Vibration Symptom and Maintenance Action - In-flight Vibration
Figure 201 (Sheet 4)
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
05-51-67
ALL ú ú 01 Page 208 ú Nov 12/99
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
H51722
A 737-300/400/500MAINTENANCE MANUAL
Vibration,
no identified
source, location,
or direction.
Flaps Up.
(Cont)
Moderate vertical vibration in aft and forward fuse-lage. Flaps up.
Vibration present (Cont)
10.
Air conditioning pack "off'
11.
Bleedair valves "off"
12.
Electrical generators "off"
13.
If no source has been identified, terminate flight and monitor vibration in revenue service.
Check for free-play in elevator tab (AMM 27-09-91/401, AMM 27-31-31/401, S/B 737-SL-55-9-A, S/B 737-55-1040).
Malfunction assoc-iated with ACS
Malfunction assoc-iated with bleedair
Malfunction assoc-iated with generator(s)
Loose or worn tab
rod ends. Loose,
worn, or missing
rod end bolts,
and/or rod end
locknuts
Loose or worn tab
linkage bearings,
bushings, and/or
bolts.
Loose tab hinge
fitting, tab mast
fitting, due to
loose fasteners
and/or worn holes. Tab mast and hinge fittings are attached directly to the tab and elevator rear spar with screws and nut plates through the spar flanges.
Repair Repair Repair
Contact Boeing Service Engineering for assistance.
Remove panels on lower side of stab-ilizer and inspect for worn or missing parts. Replace worn or missing parts. Replace locknuts and torgue bolts (AMM 27-31-00/ 201 and S/B 737-55-1040).
Replace worn parts. Torque all bolts.
Remove tab and repair.
Vibration Symptom and Maintenance Action - In-flight Vibration
Figure 201 (Sheet 5)
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
05-51-67
ALL ú ú 01 Page 209 ú Nov 12/99
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
H51958
A 737-300/400/500MAINTENANCE MANUAL
3PROBLEM ISOLATION PROCEDURE PROBABLE CAUSE REMEDY
Moderate vertical _________________Vibration present
vibration in aft (Cont)
(Cont) lage. Flaps up. and forward fuse- (AMM 27-09-91/401, in elevator tab Check for free-play on hinge fitting insufficient torque Loose or worn or fitting bolts. Torque all hinge Replace worn parts.
AMM 27-31-31/401, bolts
S/B 737-55-1040,
S/B 737-SL-55-9-A.
1 (Cont)
Check for free-play
in elevator
(AMM 27-09-91/401).
1
If only one elevator
exceeds free-play
limits, check the
following on that
elevator:
Check hinges by Worn or defective Repair or replace
placing elevator elevator hinge bear- worn or defective
in neutral position ings and/or bearings and/or
and apply a "shake" fittings. Worn or fittings. Torque
force at the hinge loose hinge fitting all hinge fitting
positions. bolts bolts
(AMM 27-31-31/401).
Check elevator hinge Worn or defective Replace seals.
seals. seals
Check elevator Loose or worn Repair or replace
balance, panel hinge elevator balance worn or loose parts.
fittings and bolts. panel hinge fittings Torque all balance
and/or hinge bolts panel hinge bolts
(AMM 27-31-41/401).
Check elevator mast Worn or defective Repair or replace
arm bearing. elevator mast arm (AMM 27-31-00/401).
bearing and/or
fitting
Check elevator Worn or defective Replace worn or
push-rod bearing elevator push-rod defective parts
and hardware. bearings, bushings, (AMM 27-31-00/201).
bolts, and/or
locknuts
中国航空网 www.aero.cn
航空翻译 www.aviation.cn
本文链接地址：737-300 400 500 AMM 飞机维护手册 TIME LIMITS/MAINTENANCE CHE(66)
