In an earlier post
www.seabreeze.com.au/forums/Sailing/General/TS-1000-blues?page=1#20 ) I fixed the damage to the fitting on the drive screw shaft and guide rods on my ST 1000.
After reassembly it ran, but was still noisy. So, I took it apart again and found damage to the bearing housing on the inward stroke end.
This allows the whole screw shaft, bearing and pulley to move inward into the gearbox.
Luckily I watched this blokes unsuccessful attempt at a repair before I tackled mine.
and
This bloke used a 3D printed thrust bearing.
I looked for the simplest solution.
Firstly I tried to remove the drive pulley to access the bearing, but it seems quite fragile and I didn't want to make matters worse so I looked at an in situ repair.
There is a groove turned on the screw shaft just after the bearing.
From a scrap piece of 2mm aluminum, I made up a 17mm dia washer/clip with a 5,5mm hole in the centre.
Cut a slot to the centre hole and carefully filed the thickness down so it was a very snug fit on the screw shaft groove.
This washer replaced the disintegrated plastic and if you are accurate with the measurements it holds the screw shaft to the bearing without any slop.
Of course, all of this damage came about because there are no stroke limiting switches ( as Wongaga has pointed out). So, that is the next project.
