Hello

How often should I replace the timing chain on my Healey? I've currently got the timing chain cover off to replace the front oil seal and the tensioner was also shot so have replaced that too. Am thinking I should also replace the timing chain although right now I am unable to remove the nut from the end of the camshaft so I am thinking about leaving it on.

Thanks for your help.

Myles

How old and how many miles? Either way, you're so close I'd advise you to go the rest of the way.

Hello mylesw.

Good to see your still persevering at this.

Cutlass has the right idea, you're there now do it and save a heartache later.

The camshaft nut should come off with a socket (sorry I don't remember what size it was, but I think Dave Russell had it in one of his replies earlier) preferably 1/2" drive and a breaker bar at least 15" long and a good size hammer and a chisel.

A breaker bar is preferred to a ratchet handle as you could damage the ratcheting mechanism.

Get at it from the top and with the hammer and chisel knock back the "tab" on the washer that is there to lock the nut in place.

With the socket and breaker bar in place give the handle of the breaker bar a seroius hit near the end of the bar (for best results).

You will most likely need a new washer to go under the nut when you put it back together.

If you have the car in gear and someone with their foot on the brake pedal that may help.

There have been times when I have used the chisel directly onto the nut and then replaced the nut so that is a choice also.

The nut is a "regular" nut meaning it will undo the "normal" way, no surprises there.

Good luck.

bundyrum.