[ROVERNET - UK] Shifting Problem (post for friend)
Steve L
jaoa27 at verizon.net
Thu Mar 1 03:53:19 GMT 2007
Steve,
Thanks for the info. When I go to my friends house to rectify this problem,
I will definitely check for rear seal leakage, and a possible contaminated
clutch plate. I know the engine was rebuilt not too long ago. I did not do
that rebuild, so it is possible whoever did it used the old rear seal. Too
bad because I have a couple of them and would have supplied one (if this is
the case).
Steve
>Steve,
>Our P4 100 has/had possibly related clutch issues. When we bought it in
>'01, we knew that it became difficult to get into gear after it was
>warm. The problem got worse over several months of active use. I had
>to slip it into first just before coming to a full stop and keep it in
>gear, otherwise it would not go into gear from neutral with the engine
>>idling. This led to a project to replace the clutch and rear main seal
>and resurface the flywheel. My theory is that the leaky rear seal
>caused the clutch disk to get soaked with oil, and it swelled enough to
>drag. With around 37,000 miles at the time the disk wasn't worn enough
>to compensate for the swelling / sticky surface. I had the clutch
>linkage adjusted for maximum release with the pedal to the floor, with
>hardly any pedal travel at the other end of the range with the upper
>stop "adjusted" for more travel.......
>The new clutch transformed the shifting for the most part. It is now
>happy to slip into first after idling in neutral and generally shifts
>nicely. The previous owner is amazed to see how easily it goes through
>the gears when we visit and give him a ride.
>It is, however, still a little reluctant to go into 3rd when shifting on
>the move -- after it is warmed up. I am suspicious that the synchro
>rings may have gotten abused over some years of use with the dragging
>clutch, and I guess that the sychro likes the viscosity of the gearbox
>oil best when it is cold. I have been using engine oil in the gearbox,
>partly because it has a Laycock overdrive. I intend to try Redline MTL
>which is a synthetic "manual transmission lube" that is supposed to give
>optimum friction for sychro operation, while providing lubrication for
>the gears. It's popular with the Volvo crowd for manual gearbox cars,
>including those with overdrives, and the Redline tech said it should be
>good for a manual/overdrive application. I didn't use the car much last
>year and never got 'round to this test, but will have to do it this season.
>--Steve Manwell
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