Cooler adapter plate

[randy]

Here's a question I haven't found an answer to, although I've search the posts:

What is the proper torque for the cooler adapter plate - to - engine?

Maybe some of you with and '80-'81 sevice manual can look this up?

Thanks.

[red bandit]

Torque is usually determined by bolt size, so if you find the torque of another bolt the same size you should be good.

[randy]

redbandit;

In any other case you'd be right, but this bolt is not structural and it threads into the aluminum block. The nearest similar size bolt is the rear axle, over 100 ft-lbs!!. That would rip the threads right out of the block. That would be a bad day.

I'm estimating it's supposed to be torqued a bit more than the filter bolt, just enough to keep the adapter in the block when removing the filter bolt.

But I'd rather get a spec.

[Pat Kelly]

I don't have the spec you're looking for but...
Use locktite on the adapter nut. Then it won't spin out with the oil filter bolt.
I tighten it about the same as the drain plug. No 'set in stone' number, just "really snug".

[randy]

Gee,

I assumed the torque spec would be in the '80 service manual? Didn't the'80 come with the cooler from the factory?

So, I should tighten it somewhere in between finger tight and really ****ing tight?

[Do Lee]

The oil filter bolt is around 16 lbs. of torque, I torqued mine just alittle more than the 16 lbs. by 1 or 2 lbs. and as Pat said used locktite to secure bolt in motor.

[Do Lee]

Correction looking at the 1978 service data specs on the Yamaha parts pages the Oil filter is 23.1 ft-lbs. I still would tighten the adapter plate bolt alittle more with locktite.

[red bandit]

over 100 ft-lbs!!. That would rip the threads right out of the block. That would be a bad day

Right you are. What I meant was, a bolt in aluminum vs a bolt in aluminum, such as the filter bolt. Sorry.

[mro]

I assumed the torque spec would be in the '80 service manual? Didn't the'80 come with the cooler from the factory?

Double checked factory manual, not listed for G or SG
Have another manual in my shop, will take a look at today.


mro
btw, neither my 80 or 81 came with a cooler.

[81xsproject]

If anyone has a Clymer, I believe the info is in the suplimentary info in the back, but can't look til I get home around 3.

[TopCatGr58]

Sorry Jessie,

The Clymer talks about the "Special" since 81 being the Full Dress Tourer! It talks about torque specs for the saddlebags and repairing windshield, but no mention of the oil cooler!

I also checked the Yamaha parts site, but they had NO Service or Tech Data in the 81H section. So...Randy, looks like Good-n-tite with locktite is the way to go!
T.C.

[79XS11F]

Check your manual in the front area about torquing bolts. There is a general list for all the bolts there somewhere so you can torque every bolt on the bike to cover off the bolts and nuts that the manual does not list in the specs in the instructions. If I recall there is a spec based on bolt size and hardness... check it out
Rob

[79XS11F]

My mistake ... it's in the factory manual at the back. what size are these bolts?
Rob