Chain tensioner bolt stuck

[ILMV]

Hello all,

Went to adjust the chain this evening and have discovered that the RHS chain tensioner bold (#3 in the image) is stuck... with lots of force it will move, but it takes so much force that I fear I'm going to snap the bolt off, and when it does move, it's only a fraction of a turn and it makes a bloody great sound doing it.

This needs to be resolved, I could drop the wheel and get a socket on it instead of a spanner... but what do I do, replace the bolt (if it comes off) and use a thread tapping tool (is that the right thing?) to clear out the thread?

If I do drop the wheel I might have a bit of space behind the plate to heat up the thread, but I'm cautious about this because of the paint around the area.


Cheers!
Ben

 

[rce]

I know this is a daft question and you can tell me to feck off.. you have loosened the axle and the locknut on the adjuster ?

 

[Sooty09]

My tensioner bolts get stiff so I fully remove them every tyre change (about twice a year) and apply a bit of copper slip to the bolt and lock nut.
Back off the locknuts and apply penetrating oil to the bolts. After a day or so remove the axle and clamp so you can fit a socket and long handled ratchet to the bolt head. Apply a bit of copper slip to the threads and wind it fully in.
Then reverse the ratchet and wind them out, if it sticks apply a bit more copper slip and wind it back in a bit before re-trying.

 

[ILMV]

@rce Yes I've moved the wheel back

@Sooty I'll give that a go, and particular penetrating oil?