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When we make a new Rod screw for the Palm D keyas per Repair 6, we find the reciever thread is very worn and needs repair
With our drill alignment jig, drill out the threads from the post.
A new rod screw was made as per Repair 6
Hinge tube was lengthened and tightened as per Repair 7
Finished Palm Eb
Palm F
Brass tubing 2.5mm external, 1.2 internal
A 1-72 tap needs a 1.5mm hole, centre is drilled to suit
Cut away excess tubing
Press fit home
1-72 tap to establish internal threads, I like to cut the threads before fitting the bushing, thread tools typically cannot reach the post when fitted.
Soft solder, flux and torch
We cover the bushing with a light layer of solder, this process is called tinning.
With a torch we heat the post and the solder that was applied during the tinning process now flows, this post process is known as sweating the joint.
File to shape
P7
Side to side movement
2.5mm through hole
The key is loose on the Rod screw.
The key is loose between the posts
Rod screw is damaged
A new rod screw was made as per Repair 6
Hinge tube was lengthened and tightened as per Repair 7
Finished Palm F
Screw the bush onto the end of the rod
When removing the Palm D key, we found the threads on the Rod screw had been clamped and flattened
This is one of those dodgy repairs it has had over its years
Flattened side view, the crushed threads make the rod bind in a worn post
Type 8 Repair, Worn Reciever post threads
Repair is carried out to retain original thread, we are going to rebush the reciever post
Palm D Reciever Post
Palm D
The key is loose on the Rod screw.
The key is loose between the posts
Rod screw is damaged
Reciever Post is damaged
One threaded rebushed post
Finished Palm D Reciever post