Nelson Riedel wrote:
>A second problem was that the clutch had a constant squeal when engaged. A
>light pressure on the clutch pedal caused the squeal to go away. We had
>surmised that the squal was caused by the release bearing rubbing against
>the clutch diaphragm spring. Upon examination we found what appears to be
>excessive wear on the diaphragm spring. The clutch is the TRF "Magic
>Clutch" kit with 5,000 miles on it. A photo of the pressure plate and
>photos of the Toyota and standard release bearings are shown at:
>http://www.nextek.net/BuckeyeTriumphs/ToyotaRB/ToyotaRB.htm. At this rate
>of wear, the spring fingers will be gone in 25,000 miles or less.
A quick peek into the hole where my gearbox used to be confirms that
on my TR6, (which uses the SACHS pressure plate and Toyota release
bearing) there is a mark left behind where the Toyota release bearing
has contacted the diaphragm spring. However, it appears to be
superficial in my case
no depth or 'topography' to the mark at all.
This clutch has logged perhaps as much as 10,000 miles since
installation. It exhibits no squeal whatsoever in normal operation.
Considering that I've not had good luck with the OEM TO bearings over
the years, I'd just as soon risk the diaphragm spring and continue
using the Toyota bearing with no modification.
I had the same problem Nelson describes with the last clutch I had.
(squealing, etc.) It was the old Laycock style pressure plate with
the OEM TO bearing. When I finally dug into it to replace it, two
fingers were busted off and others were close to it, with a nice,
deep groove cut into them where the TO bearing had been contacting
them. The OEM bearing came apart in my hands when I slid it off of
the front gearbox cover. This particular clutch had traveled about
25000 miles as I recall.
--
Pete Chadwell
1973 TR6
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