Abrams SC-1, Техническое руководство

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DISASSEMBLY, INSPECTION, REPAIR, REASSEMBLY
c.
If
the
level
vial is broken, replace the level vial
and casing
assembly as
a
unit.
4.
ASSEMBLY.
a.
Place the frame and
trunnion
assembly (item
17)
in
the
support (item 18), insert the hex-head bolts (item
20)
with
the
heads inside the frame, seating the heads
in
the
cap-screw locks
(item
16)
and placing
the
fibre washer (item
19)
on the bolts
between the
support and frame and
trunnion assembly.
Place
the
lock washers (item
21) on
the bolts next, then the
plain
washers (item
22)
and screw the
wing
nuts (item
23)
onto
the
bolts.
6.
Place
one end
of the giiubal arm (item
10)
and bearing
assembly (item
11) on
the small
trunnion
welded to the frame.
Insert
the hex -head bolt (item
20)
through
the
other hole in
the
frame and gimbal arm
with
the head inside the frame,
seating
the
head
in
the cap screw lock (item 16).
Then install
the
lock washer (item 21),
plain
washer (item
22)
and screw
on
the
wing
nut (item 23).
o.
Secure
the
protractor
plate (item 0)
to
the gimbal arm and
bearing assembly,
if
removed,
with
two flat-head screws (item
15).
d.
Place
the
shadow
bar
washer (item
6),
shadow bar (item
5),
and shadow bar bearing (item 4) on the pivot bolt (item 3)
and
after
placing the solar plate (item
7)
and date
bar
(item
8) on
the
protractor
plate, line up
the
holes and
insert
the
pivot bolt through the solar plate, date bar, and bearing
on
the gimbal arm.
e.
Place
the clamping nut spring (item 1)
in
the recess
in
the nut and screw the clamping nut (item 2)
on
the pivot bolt
on the
underside
of
the compass.
/.
Screw
the
gnomon rod into the head
of
the
pivot bolt and
the
sighting rod into the gimbal arm. This
completes the re
assembly of the sun
compass.
23