Subject: [TR] No brakes, 64 TR4

From: Paul Willoughby <[email-masked]>
Date: Wed, 29 Jul 2015 08:31:32 -0700

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Haven't driven the TR4 in a few years other than an occasional trip around
the block every 6 months or so.  Last weekend I started it and drove it up
the hill to the stop sign.  Uh oh, no brakes, (maybe 25% stopping power).
Was able to coast down the hill using the e-brake with a little assist from
the pedal.

When I had started it, the brakes felt firm.  I had pumped them a couple
times to make sure they worked.  I might have been a little over zealous
and may have felt a pop or a snap on the last pump.  I don't drive the car
enough to have a feel for it anymore.  But now the pedal isn't as firm.

Fluid reservoir was fine, maybe 3/4" low. I rebuilt the master cylinder
years ago and changed to silicon fluid.

Can anyone steer me in the right direction for a diagnosis?  I was thinking
broken spring in the master cylinder, but Moss doesn't list one, not even
in the rebuild kit, so must not be a common failure.  Could I have pushed
the little rubber plungers in the master cylinder past their stop point?

paulw
56 TR3
64 TR4

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<div dir=3D"ltr"><div>Haven&#39;t driven the TR4 in a few years other than =
an occasional trip around the block every 6 months or so.=C2=A0 Last weeken=
d I started it and drove it up the hill to the stop sign.=C2=A0 Uh oh, no b=
rakes, (maybe 25% stopping power).=C2=A0 Was able to coast down the hill us=
ing the e-brake with a little assist from the pedal.</div><div>=C2=A0</div>=
<div>When I had started it, the brakes felt firm.=C2=A0 I had pumped them a=
 couple times to make sure they worked.=C2=A0 I might have been a little ov=
er zealous and may have felt a pop or a snap on the last pump.=C2=A0 I don&=
#39;t drive the car enough to have a feel for it anymore.=C2=A0 But now the=
 pedal isn&#39;t as firm.</div><div>=C2=A0</div><div>Fluid reservoir was fi=
ne, maybe 3/4&quot; low. I rebuilt the master cylinder years ago=C2=A0and c=
hanged to=C2=A0silicon fluid.=C2=A0 </div><div>=C2=A0</div><div>Can anyone =
steer me in the right direction for a diagnosis?=C2=A0 I was thinking broke=
n spring in the master cylinder, but Moss doesn&#39;t list one, not even in=
 the rebuild kit, so must not be a common failure.=C2=A0 Could I have pushe=
d the little rubber=C2=A0plungers in the master cylinder past their stop po=
int?</div><div>=C2=A0</div><div>paulw</div><div>56 TR3</div><div>64 TR4</di=
v></div>

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