevent it from moving.
Reinstall the tensioner and remove the blade terminal to set tension.
Follow the same instructions for the other side.
Rotate the engine over a few times using the same socket to set the timing to ensure that there is no contact between the valves and the pistons.
Reinstall the cam covers and job done.