B.
Standard Tools and Equipment
(1)
Rigging pin ND-3, 0.250 (| 0.005)-inch diameter, 2 inches long (2 required)
C.
References
(1)
52-31-02/401, Nose Cargo Door Linear Actuator
D.
Access
(1)
Location Zones
801 Nose Cargo Door
E.
Prepare For Removal
S 864-002
(1)
Make sure the nose cargo door is closed.
S 864-003
(2)
Open these circuit breakers and attach the DO-NOT-CLOSE tags:
(a)
On the Auxilary External 2 Power Center-Right panel P715: 1) 715XX, NOSE CARGO DOOR
(b)
On the Power Distribution Center-Right panel P415: 1) 415F16, NOSE CARGO DOOR CONTROL
F.
Flexible Drive Shaft Removal
S 034-004
(1) Remove the clamps.
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52-31-04
ALL ú ú 02 Page 401 ú Feb 10/94
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
FLEXIBLE
DRIVE SHAFT
SEE A
FLEXIBLE DRIVE SHAFT
DRIVE UNIT
FWD
CLAMPS
DRIVE SHAFT LINEAR
DRIVE SHAFTCOUPLINGS ACTUATOR
COUPLING
SEE C
SEE B
FLEXIBLE DRIVE SHAFT
A
LINEAR
DRIVE UNIT
ACTUATOR
ELECTRICALSUPPORTDRIVE SHAFT PLUG (REF)COUPLING (REF)
DRIVE SHAFT COUPLING (2 LOCATIONS)
BOLT
60B80017-3
NUT
WASHER
(2 LOCATIONS)
DRIVE SHAFT COUPLING
ON LINEAR ACTUATOR
BOLT
FLEXIBLE NUT
B DRIVE SHAFT WASHER
(2 LOCATIONS) DRIVE UNIT (2 LOCATIONS)
DRIVE SHAFT COUPLING ON DRIVE UNIT
NOTE: RIGHT DRIVE SYSTEM SHOWN, C LEFT DRIVE SYSTEM OPPOSITE.
Flexible Drive Shaft Installation
Figure 401
B26904
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52-31-04
ALL ú ú 02 Page 402 ú Feb 10/94
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400
MAINTENANCE MANUAL
S 034-005
(2)
Remove bolts from couplings to disconnect the forward and aft ends of the drive shaft from the drive unit and the linear actuator.
S 864-006
(3)
Attach DO-NOT-OPERATE tags to the drive unit and the linear actuator.
S 024-007
(4)
Remove the flexible drive shaft.
TASK 52-31-04-404-008
3. Nose Cargo Door Flexible Drive Shaft Installation (Fig. 401)
_________________________________________________
A. Special Tools and Equipment
(1)
MIT65B80430 - Alternate Drive Extension, Nose Door Lift Actuator
B.
Standard Tools and Equipment
(1)
Rigging pin ND-3, 0.250 (| 0.005)-inch diameter, 2 inches long (2 required)
C.
References
(1)
AMM 24-22-00/201, Manual Control
(2)
AMM 52-31-02/401, Nose Cargo Door Linear Actuator
D.
Access
(1)
Location Zones
801 Nose Cargo Door
E.
Flexible Drive Shaft Installation
S 864-009
(1)
Make sure these circuit breakers are open with the DO-NOT-CLOSE tags attached:
(a)
On the Auxilary External 2 Power Center-Right panel P715: 1) 715XX, NOSE CARGO DOOR
(b)
On the Power Distribution Center-Right panel P415: 1) 415F16, NOSE CARGO DOOR CONTROL
S 424-010
(2)
Connect the forward and aft ends of the flexible drive shaft to the drive unit and linear actuator with bolts, washers, and nuts.
(3)
Install the clamps.
S 864-011
(4)
Remove the DO-NOT-OPERATE tags from the drive unit and the linear actuator.
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