Whether it was due to ignorance or otherwise, it was the done thing in the 70s to remove those 'pesky' adjusters at the first brake shoe change. You will probably find that more than 50% of old Holdens out there have had their rear adjusters eliminated. This goes for Falcons & Valiants as well.
In hindsight it would have been better to understand how they work & let them operate as designed. The rear brakes would need far less servicing.
Dr Terry
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