TM 5-3895-373-20B. ADJUST Continued.4. ADJUST LEAD CROWN ON MAIN SCREED PLATE.Screed operations present acrushing hazard. Stay clear of screedduring screed operations. Failure todo so may result in death or seriousinjury.NOTECribbing is used under the screedonly as a safety precaution. Do notlower the screed onto the cribbing.Cribbing may have to berepositioned during alignmentprocedure to allow for placement ofstraightedge and to viewmeasurement points.a.Place straightedge (10) along leading edge ofmain screed plate (11). Have one personsupport straightedge at each end.b.Measure lead crown gap at center of screedbetween straightedge and screed plate using aruler. If lead crown is between 0.06 in. (1,5 mm)and 0.19 in. (4,8 mm), no further crownadjustment is necessary.c.If lead crown on main screed plate is greaterthan 0.19 in. (4,8 mm) or less than 0.06 in. (1,5mm) refer to paragraph 15.4 for alignment ofcrown adjustment assembly.5.MAIN AND EXTENSION SCREED TRAILINGEDGE FLATNESS WITH SCREED RAISED.NOTEThe method of adjusting trailingedge flatness is the same for mainand extension screed plates.GO TO NEXT PAGE15-139
Integrated Publishing, Inc. - A (SDVOSB) Service Disabled Veteran Owned Small Business
