Triumph 1978 - Brake Burnishing Procedure

The following i nformation is in ac co rdance with the requirements of
t he U. S. National Highway Tr ~ ffic Sa fe ty Admin!str . ~ion . Department
of Transportation .
BRAKE BURNISHING PROCEDURE
Brakes should be bedded in progressively during the first 300 miles. This
IS done gradually by increasing brake lever pressure during the period,
and braking from progressively increasing speeds.
For guidance refer
to the table below. The deceleration in ft/sec
2
IS
converted to the equivalent braking time/distance.
Stage 1
2
3
Speed of commencement of stage
(m.p.h.)
.. . .. ....................... .... ........................... .
30 50
70
Speed at end of stage (m.p.h .) ... .. ..................... ..
0 30
30
Deceleration (f tl sec
2
) .
.. ....... .... ......... ... . .............. . .
12.5 12 .5
12.5
Distance travelled
(ft.) .......... .. .. ..... , .......... .. .. .. .... ..
77
135
344
Time taken (sec) .. .. .. .......................................... ..
3.5
2. 3
4.7
S ta ge 1
A minimum of 20 stops using th e front and rear brakes together.
Decelerate f
ro m 30m.p.h. to rest us i ng the distance travelled or time
taken to obtain
th e requi re d deceleration.
Stage 2
A
minimum of 50 declerations from 50 to 30 m.p.h. using fr ont and rear
brakes together.
Stage 3
A
minimum of 30 decelera ti ons from 70 to 30 m.p.h. u sin g front and re ar
brakes together.
The distance between brake applications should not
be less than V4 m il e
in each case.
Di sengage the clutch wh en carryi ng out the procedure to
ensure that the brakes receive
the full br ak ing load.
The use of the above procedure, subject
to traHic condrtlons will ensu re
that any high spots on the brake linings are not hardened. resulting in
reduced brake efficiency. Correct burnishing will give an ap p rox imate
minimum lining contact area of
50% which qualifies the pu blished brake
performance figures.
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