TM 5-3895-373-20
B.
ADJUST Continued.
4.
ADJUST LEAD CROWN ON MAIN SCREED
PLATE.
Screed
operations
present
a
crushing hazard. Stay clear of screed
during screed operations. Failure to
do so may result in death or serious
injury.
NOTE
Cribbing is used under the screed
only as a safety precaution. Do not
lower the screed onto the cribbing.
Cribbing
may
have
to
be
repositioned
during
alignment
procedure to allow for placement of
straightedge
and
to
view
measurement points.
a.
Place straightedge (10) along leading edge of
main screed plate (11). Have one person
support straightedge at each end.
b.
Measure lead crown gap at center of screed
between straightedge and screed plate using a
ruler. If lead crown is between 0.06 in. (1,5 mm)
and 0.19 in. (4,8 mm), no further crown
adjustment is necessary.
c.
If lead crown on main screed plate is greater
than 0.19 in. (4,8 mm) or less than 0.06 in. (1,5
mm) refer to paragraph 15.4 for alignment of
crown adjustment assembly.
5.
MAIN AND EXTENSION SCREED TRAILING
EDGE FLATNESS WITH SCREED RAISED.
NOTE
The method of adjusting trailing
edge flatness is the same for main
and extension screed plates.
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