>I've returned to the MG list to share / retreve data from fellow MGB owners.
>Its been a few years since I signed off, and many things have happened.
Welcome back!
>Now the overdrive transmission is starting to flake out, and I need help.
>The clutch shutters when releasing and has done so ever since I replaced the
>original clutch (not related to lightened flywheel). The OD unit is working
>but only when gas is applied. The unit drops out when coasting downhill or
First clue...
>decelerating. Typically it jumps back and forth, in and out, until gas and
>acceleration is resumed. Anyone with ideas?? I measured the hyd system
>pressure and found that the needle fluctuated wildly but dont know if thats
>normal. The average value of the fluctuation is about 420 psi and normal.
Second clue...
Richard,
The fact that you have decent pressure leads to be suspect your problem is
electrical
rather than mechanical.
There is a switch that limits O/D engagement in the side of the overdrive
gearbox.
The nose of said switch is depressed as you engage 4th gear. With time, the
plunger
inside the switch wears away and produces the symptoms you describe. Eventually
the O/D will not engage atall. You may want to check this; the switch is about
~$10.
--Scott
Scott Hower -> howersl@mailexcite.com
73 MGB
78 Midget
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