Rebuilding the Laycock de Normanville D-Type Overdrive Part 1
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- čas přidán 13. 02. 2021
- Watch as we disassemble the Laycock D-Type overdrive from a Triumph Spitfire. D-Type overdrives were used in a large number of vehicles, and the procedure is largely the same (some things may change, such as the amount of pressure generated or the gear ratio with overdrive activated). You'll also learn how to make a tool to remove the oil pump, since most of us don't have a stock of Churchill tools in our garages. Please subscribe if you like what you see, and don't hesitate to ask questions in the comments below. Thanks for watching!
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Really impressed with this one! It takes more courage than most have to tackle this kind of project and you showed a lot of ingenuity making your own tools - well done! Thanks for posting.
Thank you for the compliment! Most of the churchhill tools are pretty difficult to find now. You have to make your own sometimes to be able to continue forward.
I have one out of my 1962 sunbeam..it's got to be rebuilt so thanks for this video...
The overdrive is actually pretty simple to rebuild. I was surprised when I did the first one.
Would you happen to have any documentation for the D type? I seems like manuals for the A and J types are common enough, but these videos are about the only thing on the D type.
Edit: Found it as a part of the large, 6 group manual for the Herald, Vitesse, and Spitfire. It's towards the end of Group 2.
Glad to see you found it. Sorry for the late reply!
13:05 could you use a puller of some type once the bolt is threaded on rather than adding shims?
You sure can. That said, you'd need a puller that will pull from the center and brace against the ends without damaging the case. Most pullers press against the center (like when removing a bearing from a shaft), so it wouldn't be something the average hobbyist would have in their tool kit. There was a Churchill tool initially, but these are hard to find now.
@@midwestmotoring I was trying to think of a way all thread would work to make it easier.
Basically the answer is yes, but the type of puller you'd need isn't worth spending money on for the number of times someone's going to do this job at home.
I guess if you had a socket that was large enough (and deep enough), you could enlarge the hole in the middle. Then the thread could go through the socket and you could put a washer and a nut on the outside. Trouble is, large sockets aren't cheap... so probably not worth the cost unless you're doing the job more than once.
@@aggiebq86
@@midwestmotoring instead of a socket, why not just a piece of pipe?