Ironhead 1979 1000xlh front drive (chain) sprocket tourque

[Hardtail28]

That's all... I am just looking to see what the spec is on the front drive (chain) sprocket for my '79 1000 ironhead .My book shows nothing on subject!

[1Scooter]

My 1970 -1978 FSM gives it at 150 ft lb, same as clutch hub nut.

[Hardtail28]

Alright then, unless anyone out there in TV land has any conflicting answer, I suppose that, I too will be setting the tourque to 150 ft. Lbs. On my 1979 1000xlh. Thank you much Mr. 1Scooter!

[72 Ironhead XLH]

You must be using the wrong book

[Hardtail28]

The image of the tourque specs are coming out extremely distorted/"fuzzy". At least, on my phone... is it 100-120lbs.?

[needspeed]

You're looking for the nut torque on the front sprocket for the rear drive chain. Correct?

That spec is NOT on the page shown in post 4. It shows the sprocket shaft torque on the engine sprocket at 100 to 120 ft lbs.

The front sprocket nut torque on the rear chain (mainshaft nut) is in the manual.

35 to 65 ft lbs.

Sorry, I may be confused on what nut you're asking about. If you had said primary chain or rear drive chain it would be more clear.

[72 Ironhead XLH]

gear shaft 100-120
sprocket nut 100-120
crank pin 150-175cyl head 55-65
cyl base 25-35
These are FT/Lbs

[Steve9]

I am no expert but will stick my oar in here

"sprocket nut 100-120" I'm taking this to be the front sprocket on the primary chain

The nut holding the front sprocket (countershaft) on my '81 driving the chain to the rear wheel sprocket is not very wide, I would not want to put 100/120 ft lbs onto it

I think 35/65 ft lbs is more in line with the hardware

[needspeed]

^^
Agreed on all of the above.

Originally Posted by Steve9

..The nut holding the front sprocket (countershaft) on my '81 driving the chain to the rear wheel sprocket is not very wide, I would not want to put 100/120 ft lbs onto it

Neither would I.

It still isn't clear what nut we're talking about.

[doodah man]

I also agree on the 35-65 ft/lb figure for the transmission output sprocket (rear drive) and 100-120 ft/lb on the engine sprocket - front drive inside the primary.