old_coyote_pedaller
MacRetro Rider
- Feedback
- View
Re:
Don't think hitting it out is a good idea using the original short bolt. If you have to resort to that, find a longer bolt with same thread so you can have it threaded much further in therefore not do damage to threads in pin and original bolt. Which you will do if you hit it when it's "almost totally" unscrewed. Then you're screwed. Besides the frame brackets are just aluminium, twatting them will bend them.
When I had to do this with the mounting pins on both ends of shock on a Marin, which were completely stuck, the first thing I did was liberally soak the pins with WD40. Then for the front one I removed both the small bolts then refitted one using one of the cup washers turned round so that the head of bolt wasn't in the recess in washer. I also put a steel washer between the head of bolt and cup washer to stop it cutting in. Gradually tightened the bolt till it started to move the pin, then do same with bolt/washer on other side of pin to pull it other way, more WD40 on ends of pin when it starts to move helps lube it to come out.
The swing arm pin is the same method but using the nut with a couple of washers under the nut so you can screw it on a bit before it comes to end of threads on pin before it starts to move, then transfer the nut/washers to other end. I did have to hit the pin to get it all the way out but only after it was moving without using a lot of force, support swing arm so you don't bend anything.
I found the rear pin much more difficult to remove as the aluminium mounting spacers were corroded on to pin. Sat the frame on it's side then sprayed WD40 into hole in arm and left it for a day then did same for other side.
Don't think hitting it out is a good idea using the original short bolt. If you have to resort to that, find a longer bolt with same thread so you can have it threaded much further in therefore not do damage to threads in pin and original bolt. Which you will do if you hit it when it's "almost totally" unscrewed. Then you're screwed. Besides the frame brackets are just aluminium, twatting them will bend them.
When I had to do this with the mounting pins on both ends of shock on a Marin, which were completely stuck, the first thing I did was liberally soak the pins with WD40. Then for the front one I removed both the small bolts then refitted one using one of the cup washers turned round so that the head of bolt wasn't in the recess in washer. I also put a steel washer between the head of bolt and cup washer to stop it cutting in. Gradually tightened the bolt till it started to move the pin, then do same with bolt/washer on other side of pin to pull it other way, more WD40 on ends of pin when it starts to move helps lube it to come out.
The swing arm pin is the same method but using the nut with a couple of washers under the nut so you can screw it on a bit before it comes to end of threads on pin before it starts to move, then transfer the nut/washers to other end. I did have to hit the pin to get it all the way out but only after it was moving without using a lot of force, support swing arm so you don't bend anything.
I found the rear pin much more difficult to remove as the aluminium mounting spacers were corroded on to pin. Sat the frame on it's side then sprayed WD40 into hole in arm and left it for a day then did same for other side.
