Amazon: New (to me) 1963 Volvo 122

[Laird Scooby]

Originally Posted by Othen

I was adjusting the clutch throw this morning and happened to notice the four M8 bolts that hold the gearbox onto the bell housing were all loose. I’d have removed and replaced these when I fixed the overdrive immobiliser a year or so ago. I didn’t use any thread lock when I re-fitted the bolts, and wonder whether I should have done? I can’t find any mention of using thread lock in the green book - what do people think?

I spent a little while removing part of the garden fence yesterday so I could try GAM for size where the car port will go. It fits just nicely…

Just a question Alan and not doubting your ability, are you sure you tightened those bolts in the first place? I've had a few strange things recently and i'm sure i did tighten them but the only real reason i can come up with is that i hadn't. The alterntive is some person of dubious paternity is playing with spanners when they shouldn't be!

Also as a general thing, if i've ever had a gearbox or similar out, i've always check tightened after a week or two and often found the bolts have settled. Worth a thought.........

[Othen]

Originally Posted by Derek UK

The bolts should have lock washers. Check the torque settings.

The bolts have plain washers - what type of lock washers were you thinking of?

[Othen]

Originally Posted by Laird Scooby

Just a question Alan and not doubting your ability, are you sure you tightened those bolts in the first place? I've had a few strange things recently and i'm sure i did tighten them but the only real reason i can come up with is that i hadn't. The alterntive is some person of dubious paternity is playing with spanners when they shouldn't be!

Also as a general thing, if i've ever had a gearbox or similar out, i've always check tightened after a week or two and often found the bolts have settled. Worth a thought.........

Thanks Dave. I forget lots of things these days - just getting old. Is it possible that I didn’t tighten the bolts? - of course it is! Well, they are tightened up now, and I’ll check them again in two weeks. If they are still tight then your theory might have some legs :-).

[Derek UK]

Split washers. The parts book just says lock washers. #951670 I guess you could use serrated ones #940147. They are used with the Allen bolts.

[Othen]

Originally Posted by Derek UK

Split washers. The parts book just says lock washers. #951670 I guess you could use serrated ones #940147. They are used with the Allen bolts.

Thank you for that. I’ll get some of the serrated type and fit them at annual service time.
Alan

[142 Guy]

The parts manual calls for the use of part # 940147 on the gearbox to bell housing mounting bolts. 940147 is a 'toothed' style lock washer

https://classic-volvo.com/getande-re...el-940147.html

It is still in use on Penta Marine engines and was used on 240 and 740 series cars so may be available from your Volvo Penta or car dealership if you want the OEM item.

Of course, the lock washer only works if it is properly torqued.