The drain valve is pretty sturdy and it should have a fiber washer between it
and the block. So it should come loose with a quick "surprise" twist of a
wrench.
Dave H.
----- Original Message -----
From: "Allen Hess" <allenhess@mgcarclub.com>
To: triumphs@autox.team.net
Sent: Sunday, May 19, 2013 5:19:58 PM
Subject: Re: [TR] TR3/TR4 block drain valve?
The block drain valve is the same as the radiator drain valve (or
should be) and you can get a much better look at that one. I recall it
being substantial enough that it should come out without much trouble
but the usual "proceed with caution" applies. I think it is more
likely that the drain lever will be stuck. It is a taper held in the
body with a spring, washer and cotter pin. You may be able to tap it
from underneath and free it. Removing the valve from the block
provides a larger hole for the crud to come out and you can bend a
stiff wire (coat hanger) to loosen the crud towards the rear of #4
cylinder. As usual, been there, done that.
Allen
On May 19, 2013, at 2:00 PM, triumphs-request@autox.team.net wrote:
> How sturdy are the block drain valves? The one on my TR4 is
> clogged. I've
> been hesitant to remove it, fearing that it would crumble into
> pieces and
> screw up the threads. Too many bad adventures with home plumbing
> have left
> me gun shy.
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