Torque settings

[Dave Gee]

I  have had to remove the rear brake drums from my Belna. Does anyone know a torque setting for tightening the nut that holds them onto the taper?

Dave

[Kari]

I never have seen any published torque values for the Augusta. I only use a torque wrench on the cylinder head nuts because the attachment of the cylinder heads studs in the block is somewhat fragile. I torque to 85 Nm in several steps.

The rear brake drum is attached by an M16 X 1.5 nut. That is a fine tread. If we assume the strength class as a medium 8.8, then the value will be 180 ft lbs. This varies if the tread is dry or lubricated.
Also, the nut has to be lined up to the hole for the split pin. I have taken the value from the attached chart, therefore no guaranties are given. I am sure you'll find other charts in the internet, for comparison.

https://www.anzugsmoment.de/metric-threads/metric-fine-thread-bolt-torque-chart/

Karl

[Kari]

The values I have mentioned further up are for nut and bolt connections. I am aware that for a taper shaft, less is required.
The only reliable source I could find today is from a 1948 Holden FX. The tread of the rear half-shaft is 5/8-18, which is close to the M16 x 1.5. The Holden data states 110 - 120 lb.-ft.

I have measured the torque value on my car as 95 lb.-ft. At that value the nut is lined up with the hole for the split pin.

Karl

[Dave Gee]

  Thank you Kair I can now progress

  Dave