Another guide, now for the RSX STIs. These were in lovely cosmetic condition, and its obvious they did not get damaged over the years. However, the left hand shifter did not click at all. Right hand was very very stiff when clicking. Obvious signs of the gummed up grease.
RSX levers are not symmetrical. The right side lever is different to the left side lever. So I will be going through both left and right sides in this guide.
Well, first things first. Remove the hoods to clean up te lever body and hoods. However it is not neccessary.
Use a 2mm allen key to remove this grub screw. THeres a little threadlock so it may be tight.
Get some sort of tool(4mm key in this case) to push out the pivot.
Now you can remove the lever from the body. Use a 5mm allen key to unscrew the nameplate screw. Make sure youre holding onto both the name plate and the lever when unscrewing, otherise there is a possibility that the name plate will go flying off as its connected to a loaded spring.
Carefully lift whilst twisting the name plate off. You will be greeted with this spring. This is different to the assembly of the new Sora(3300) and 105(5500) levers, but exactly the same as the RX100. Id say its much more easy to dismantle and rebuild because the spring is here.
Flip to the backside of the lever, and push over the smaller lever to reveal a Phillips screw. Unscrew this, and be careful of a small screw washer behind.
Now the large lever can be pulled off to reveal the innards. I believe this would be the levers that are the cleanest out of mine, but also the one which has dried up the most.
Proceed with cleaning up the old grease using whatever means you like(I like to use petrol). The dried up grease was some serious stuff. Though a quick soak would allow me to brush if off, but that was not the case. I had to soak it for a couple minutes together with a lot of brushing before it started to slowly clean up. Once cleaned up, apply grease to the pawls.