LOWER MOUNT INSTALLATION PROCEDURES
SHIPS LADDER INSTALLATION
1. Attach hoist to ships ladder (see Figure 2-5).
2. Lift ships ladder into position in the stair opening (across the mount
from door opening).
3. Align three top mount holes at top of ladder with stairway header beam
holes.
4. Secure three places with screw, two flat washers, and nut (item 103,
104, and 105). Hand tighten.
5. Mark position on concrete where two holes on stair bottom mount meet
concrete floor.
6. Remove three bolts, washers, and nuts that secure ships ladder to
stairway header beam and lift ships ladder away from marked concrete
area.
7. Drill two 3/4-inch by 4-inch deep holes into concrete at marked
locations.
8. Insert expansion bolt (item 106) into expansion bolt holes and remove
nut and washer. (Retain these for use in step 10.)
9. Place ships ladder back in position and repeat step 4.
10. Secure bottom mount angles to concrete using the two nuts and washers
removed in step 8.
11. Level tread plate and torque bolts in slotted hole of bottom mount angle
to 260 ft-lbs (353 Nm).
12. Torque bolts in top of ships ladder to 260 ft-lbs (353 Nm).
13. Remove hoist from ships ladder.
14. Attach hoist to mezzanine guard rail (item 21, Figure 2-4).
15. Lift guard rail into position on mezzanine stairway opening beam.
16. Align guard rail bottom plate holes with holes in stairway opening beam
four places on each guard rail bottom plate.
17. Secure guard rail bottom plate to stairway opening beam with screw,
two flat washers, and nut (item 104, 102, and 101) 16 places.
18. Remove hoist from mezzanine guard rail.
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42S183D
SERIES 8116/8118 16-/18-METER EARTH STATION ANTENNA
2-19
Содержание 8116 Series
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