Triumph TR6 PI Operation Manual page 381

WHEEL
TOLERANCES
Wire Wheels
Wobble
Lateral variation measured on the vertical inside face
of the rim should not exceed 0.050 in (1.27 mm).
Eccentricity
On a truly mounted and revolving wheel the
difference between the high and low points measured on
either rim ledge should not exceed 0'050 in (1"27 mm).
Disc Wheel
Wobble
Lateral variation measured on the vertical inside face
of the rim should not exeed 0 '045 in (I '143 mm).
Eccentricity
On a truly mounted and revolving wheel the
difference between the high and low points measured on
either rim ledge should not exeed 0'045 in (1'143 mm).
WHEELS
WHEEL AND TYRES
- Remove and refit
Pressed steel wheels
74.20.01
516J rims. Wheels are located and retained on the
hubs by four 7/16 UNF studs and chrome-plated dome nuts
tightened to 60 to 80 Ibf/ft (8'3 to 11'1 kgf/m).
Embellishment is provided by spring-loaded plastic hub
covers fitted under the dome nuts.
Wire wheels
516J rims, with 48 inner and 24 outer spokes. Wheel
hub extensions are fitted. The wheels are splined to the hub
extensions and are retained by a conical seating quick
release type nut. The hub extensions and quick release nuts
are screwed with right hand threads on the L.H. side of the
car and with left hand threads on the R.H. side of the car.
The quick release wheel retaining nuts are therefore
tightened when rotated against the direction of forward
wheel rotation. and slackened when rotated in the direction
of forward wheel rotation. Hub extensions must not be
interchanged left to right or vice versa.
When fitting the wire wheels to the car it is important
to ensure that the conical seats on the hub extensions, road
wheel, and retaining nuts are free of grit. Conical faces and
splines must be coated with a P.B.C. (poly Butyl Cuprasyl)
base or an equivalent high temperature, low friction
lubricant. It is necessary to ensure that wire wheels are fully
tightened before lowering the wheel to the ground.
Triumph TR6 Manual. Pan No. 545277 Issue I
Sheet 2 74.20.00
74.20.01