Triumph TR2 Service Instructions Manual page 244

WHEELS
AND
TYRES
Final tightening should be done pro-
gressively and alternately by short turns of
opposite nuts to ensure correct seating and
to avoid distortion.
Wheels with damaged or elongated stud
holes, resulting from slack nuts, should be
replaced.
Rim seatings and flanges in contact with the
tyre beads should be free from rust and
dirt.
WIRE WHEELS (Fig 18)
See
"
Front Suspension and Steering
"
Section also
"
Rear M e
"
Section for
special hubs.
(a) To Remove Wheels
Jack up the car.
With a copper headed mallet
tap the lugs of the hub cap in
the direction stated thereon
:--
UNDO->UNDO
RIGHT SIDE ,hand side
[of car.
Caps fitted
UNDO<-UNDO
LEFT SIDE hand side
[of car.
(iii) By gripping the tyre with both
hands the wheel
can
be pulled off
the hub.
(b) To Replace Wheels
(i) Lightly grease the splines of the
hub, and the thread of the hub
cap-
(ii) Slide wheel on to hub and secure
the hub caps.
(iii) Tap the lugs of the cap with
the copper headed mallet to secure
the wheel.
RIGHT-HAND SIDE CAPS
A R E T U R N E D A N T I -
CLOCKWISE T O TIGHTEN.
LEFT-HAND SIDE CAPS
ARE TURNED CLOCKWISE
T O TIGHTEN.
(iv) Remove jacks.
(c) Examination
This should be done periodically every
5,000 miles or at more frequent inter-
vals if the car is used for competition
driving or racing.
After cleaning the wheels they should
be examined for faults paying par-
ticular attention to the following
:-
(i) Spokes
Looseness
can
be corrected and
damaged spokes replaced but care
must be taken to ensure that the
position of the rim relative to the
hub shell is not disturbed (Fig.
19).
No undue load must be placed on
any one spoke and all spokes must
be under the same relative tension.
The correct tension is that that
will give a flexible but strong
wheel. If the tension is too high
the wheel will become rigid and
loose its advantage over the disc
wheel. Or, if too loose, undue
strain will be placed on the spokes
resulting in breakages.
This tension can be ascertained by
drawing a light spanner or similar
metal object across the spokes.
When the spokes are correctly
tensioned they will emit a "ringing
note", however, if the spokes are
slack the "ring" will be flat.
Spoke tensioning is best carried
out with the tyre and the tube re-
moved and any protruding spoke
heads filed off flush to the nipple.
Note-The building of wire wheels is a
specialised trade and this Company
and the wheelmanufacturers advise
that a wheel specialist is consulted
if the condition of the wheel is in
doubt.
Hub Shells. The splines should
be examined for wear, this is often
caused by looseness of the wheel
on the axle hub. Excessive wear
on these splines will mean the
replacement of the hub shell.
Rust caused by water entering
from outside should be cleaned off
and a smear of grease used to
protect the interior of the shell
and ease the fitting and removing
of the wheel from the axle hub.