ed 66 plant Posted December 21, 2016 Share Posted December 21, 2016 Gentlemen, On taking the body off my Hornby rebuilt M.Navy I discovered that the coupling rod on the rear 2 axles had come away minus the retaining pin on the middle axle.It seemed that the rod came away leaving the pin in situe so I was able to save it. My question is --how best to effect a good repair--Is the pin supposed to be force fit?--use black tac to position the pin and press home?--Do I need a glue application? Any help will be greatly appreciated. ps this followed the need to glue the metal top to the valve motion in place. Link to post Share on other sites More sharing options...
ed 66 plant Posted December 24, 2016 Author Share Posted December 24, 2016 Moving things on a little-----have reassembled but cannot get a good firm crank pin penetration thro, the eye of the coupling rod to the matching eye it is supposed to fit into behind--the pin waddles in the reassembly and locks up the drive because of the angle created. I,ll next try a thin nosed pair of fine pliers to see if I can re-establish a firm fit. Everything else is in good order/quartering / valve gear/motor drive etc Link to post Share on other sites More sharing options...
ed 66 plant Posted December 25, 2016 Author Share Posted December 25, 2016 It may seem a little strange as I continue to converse with myself (imminent mental problem?)but I think I am making progress and others may benefit from my monologue. Having found the Hornby M.N SERVICE SHEET 267C I have found on the spares list X8855, a picture showing a small parts pack X8855. This contains both the pin and the MISSING BUSH used to connect the 2 parts of the coupling rods.This would explain why the drive locked up. Have just ordered the small parts pack of ebay and I will hopefully finalise my saga positively in due course. regards,Ed Link to post Share on other sites More sharing options...
RMweb Gold Enterprisingwestern Posted December 25, 2016 RMweb Gold Share Posted December 25, 2016 You're not talking to yourself, you're tackling a problem no one else, (me included, as I model diesels, so hardly surprising!) has presumably encoumtered. You've solved the problem yourself, and provided a valiable resource for everyone else on here, consider yourself a modeller! Mike. Link to post Share on other sites More sharing options...
ed 66 plant Posted December 26, 2016 Author Share Posted December 26, 2016 Mike---thank you for your kind comments--I hope you are right. best regards, Ed Link to post Share on other sites More sharing options...
ed 66 plant Posted December 27, 2016 Author Share Posted December 27, 2016 Gentlemen----sorry to report a slight change in approach. The small parts kit contains the pin and bush used to connect the front part of the coupling rod to the centre driver--not the pin to jointhe front/rear parts of the coupling rod just behind the boss of middle driver. There is a considerable amount of slop/free movement of this rear coupling rod where it mates up with the rear driver ----where a speedo has been removed.I think this has caused the problem over time--up until this "coming apart" there was no problem. I need to reduce the side play on this pin projecting out from the back driver with a suitable collar or replacement pin from the small parts set ordered.I may also find a pin of good fit to replace and secure the worn pin used to connect the two parts of the coupling rod. I will not be fitting a speedo as this would not fit into my era. I will keep you posted!!! --As per per normal I need to "grind these model engineering issues out". Hope I am not boring anyone with my goings on!!! regards,Ed Link to post Share on other sites More sharing options...
Recommended Posts
Archived
This topic is now archived and is closed to further replies.