(d)
Put a 5/16-inch hex wrench into the latch socket (Section D-D).
(e)
Push the hex wrench and turn it clockwise until the latch hook is tightly engaged in the latch eye bolt.
(f)
Repeat steps (d) and (e) for the five remaining latches.
TASK 53-52-01-002-020
4. Nose Radome Removal
___________________
A. Special Tools and Equipment
(1) 2OHME65B07930 Sling - Nose Radome Overhead Mechanical Equipment
B. Standard Tools and Equipment
(1) Lift - Mobile Mechanical (or equivalent overhead crane)
NOTE: The lift must extend to a height of 26 feet and lift 200
____
pounds.
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A
747-400
MAINTENANCE MANUAL
C. References
(1) IPC 53-52-04 Fig. 1
D. Access
(1) Location Zone
111 Radome
E. Procedure
S 012-006
(1)
Open the nose radome (Ref par. "Nose Radome Opening").
S 492-007
(2)
Install the sling around the nose radome and attach the sling to the lift or crane (Fig. 202).
S 022-008
(3)
Remove the nose radome:
(a)
Remove the cotter pin, nut and washers to disconnect the guide links (1 and 11) from the guide link fitting on the nose radome (Fig. 201, Detail C-C).
(b)
Disconnect the top and lower hinge arms from the hinge arm fittings on the nose radome: 1) Remove the cotter pin, nut and two washers (Fig. 201,
Section B-B) from the top and lower hinge arm fittings. 2) Loosen the bolts through the cap without a key on the lower
hinge arm. 3) Remove the cap (9) with a key (26) on the lower hinge arm. 4) Lift the lower hinge arm (10) along the torque tube (7) and
remove the hinge arm from the stud on the hinge arm fitting (Section B-B). 5) Lift the nose radome to lift the stud out of the bearing on the top hinge arm.
(c) Remove the nose radome from the airplane.
TASK 53-52-01-402-019
5. Nose Radome Installation (Fig. 201)
________________________
A. Special Tools and Equipment
(1) 2OHME65B07930 Sling - Nose Radome Overhead Mechanical Equipment
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A
747-400
MAINTENANCE MANUAL
SLING
RADOME (REF)
Sling Installation
Figure 202
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B.
C.
D.
E.
F.
A
747-400 MAINTENANCE MANUAL
Standard Tools and Equipment
(1) Lift - Mobile Mechanical (or equivalent overhead crane)
NOTE:____ The lift must extend to a height of 26 feet and lift 200
pounds.
(2) Meter - Bonding (Ref 20-22-01/601)
Consumable Materials
(1)
E00000 - Abrasive Paper
(2)
G00000 - Putty or equivalant materialReferences
(1)
20-22-01/601, Electrical Bonding
(2)
53-52-01/701, Nose Radome
(3)
IPC 53-52-04 Fig. 1Access
(1)
Location Zone 111 Radome
Procedure
S 372-010
(1)
If a new nose radome will be installed, apply the erosion protection to the radome if it is necessary (Ref 53-52-01/701).
S 492-011
(2)
Install the sling around the nose radome and attach the sling to the lift or crane (Fig. 202).
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