Torque setting for rocker arm bolt?

[Highwaylass]

Can anyone advise me of the torque setting for the rocker arm bolt, the one with the special shaped head?

I can't find it listed in Haynes or in the Citroen workshop manual.

[Ken Hanna]

Highwaylass,
I use the same torque as for the cylinder head stud nuts, 'around' 17 ft. lbs.

However, the best plan with those items is to file them in the bin and replace them with M8 x 1.25 Allen screws, 35mm long, then you can use an Allen key for undoing and tightening them.
Best to use BZP or self-colour screws, as I've found a set stainless ones which someone had over-tightened had galled in the threads of the head...

http://offer.ebay.co.uk/ws/eBayISAPI.dl ... quantity=1
& maybe also?
http://www.ebay.co.uk/itm/Newsome-1-2-D ... 3a95ad782a

Although tbh, using a normal Allen key should work just fine, since their torque is not as critical as that for the stud nuts.

Ken

Can anyone advise me of the torque setting for the rocker arm bolt, the one with the special shaped head?

I can't find it listed in Haynes or in the Citroen workshop manual.

[Highwaylass]

Thanks, Ken!

I bought the Special Tool so I will keep them for now.

I am nervously checking my push-rod tubes to make sure I haven't crushed them!

[Geoff Ryall-Harvey]

If you took the pushrods out then there's much less chance of crushing the tubes. It's a bit of a faff to take them out when you remove the head but if the bolts have been replaced as Ken suggests then it's much easier and well worth doing as even experienced people can have a mishap - takes only a few seconds of inattention.

[Mendip.Wursel]

Thanks, Ken!

I bought the Special Tool so I will keep them for now.

I am nervously checking my push-rod tubes to make sure I haven't crushed them!

I have bent the ends of push rod tubes in the past and managed to just bend them back by taping a suitable sized bar down the tube and then taping into shape, no problem.

Those Special Tools cost a fortune for what they are...

Cheers

[Highwaylass]

Gutted! Got the heads back together and torqued up and then one of the inlet manifold bolts stripped its thread

[Geoff Ryall-Harvey]

No big deal - whizz it off and get a machine shop to put a thread insert in it. You could probably get away with running an M8 tap into it in situ. That'd cost buttons...

I had a similar problem a while back and this winter I'm going to have both heads off and get the inlet and exhaust studs done with thread inserts.

[Highwaylass]

I don't want to take it off, it took me all day yesterday to get it back on!

A local machine shop does house calls, bloke is going to come and helicoil it on Friday. It's a bit of a bugger as I hoped to get it all rebuilt this week.

[Ken Hanna]

As Geoff has suggested, it's possible to run an M8 tap through any of the four inlet threads in-situ.
You probably wouldn't even have time to make the fellow a cup of tea before the job was done and dusted...

I don't want to take it off, it took me all day yesterday to get it back on!

A local machine shop does house calls, bloke is going to come and helicoil it on Friday. It's a bit of a bugger as I hoped to get it all rebuilt this week.

[Mendip.Wursel]

You can buy oversized studs from ECAS specifically for this job if you didn't want to helicoil