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The switch may be pipe thread, but you set its depth with shims
(which are just fiber washers), part# 134 in this diagram:<br>
<br>
<a class="moz-txt-link-freetext" href="https://mossmotors.com/external-gearbox-4-speed-side-shift">https://mossmotors.com/external-gearbox-4-speed-side-shift</a><br>
<br>
The lever on the shift rod (#94) bumps the switch; it only presses
against the switch, closing its contacts, in 3rd & 4th. Pushing
the lever to the right pushes the shift rod to the left into the
switch. If you have a 'shim' under the switch, removing it, or
putting a thinner one in, should solve the problem (the tip of the
switch has limited travel, you don't want to jam it into the
switch). If not, you'll need a new switch (contacts worn, maybe).
Least likely, but not impossible, is a worn shift rod (they're
brass).<br>
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<div class="moz-cite-prefix">On 6/15/2022 7:33 PM,
<a class="moz-txt-link-abbreviated" href="mailto:m.g.sharp@sympatico.ca">m.g.sharp@sympatico.ca</a> wrote:<br>
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<p class="MsoNormal">Hi listers, I am finding that my BT7 (i.e.
sideshifter) is dropping out of overdrive if I wiggle the
shift lever to the left. This is without doubt opening the
contact in the gearbox switch that only permits the O/D to
operate in 3<sup>rd</sup> and 4<sup>th</sup> thus causing the
O/D to disengage. Pushing the lever to the right re-engages
it. I do not recall any adjustment on the switch to screw it
in further, in fact I think it is a pipe thread and will only
go in so far. I am not sure what part of the shift lever
actually bears on the end of the switch to engage it. The
workshop manual is not much help in figuring it out. Is it
the switch or is it what ever it bears on when in 3<sup>rd</sup>
or 4<sup>th</sup>? I have not had the g’box cover off to
look at it yet but thought I’d ask the list if anyone had
encountered this. <o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Thoughts and ideas?<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
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