[Fot] TR-4/6 trans top cover advice (won't go into 3rd gear)

[Gerald Van Vlack]

Tony, Phil and Amici Triumph,

I add that the tapered square set screws that position and hold the shift forks are prone to snap when trying to remove.  I've found that using an 8-point socket, ( it's 5/16 ") helps avoid snaping the set screw. I've also used an impact with good success in removing them. Snapping one leads to all kinds of frustration, #!&%* words and more.
What's important is to not use any extension and maintain a straight approach.

JVV

________________________________
From: Fot <fot-bounces at autox.team.net> on behalf of Philip Gott via Fot <fot at autox.team.net>
Sent: Thursday, August 15, 2024 9:54 PM
To: Tony Drews <tony at tonydrews.com>
Cc: Amici Triumphi <fot at autox.team.net>
Subject: Re: [Fot] TR-4/6 trans top cover advice (won't go into 3rd gear)

Tony;
Dave and I took a cover apart last winter. The force required to move the shifter against the detents had declined over time and contributed to the gearbox popping out of 3rd.  New springs and balls from Moss and a luggage scale enabled us to re assemble the cover and set the detents properly. A fairly easy but fussy job.
I know that does not completely answer your question, but it is a part of the job that you should do upon re assembly and it is not hard.
Phil Gott
Sent from my iPhone

> On Aug 15, 2024, at 7:54 PM, Tony Drews via Fot <fot at autox.team.net> wrote:
>
> At my last race, I felt entry to 3rd gear have some resistance, then the resistance went away, but near the end of the weekend something happened that prevents me from shifting into 3rd gear. I can shift into all of the other gears just fine.  Didn't feel like a internal gearbox issue (I certainly hope not, I just replaced all the quaiffe goodies in there).  I've never taken the top cover apart / had to fix that.  It does still have the overdrive switches in the top of it even though I'm no longer running the OD.
>
> So... I'm planning to remove the tranny top cover this weekend and see what's going on.  I probably have a spare from an unknown quantity transmission from my Dad's stash, but I'd like to fix the existing one if possible.  For those who have done it, how fiddly of a job is it to take that stuff apart?  Any ideas what would keep it from shifting to 3rd?  I have noticed increased resistance on the 3/4 shift rail since my rebuild earlier this year (but didn't have time to look into it at the time).
>
> Looking for words of wisdom from those who have been there / done that.
>
> In other news I have some pretty epic videos from last weekend's race at Grattan coming.  Here's a appetizer from the "Genius Garage Invitational": https://www.youtube.com/watch?v=_LWlZIFA_gg
>
> All the best, Tony Drews
>
>
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