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Re: What the heck's a S.4221A-19?

To: "Douglas Frank" <frank@zk3.dec.com>
Subject: Re: What the heck's a S.4221A-19?
From: "Graham Stretch" <technical-iwnet@lineone.net>
Date: Mon, 17 Jan 2000 23:11:48 -0000charset="iso-8859-1"
Cc: "List Triumph" <triumphs@autox.team.net>, "List Spitfires" <spitfires@autox.team.net>
References: <38833112.449ECEF@zk3.dec.com>
Hi Douglas
I have stripped many Triumph trannys for rebuild without this list of
special tools and the only thing that is really hard is the circlip that
holds the third speed constant gear onto the main shaft, this involves
having three hands in the space available for two, use two fine tipped
screwdrivers to pry the clip outwards and a third to lift the clip away from
the groove. Once you see the clip you will get the idea, DO NOT be tempted
to reuse this clip it will almost certainly break when you change gear for
the first time (I keep a bag of these at all times as they will also fail at
will). I think some of the tools there are for testing the synchro hub
release pressure (use your own jugement or ask a friend that has done it
before) and one for protecting the front oil seal on reassembly.
If your tranny has o/d please don't forget to release the tension on the o/d
cone clutch and one way roller clutch, this op is detailed in the manuals,
if you don't you will not separate the two components. If the box is out of
the car and you are not sure of the status of the cone/roller clutch if you
have access to some drills and taps and optionally a lathe you can make up a
plug with a grease nipple in to allow you to pump oil into the unit to
release the cone. If you don't have access to the tools proceed as follows,
connect a power supply (battery charger or jump leads from battery) to the
solenoid, fit a moderately powered electric drill (circa 500w) to the input
shaft, grip the chuck up moderately tight (not so tight as to risk marking
the pilot bush land, also you don't want it to slip as this will also cause
marking). When you have all this set-up select a gear, I usually use third,
then spin the box using the drill whilst a helper (forgot to warn you about
that) disconnects the power from the solenoid a couple of times, if it works
you will hear the load on the drill change and /or see the output flange
increase in speed.

Hopefully helpfully, Graham.



----- Original Message -----
From: Douglas Frank <frank@zk3.dec.com>
To: Triumphcars <Triumphcars@onelist.com>; Triumphs
<triumphs@autox.team.net>; spitfires <spitfires@autox.team.net>
Sent: Monday, January 17, 2000 3:11 PM
Subject: What the heck's a S.4221A-19?


>
> Hello the camp,
>
> Well inspired by the New England Triumph tranny-teardown demo held last
> Saturday in Salem NH, I went right home and began stripping down my car's
> gearbox, using the workshop manual (i.e. the GT6/Vitesse vitals "Red
Book")--
> which calls for, in addition to the common sorts of tool, one each of:
>
> S.314/1
> S.4221A
> S.4221A-19, -19/1 and -19/3
> S.4235A-2
>
> does anyone know where I can find drawings of these thingies, so I can
have
> them made?
>
> tia!
> --
> Douglas Frank  Compaq Computer Corp.  Friendship, n.
> ZKO            110 Spit Brook Rd.     A ship big enough to carry two in
> 603-884-0501   Nashua, NH USA 03062   fair weather, but only one in foul.
>



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