CLUTCH
the clutch facings, but providing the
polish on the facing remains such that
the grain of the material
can
be clearly
distinguished, it has very little effect
on clutch performance.
(c)
Should increased quantities of oil or
grease attain access to the facings, one
or two conditions or a
combination of
the two, may arise, depending on the
nature of the oil etc.
(i)
The oil may bum off and leave on
the surface facings a carbon depos-
it which assumes a high glaze and
causes slip. This is very definite,
though very
thin
deposit, and in
general it hides the
grain
of the
material.
(ii)
The oil may partially bum and
leave a resinous deposit on the
facings, which frequently produce
a fierce clutch and may also cause
a "spinning" clutch due to a ten-
dency of the facings to adhere to
the flywheel or pressure plate face.
(iii)
There may be a combination of 1
and
2
conditions, which is likely
to produce
a
judder during clutch
re-engagement.
(d)
Still greater quantities of oil produce
a black soaked appearance of the fac-
ings, and the effect may be slip,
fierceness or judder in engagement etc.,
according to the conditions. If the
conditions under
(c)
or
(d)
are experi-
enced, the clutch driven plate assembly
should be replaced by one fitted with
new facings, the cause of the presence
of oil removed and the clutch cover
housing assembly and flywheel
thoroughly cleaned.
33.
RECONDITIONING OF DRIVEN
PLATE ASSEMBLY
Whilst a much more satisfactory result is
obtained by the complete replacement of
this assembly, circumstances may force the
renewal of the clutch facings. The
after-
mentioned notes
will
prove useful.
(a)
Ensure that the metal components of
the assembly are in good condition and
pay particular attention to the follow
kg:-
(i)
Uneven spline wear.
(ii)
Cracked segments.
(iii)
Springs are not broken.
(iv)
Test the drive and over run.
(b)
Drill out the rivets securing the facings
to the plates.
(c)
Rivet the new facings onto the plate
assembly.
It
is suggested that an old
flywheel is used as an anvil and the
rivets supported by short pieces of
6"
dia. mild steel rod.
(d)
Mount the driven plate assembly on a
mandrel between the centres of a lathe
and check for
"run
out" with a dial test
indicator set as near to the edge of the
assembly as possible.
Where the run-out exceeds
.015 locate
the high spot and true the assembly by
prizing over in the requisite direction.
Care must be taken not to damage the
facings.
NOTE
:
When offering up the driven
plate assembly to the flywheel, the
LONGER side of the splined hub must
be nearer to the gearbox.
IMPORTANT
The
Borg
and Beck
Gauge
Plate
No. CG
192.
Mention of this Gauge Plate is made on Pages 1 and 11, but this
plate can no longer be purchased.
It
is possible however that
some dealers have an existing gauge of this type and for this reason
inst~ction as to its use is included.
To Next Page
Loading...
