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Author Topic: autobox lock up  (Read 621 times)

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tidla

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autobox lock up
« on: 05 November 2010, 22:58:01 »
dont know much about the innards of an autobox so i thought id do a bit of light reading..
it mentions a lock up clutch.
from this i assume that at a point of given revs, the engine speed  will be matched by road speed?
is that correct?

next chapter, epcyclic boxes...
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Kevin Wood

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Re: autobox lock up
« Reply #1 on: 05 November 2010, 23:13:20 »
Lockup effectively disables the torque converter so you lose the variable gearing it provides and it behaves more like a manual box. Mine locks up above between 40 and 45 MPH in either 4th or 3rd gear. They will lockup in 2nd if the fluid is getting a bit hot too.

Kevin
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sassanach

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Re: autobox lock up
« Reply #2 on: 06 November 2010, 11:49:20 »
this is all news to me, "4th" gear IS the tc locking up.i am not aware of it locking in "3rd",please enlighten!
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