(2)
Micrometer - 1 to 2 inch (2 to 5cm), inside measuring
(3)
Micrometer - 1 to 2 inch (2 to 5cm), outside measuring
(4)
Vernier Caliper
(5)
Dial Indicator
B.
References
(1)
27-51-03/401, Aftflap - Inboard
C.
Access
(1)
Location Zone
578 Inboard Flap Aftflap, LH
678 Inboard Flap Aftflap, RH
D.
Procedure
S 026-002
(1)
Remove the inboard aftflap (Ref 27-51-03/401).
S 226-003
(2)
Measure the parts which connect the inboard aftflap for worn areas.
(a)
Remove the parts.
(b)
Use a micrometer or a vernier caliper to measure the parts.
(c)
Compare the dimensions that you measured with the permitted dimensions shown in Fig. 601.
(d)
Repair or replace the parts that are not in the tolerance as shown in Fig. 601.
(e)
Install the parts.
S 226-004
(3)
Measure the axial play in the inboard aftflap bearing.
(a)
Disconnect the parts to examine the axial play.
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
27-51-03
ALL ú ú 01 Page 601 ú Jun 18/00
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
(b)
Attach a dial indicator.
(c)
Measure the axial play.
(d)
Compare the axial play which you measured to the permitted axial play as shown in Fig. 601.
(e)
Replace the bearings which are not in the tolerance.
(f)
Connect the items which you disconnected.
S 426-005
(4) Install the inboard aftflap (Ref 27-51-03/401).
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
27-51-03
ALL ú ú 01 Page 602 ú Oct 10/90
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400
MAINTENANCE MANUAL
MIDFLAP FWD A A AFTFLAP
1. BUSHING/PIN 7. BOLT 2. BUSHING/ SPINDLE 3. BEARING
6. BUSHING/PIN 5. BEARING/ A-A (4 LOCATIONS) SPINDLE 4. BEARING
Inboard Aftflap Wear Limits Figure 601 (Sheet 1)
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
27-51-03
ALL ú ú 01 Page 603 ú Jun 10/90
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400
MAINTENANCE MANUAL
1 INDEX NO. PIN BUSHING PART NAME DIM. ID OD (cm)(cm) MAXIMUMMINIMUM 1.1862 1.1867 1.1875 1.1880 INCHES INCHES DESIGN LIMITS DIAMETER (3.014)(3.013) (3.018)(3.016) (cm) DIMENSION 1.1807 1.1935 PERMITTED INCHES WEAR WEAR LIMITS (2.999) (3.031) (cm) CLEARANCE 0.0068 MAXIMUM DIAMETER INCHES (0.017) PART WORN REPLACE X X PART WORN REPAIR REPAIR INSTR
2 SPINDLE BUSHING ---- (6.629)(6.617) (0.239)(0.226) 2.6102.605 0.0940.089 2 2 1 1 (0.201) 0.079 3 1 (AXIAL) 0.032 (0.081) X X 4
3 BEARING ID ODX XX X 0.010 5 (0.025) X
4 BEARING OD ID X XX X 0.010 5 (0.025) X
5 SPINDLE BEARING ID OD 2.249 2.251 2.253 2.256 (5.718)(5.712) (5.730)(5.723) 2.261 3 (5.743) 0.010 (0.025) X X 4
6 BUSHING PIN ID OD 1.1875 1.1880 1.18671.1862 (3.014)(3.013) (3.018)(3.016) 1.192 1.181 (2.300) (3.028) 0.005 (0.013) X X
7 BOLT ID OD X (0.632) (0.634) 0.24950.2490 XX (0.584) 0.230 X X 6
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 飞行操纵 FLIGHT CONTROLS 4(94)
