AlanG Posted March 20, 2017 Report Share Posted March 20, 2017 As I stripped the GB top cover the 1/8" pin, fixing the 3rd gear change selector rod end to the selector rod,fell out. What's the best way to rectify this? I'm thinking of lightly countersinking the hole either side of the rod and peening over the ends of a new piece of 1/8" rod. I don't think new pins are available and holes are worn oversize anyway. Just a thought.... were these taper pins of some sort? Would they work? Are 1/8" taper pins available? Alan. Quote Link to post Share on other sites
RogerH Posted March 20, 2017 Report Share Posted March 20, 2017 Hi Alan, I don't know if they are taper or not but I would have thought they aught to be http://www.ebay.co.uk/itm/Taper-pins-Mild-Steel-BS46-Part-1-1951-Various-Imperial-Lengths-/302247000998?var=&hash=item465f533ba6:m:meaYdndQBN1TJgXUV7j4-pA Parallel pins don;t always stay put. Using a selection of drills (the blunt end) can you determine the size of the holes to see if taper or not. Roger Quote Link to post Share on other sites
Lebro Posted March 20, 2017 Report Share Posted March 20, 2017 Replace with split (mills) pin ? Bob. Quote Link to post Share on other sites
RogerH Posted March 20, 2017 Report Share Posted March 20, 2017 Hi Bob, that would be a 'roll pin' - good idea. Refitting a taper pin could be a problem if the hole is damaged Refitting a roll pin is easier as the next size up could be used. http://www.ebay.co.uk/itm/120pc-Roll-Pin-Tension-Pins-Spring-Pins-C-Pins-Assortment-Set-Mixed-Sizes-Black-/321577192765?hash=item4adf7e8d3d:g:GtsAAOSwSlBYrx8q Roger Quote Link to post Share on other sites
AlanG Posted March 20, 2017 Author Report Share Posted March 20, 2017 Roll pin sounds a good idea. Would it be strong enough? Alan. Quote Link to post Share on other sites
John L Posted March 20, 2017 Report Share Posted March 20, 2017 You could use 2 roll pins one inside the other, or a spiral pin may be as strong. John Quote Link to post Share on other sites
AlanG Posted March 20, 2017 Author Report Share Posted March 20, 2017 How about these http://www.keysandpins.com/products/groove-pins I think the original pin is something similar. Min. quantity might be a problem though. Alan. Quote Link to post Share on other sites
stillp Posted March 20, 2017 Report Share Posted March 20, 2017 What pin are we talking about? I thought they were held by wedglok set screws? Pete Quote Link to post Share on other sites
AlanG Posted March 20, 2017 Author Report Share Posted March 20, 2017 No Pete, It's the pin that holds the "fork" at the end of the 3rd gear gear selector rod ( what the end of the gear lever locates in ) to the selector rod. It's not listed in any of the parts lists. Alan. Quote Link to post Share on other sites
stillp Posted March 20, 2017 Report Share Posted March 20, 2017 OK, thanks. Gearboxes scare me. Pete Quote Link to post Share on other sites
RogerH Posted March 21, 2017 Report Share Posted March 21, 2017 Hi Alan, I would go for the 'roll' pin. If they can hold a clutch fork then I'm sure they can hold a selector fork. Hi Pete, the outer two rods have the wedgelok screws but the central rod has a pin. Roger Quote Link to post Share on other sites
AlanG Posted March 21, 2017 Author Report Share Posted March 21, 2017 Hi Alan, I would go for the 'roll' pin. If they can hold a clutch fork then I'm sure they can hold a selector fork. Hi Pete, the outer two rods have the wedgelok screws but the central rod has a pin. Roger Hi Roger, I was going to use a groove pin in the end but they are a bit scarce and none of the suppliers I could find would do less than a qty. 100. I tried a local engineering suppliers and they suggested a roll pin and they agreed with you that a roll pin would be more than strong enough. So I have fitted one. It was a tight fit and looks fine. Thanks everyone for the advice. Alan. Quote Link to post Share on other sites
RogerH Posted March 21, 2017 Report Share Posted March 21, 2017 Hi Alan, excellent stuff. When you rebuild the rods back into the top cover consider using Q-seals (or Quad seals). They are better than O-rings as they have two contact areas. Imagine a four leaf clover with a hole in the middle for the rod. Have a look here http://www.easternseals.co.uk/products/x-rings/ I used 'Mayday seals' in Gloucester. The seal size is something like 4112 or maybe Q112. Roger Quote Link to post Share on other sites
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.