SECTION F3
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FRAME CHECKING DIMENSIONS
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During the course of an accident repair, the
frame must be examined most carefully for damage to
tubes, welds and fixing lugs. It is then essential
to check for distortion and misalignment. Fig. F4
shows the Commando frame measurements which should
be used to establish whether or not damage has
occurred. However, before stripping out the frame
from the motorcycle, one quick visual check can be
made on vertical alignment at the
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steering head tube after removal of the front
fork assembly. This is accomplished by a long tube
(approximately 4 ft. (121 cm) ) inserted as a tight
push fit through the steering head races. Viewed
from the front, the tube should be seen to be
perfectly alignad to the motorcycle centre line.
Severe damage will immediately be shown up by this
method and will obviate unnecessary dismantling at
the estimating stage.
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It is recommended that the frame is checked more
accurately when removed from the motorcycle, to the
dimensions given in the checking chart.
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