Hopefully the "spare" OD will be in better shape (it appears to have been rebuilt, based on disassembly so far) and I'll probably end up with many parts of that one in the car for the season. Here's the remains compared to a good bushing from the backside of the housing. While I'm disassembling, the remainder of the top hat bushing comes out easily (was no longer pressed into the front housing). The remaining bits of the thrust washer and some pieces of the carrier can be seen in this shot. Looks like it was running that way for a bit because the shape of the depression in the planetary gear carrier is worn into the teeth of the sun gear.Īnnulus and unidirectional clutch: carrier for the rollers in the unidirectional clutch is in parts. You can see the piece sitting on top of the planetary gear carrier. I find one small piece of it in the center hole. Planetary gears: there's supposed to be a thrust washer between the center gear (sun gear) and the housing. I do really appreciate all of the great advice I got! Mind you, this OD unit worked GREAT at the last race!īy the way, I'm not mentioning names of those who gave me advice in order to protect personal information. Here's what I found when I took it apart. Others say that if THAT's broken, probably other stuff is. It needs to be pressed into place and if that distorts the bushing you need to hone it out so the output shaft from the tranny fits. But, John says he's replaced it many times.
#LAYCOCK OVERDRIVE PARS PDF#
Others mention that the Laycock manual says that bushing can't be replaced (and sends a PDF of that manual, posted at the end of this page). John says that this is a top hat bushing and is only available used. A couple of folks suggested that I talk to John at Quantum Mechanics. Posted links to the pictures to the FOT list. Here's the intact bushing in an old OD unit: It turns out that there's a top-hat bushing in the "pump housing" that isn't listed in any of the exploded diagrams or parts lists. So, I take the OD off and find that the problem isn't what I thought. I figure it's the rear thrust washer so I order all possible thrust washers and o-rings in preparation. These pieces (pics of front and back) came out with the oil. Tranny and OD were working great, so a preventative fluid change should cover me for the season, right? I took the big plug off of the bottom of the OD because it was leaking and I was going to replace the gasket under the plug. NKC23As fitted to many Triumph Cars and Sports CarsTriumph TR6Triumph StagTriumph SpitfireTriumph DolomiteTriumph 2000 SaloonTriumph 2. So, I drain my tranny to replace the oil. Laycock de Normanville J-Type Overdrive High Pressure Filter / strainer.
#LAYCOCK OVERDRIVE PARS FULL#
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