anchor plate.
S 825-021
(11)
Adjust the door stop pins (Fig. 503).
(a)
Diconnect the upper and lower gate pushrods.
NOTE: Do not change the adjustment of the gate pushrods.
____
CAUTION: MANUALLY LIFT THE LOWER GATE WHEN YOU CLOSE THE DOOR WITH
_______ THE LOWER PUSHROD DISCONNECTED. DO NOT TRY TO CLOSE THE DOOR WITH THE LOWER GATE DOWN. THIS CAN CAUSE DAMAGE TO THE SPLINE TORQUE SHAFT ON THE GIRT BAR MECHANISM.
(b) Manually lift the lower gate and close and latch the door.
NOTE: You can use a flexible cord to keep the lower gate in
____
the up position.
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0.35 |0.15 INCH
SEAL DEFLECTION
BODY
DOOR
INBD INBD
A-A
STOP PIN LOWER
THE ACTUAL CLEARANCE BETWEEN THE STOP PIN AND GATE
STOP PAD.
THE THICKNESS OF THE CLAY IMPRESSION AFTER
YOU CLOSE AND OPEN DOOR. USE CLAY TO
DO A CHECK OF THE CLEARANCE OF THE STOP PIN
THAT YOU CAN NOT GET ACCESS TO.
0.007
MEASURE THE CLEARANCE WITH THE UPPER AND INCH
0.001
LOWER GATE PUSHRODS DISCONNECTED.
MEASURE THE CLEARANCE WITH THE UPPER AND LOWER SCUFF PLATE
GATE PUSHRODS CONNECTED.
B-B
Door Stop and Seal Deflection Adjustment
Figure 503
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(c) Turn each stop pin on the vertical sides of the door outboard until they touch the stop pad, then loosen the stop pin one-half turn.
(d) Open the door and turn each stop pin until a groove in the pin aligns with the closest groove in the stop fitting bushing.
NOTE:____ Do not turn the stop pin more than 30 degrees.
(e) (f) Install the locking clips on the door stop pins.Connect the upper and lower gate pushrods.
NOTE:____ Do not change the adjustment of the gate pushrods.
(g) Adjust the stop pins on the lower gate. 1) Adjust the stop pins on the lower gate to get a clearance of 0.001 to 0.007 inch between the stop pin and the stop pad. 2) Open the door and turn each stop pin until a groove in the pin aligns with the closest groove in the stop fitting bushing.
NOTE:____ Do not turn the pin more than 30 degrees.
(h) (i) 3) Install the locking clips on the stop pins. 4) Apply sealant on the inboard side of the lower gate stop pins.Make sure the latch and unlatching torques are correct.Make sure the stop pins do not contact the stop pads when you latch the door.
S 425-042
(12)
Install and tighten the nuts on all of the pushrod bolts.
S 425-043
(13)
Make sure all the jamnuts on the pushrods are tight.
S 425-044
(14)
Install and adjust the upper and lower hinge covers.
(a)
Install the hinge covers.
(b)
Make sure there is no debris, such as nuts or bolts, in the hinge cavity.
(c)
Close and latch the door. 1) Make sure the clearance between the covers and the body skin is 0.09 inch minimum. 2) Make sure the clearance between the forward and center covers is 0.05 inch minimum.
3) Make sure the clearance between the covers, adjacent fasteners, and cam plates is 0.05 inch minimum.
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CAUTION: DO NOT BEND THE TORSION SPRING TO CHANGE ITS SHAPE. 中国航空网 www.aero.cn 航空翻译 www.aviation.cn 本文链接地址：747-400 AMM 飞机维护手册 舱门 DOORS 1(77)
