There are one of two options I recommend :
1 - Use the same spur adjuster...and lubricate BOTH the male and female thread assemblies with
anti seize lube after cleaning the spur adjuster and threads on the assembly
2 - Replace with a new spur adjuster assembly...and lubricate BOTH the male and female thread assemblies with
anti seize lubeOn rigs still using the current assembly parts (like the travel trailer on this thread), what I do with the same spur adjuster is mark a dot on a tooth or on the side of the round wheel at any position (like 12 o' clock) before rotating it, so you know how many full turns it takes to remove the thread assembly which in turn knowing the exact position it originally was when you reassemble it after cleaning and lubricating the threads....
I used brakeleen to clean old assemblies, and apply a light lube spray on the threads and thread hole, installing fully in and back out to ensure the assembly turns freely and knowing there is no piitted or hang up areas of the assembly - before I re-lubricated the threads again with anti seize lube by applying it on both male and female threads, screw the assembly all the way in and back out, and reinstall again to original position (which will be very close to the original adjustment)....
This is a new spur adjuster I purchased when I assembled all new rear shoe brakes on my 1973 half ton F 100 Ford pickup that needed it :
Even with the brand new part, I still fully worked in the anti seize lube shown on this spur adjuster assembly (the silver-gray color coating the threads)
One of the old spur adjuster assembly still had three minor hangup spots after lubricating (but still fully turned throughout after cleaned and lubricated) as the other side was still usable and turned freely with no hangup spots, however I replaced it with a new one anyway since the other side needed the new spur assembly and saved that used good part for a spare if needed....
As you can see the spur adjuster at the bottom of the brake hardware on this axle, the advantage of applying the anti seize lube is the adjuster will always turn freely and protect the threads at the same time...
As an additional precaution shown here on the backing plate - I coated the brake shoe pin mount areas with grease to slow down the long term rusting process as I also coat the pin mounts themselves with grease on the inside of the brake assembly, installed a vacuum cap over the bleed valve to protect it, etc. as the tricks of the trade of living in the arctic and avoiding long term problems.
I have yet to have any problem with a seized, rusted, or dried up spur assembly ever re-occur under extreme cold or extreme heat conditions, even in the long term when I apply anti seize lube on the spur assemblies, - the spur adjuster will always turn freely at all times whenever the self adjuster kicks in....I mainly use anti seize lube for brake assemblies, exhaust nuts and bolts, and other assemblies where areas of heat or extreme moisture surround it so it will not be stubborn for any disassembly and what have ya - great stuff.
