0.19 +0.09/-0.006 inch. Install cotter pins.
NOTE: If vertical adjustment nuts are hard to turn, use wrench F70085 to rotate nuts. Avoid overtightening of nuts, which would cause excessive end loads on bearings (14).
(c) Install adjustable roller fitting (2, Detail A) on door and adjust position to allow engagement of centering guide (5) with centering track (4) on doorjamb.
(3) Adjust the following to fair door with fuselage external profile.
NOTE: Measurements of flushness should only be made at points along straight sections between rounded corners of door skin. Measure between door outer skin and normal body outer skin surface. Measurements at skin splices must subtract the additional skin and bonding film thickness.
(a)
Adjust forward and aft latch cam fittings (24, Detail E) on serrated latch plates attached to doorjambs so that when door is closed and latched, outside surface of door along forward and aft edges is flush with fuselage external profile within flushness requirements called out in Fig. 502. Check that all latch rollers enter latch cam fittings with equal clearance when door is operated to closed position.
(b)
Adjust the upper and lower gate control rods (Fig. 501) so that with door closed and latched, the outside surface of the upper and lower gates are recessed below the fuselage exterior profile as shown in Fig. 502.
(4)
Adjust guide arm (21, Fig. 501, Detail D) length so that both fore and aft latch rollers enter their fittings at the same time when door is closed. If necessary, aft rollers may lead forward rollers slightly to improve clearance on forward edge of door. Adjust guide arm as follows:
(a)
If necessary, make coarse adjustment. Remove four bolts holding attach fitting (17) to hinge support (18). Loosen rod end bearing checknut (20), rotate rod end bearing (19), then tighten checknut. Install attach fitting (17).
(b)
Make fine adjustment. Remove keeper channel (23) and loosen checknut (20). Rotate adjustment-fitting (22). Tighten checknut and install keeper channel.
(5)
Using index hole through door roller cam crank (28, Detail E, Fig. 501) and into support fitting (29), check latch roller (23) engagement with latch roller cam fitting as follows:
(a)
With pushrod (12, Detail C) disconnected from torque tube crank, operate interior handle to closed position.
(b)
Check that rig pin can be inserted through door roller cam crank and into support fitting. If necessary to get rig pin insertion, disconnect both upper and lower control rods (31 and 32, Detail C). Adjust control rod length to allow bolt insertion through rod ends.
(c)
With mechanism in closed position, check that latch rollers engage latch roller cam fittings with no interferences. Clearance between the stop pin and stop fitting pad must be 0.015-0.030 inch.
(d)
Check that width of contact surface between latch roller and latch cam is 0.25 inch minimum (Detail F).
(6)
With door closed and latched, screw adjustable stop pins (26, Detail E) out until stop pins just contact stop buttons on frame stop fittings (22). Back off stop pins half a turn, then further to nearest locking groove and lock with lock springs (27). Check that stop pins contact frame stop buttons within limits shown in section A-A. Check may be made by using modeling clay or any other approved method.
(7)
With door closed and latched, adjust length of pushrod (12, Detail C) so that pushrod just fits between door cocking crank (11) and torque tube crank (15). Then unlatch door, shorten pushrod by one-half turn of rod end bearing, tighten check nut and reinstall.
(8)
Check roller engagement with each latch fitting to verify that roller clears entry lip on latch fitting when handle is moved to latched position. Check clearance at each latch consecutively with 10 +1 pound spring load, or equivalent applied to door in an inboard direction at adjacent corner stop pin fitting while latching. If necessary, adjust by shortening pushrod (12) an additional 1/2 to 1-1/2 turns, as required, to move door outboard to provide roller clearance. After adjustment, check that force required to move handle from extended to retracted position does not exceed 20 pounds.
(9)
With door latched in open position, check length of snubber to make sure it does not bottom before latch pin engages hole in upper roller guide plate at upper hinge assembly. If necessary, adjust snubber (7, detail B) length at rod end bearing (9) by removing snubber attachment bolt (10) connecting snubber to radius link (6). Tighten rod end bearing checknut (8) and reinstall.
(10)
Check that gap between door outside skin and fuselage outside skin is 0.09 +0.09/-0.03 inch at sides and lower sill when door is closed and latched. Where necessary, trim edge of door skin to achieve this condition (detail F).
中國航空網 www.k6050.com
航空翻譯 www.aviation.cn
本文鏈接地址：737 AMM 飛機維護手冊 艙門 DOORS(107)
