Triumph Spitfire MK3 Handbook page 70

With the aid of a second operator, proceed as follows:
1. Tighten the rear brake shoes hard against the drum, to reduce
the space in the cylinders.
2. Ensure that the reservoir is topped up to the level marked on
the master cylinder.
3. Wipe clean the bleed nipple and attach to it a short length of
small bore tubing. Allow the tube to hang in a clean
container partially filled with hydraulic fluid, so that its end
is below the level of the fluid.
4. Unscrew the bleed nipple one half turn.
NOTE. During bleeding, the reservoir fluid level falls
rapidly. Ensure that the level does not fall below half full, by
constantly replenishing with fluid that has been stored in a
container sealed from atmosphere. Immediately bleeding is
completed, re-seal residual fluid in the container as exposure
lowers the boiling point.
5. Operate the pedal with a succession of rapid long and short
strokes as follows: Push the pedal through its full stroke,
followed by two or three short rapid strokes; then allow the
pedal to return to its stop unaided (foot removed). Observe
the fluid being discharged into the glass container and when
all bubbles have ceased to appear, bleeding is complete.
Securely tighten the bleed screw and remove the tubing from
the nipple.
6. Top up the master cylinder with hydraulic fluid, adjust the
brake shoes, and road test vehicle.
RUNNING ADJUSTMENTS
69