Timing gear replacement

[Hat]

I have the alloy set, and is very quiet.

[paul staines]

I had the steel set from Brookhouse. Was very noisy at first. Not now !. Do not regret fitting it. Regards Paul.

[Derek UK]

The bend to lock washer for the bronze plate has been replaced in the kit by screws which come with some Loctite stuff already on the threads. Being as this change is after all of the manuals has anyone any idea as to the torque setting for these now? 35-40ft/lbs? I posted 85ft/lbs with thread locker for the cam nut but see in my notes 75ft/lbs with blue Loctite 243. Which is correct?

I'm going with the fibre gears, maybe just the big gear will get changed and you can't do that with metal gears as they have to be changed as a pair.

[Ron Kwas]

Derek;

I'd look up torque range for a 1/4-20 Grade 8 bolt to confirm, but 35-45 ft/lbs sounds about right...if depending on Loktite, assure hole is clean and dry before installation...but you knew that!

There's nothing wrong with replacing only fibre gear if metal gear has not been damaged...

Having had a Camnut back off because of sloppy Cam threads (on a brand new Turbo motor we built...talk about one's heart sinking into ones shorts a few minutes after first Start, hearing a similar but intermittent noise of Camnut papping into back side of Timing Cover...), I now drill and safety wire Cam nuts, but Loktite would certainly also do the trick here. For tightening Torque, my InterEurope Manual for the 120/1800 as well as also 140 specifies 94-108Ft/Lbs.

Cheers

[Derek UK]

The 94-108 figure was reduced by Volvo as they had a spate of broken off cam noses. I haven't looked it up but I believe they put out a Workshop bulletin giving the lower figure + Loctite. Was asking if the number was 75 or 85ft/lbs.

[Ron Kwas]

Derek;

I realize what you asked, but the first thing I would normally do is consult the books, so that's what I did...thanks for making me aware that this was indeed changed by Bulletin!...as far as 75 or 85Ft/Lbs, if I wasn't certain, I'd make it 80...what does Bulletin call for?

Cheers

[Derek UK]

I can't find a bulletin about it on 1800/Amazon pictures. A lot of those came from the folder I have. Someone like Mike Dudek might know if it is actually in print.

EDIT - From Scandix catalogue.

"Volvo once gave a tightening torque for the camshaft nut of 13 - 15 kpm (94-108 ft/lbs). When installing, the threaded end could be stripped. A maximum torque of 80nm (59ft/lbs) should not be exceeded. For additional security, Loctite should be used."

Looks like I got the 80 right but wrong measurement. Let's just say 60ft/lbs + Blue Loctite.

[Amazonjulian]

36 mm socket available here too if needed. Good luck with it Derek

[Ron Kwas]

Derek;

Thanks for locating supporting info...I will annotate my manuals to that effect!

Cheese

[Derek UK]

Cam nut is actually 1 7/16". My metric socket rail goes up to 34 I find, but will look out for one or the other at Enfield this weekend. 36mm only £7-8 posted on eBay anyway. Here's me buying things and than maybe having it done in the garage. The engine guy is back from hols next Tuesday so will be in for a chat. He may not be too keen.............. Gear kit arrived from Simon this morning along with a sump gasket. Will also buy a sheet of gasket paper (thick) to make up a bridge piece for the bottom of the timing case to save cutting the expensive full one if it isn't needed.

1.417 36mm
1.418 1 7/16 AF

Close enough.