[TR] OD Transmission problem - suggestions?

[David Porter]

Have your mechanic rig a light to the solenoid power and observe if it 
stays on (not electrical) or goes out when the symptom occurs 
(electrical) see Randall's #3

dave


On 5/19/2016 8:22 AM, Rye Livingston wrote:
> I will send this to British Motorsports.
>
> Thanks,
>
> Rye
>
>
>
> On May 19, 2016, at 06:29 AM, Randall <tr3driver at ca.rr.com> wrote:
>
>> Almost certainly an A-type, as that is the only type fitted as original.
>> Very slim chance someone fitted a J-type along with a later gearbox, 
>> but not
>> likely. I guess anything is possible (I once saw a Spitfire with a 
>> 426 Hemi
>> under the hood), but you'd have to be slightly crazy to put a LH or D 
>> type
>> behind a TRactor motor.
>>
>> Things I would look at:
>> 1) Does the pressure hold when the problem is actually happening? (Or did
>> they only check it on the bench)
>>
>> 2) How far does the ball in the operating valve actually move? It's not
>> unusual for components to wear until the "setting lever" is no longer
>> accurate.
>>
>> 3) Is the solenoid still drawing current when the problem happens?
>> Obviously, if not, the problem is electrical (outside the OD).
>>
>> FWIW, I am currently having a somewhat similar problem with the 
>> A-type in my
>> 56 TR3. In my case, the problem is almost certainly the 3-4 isolator 
>> switch
>> being intermittent. Bumping the shift lever slightly forward (not 
>> enough to
>> shift out of gear) or backward will usually get it to make contact again.
>> Sooner or later, I'll have to pull the cover and change the switch. Maybe
>> this time, I'll pay more attention to the number of shims under it.
>>
>> I'm also curious how they established that the OD clutch is not slipping.
>> How much torque did they apply to try to make it slip?
>> Was that while you were seeing the problem?
>>
>> -- Randall
>>
>>
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>
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-- 
Dave Porter Porter Custom Bicycles 2909 Arno St. NE Albuquerque, NM 
87107 505-352-1378 Go HERE: my world www.porterbikes.com/
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