cam chain stuck

[Anonymous]

imin the process of trying to replace the cam chain on my bike i have lossened the tensinor and broke the chain but it is still stuck . what did i do wrong. thanks

[Flatline_Racing]

try rotating the crank as you pull it out

[Anonymous]

cam chain

this is really stupid but how do i do that thanks

[bwringer]

Remove the points/ignition cover on the right side of the engine (three smallish screws.

Use the large hex (19mm) on the end of the crankshaft to rotate the engine. Normally, rotation is clockwise only, but since the cam chain is already toast, it doesn't matter too much at this point.

You are definitely going to need a manual to get everything back together and timed correctly.

http://repairmanuals.com

[Anonymous]

Be careful not to damage the valves turning the crank. The cams should be removed when doing this (I think, never done it before...)

Steve

[Billy Ricks]

I don't think I'd rotate the crank. You have valves open that are going to stay open with the cams not turning. You will end up with damaged valves next if you turn the crank. Pull the cams before you turn the crank.

[bwringer]

Good point -- you'll damage any open valves if you force the crank to turn with the camshafts in. I kinda assumed you would hear the muffled clank of the pistons striking the valves and stop turning at some point.

You can remove just the camshafts if you don't feel like removing the whole cylinder head just yet.

[Anonymous]

cam chain

how hard is it to remove the cams and how hard is it to set the timming after wards

[Big Jay]

If you are talking about a four cylinder, those cam chains are "endless" type. You should not try and use a "put together" chain. You could risk serious engine damage.

jay

[Anonymous]

Timing is pretty easy, you put the crank so it's pointing at a mark (I don't recall which) and then put the cams so that the notches on the "passenger" side are both on the inside. The marks on the cam sprockets will be facing parallel with the head and perpendicular. You count the number of links between the to upward facing marks...as I said really easy if you have the manual.

Steve

[Billy Ricks]

What model bike do you have?