TM 5-3895-373-34
D.
INSTALL - Continued.
5.
COUPLE
EXTENSION
SCREED
FRAME
TO
EXTENSION SCREED BASE.
Extension screed weighs approximately 700
lbs (318 kg). Personnel shall stay clear of
objects being lifted during hoist operations.
Do not work on objects suspended by a
hoist. A swinging or shifting load may
cause injury or death to personnel.
a.
Using sling straps and overhead lifting device,
lift extension screed frame (112) just above
floor level. Adjust sling straps until both sides
of screed frame are about the same height
above floor surface.
When lowering extension screed frame onto
extension screed base, screed frame must be
tilted forward to avoid contact between
screed frame and shield bracket. If screed
frame is not tilted properly, shield bracket
will be bent or broken.
b.
Position extension screed frame (112) over
extension screed base (82). Carefully lower
screed frame over screed base. Tilt screed
frame forward to clear outermost shield
bracket (113).
c.
When beyond shield bracket (113), line up
extension screed frame (112) to clear guide
blocks on vertical adjustment block assembly
(128). Slowly lower screed frame until sides
are about 8 in. (200 mm) above floor surface.
d.
Slide guide blocks up on vertical adjustment
block assembly (128). Line up guide block
screw holes with through holes in sides of
extension
screed
frame
(112).
Thread locking compound can cause eye
damage. Wear safety goggles/glasses when
using.
Avoid
contact
with
eyes.
If
compound contacts eyes, flush eyes with
water and get immediate medical attention.
e.
Apply thread locking compound (Item 13,
Appendix B) to threads of socket head cap screws (111).
Install cap screws.
f.
Using a hex head driver socket and socket
wrench adapter, evenly tighten socket head
cap screws (111) to 30 lb-ft (41 N•m).
g.
Using overhead lifting device, raise or lower
extension screed frame (112) to align spring
pin holes in height adjustment shafts (110).
h.
Use hammer and 3/8 in. drift punch to drive
spring pins (109) to seat in height adjustment
shafts (110).
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