(9)
Insert small screwdriver into hole near each upper corner of PSU and rotate each latch one quarter turn to release (Fig. 501).
(10)
Lower PSU until unit is supported by lanyard.
(11)
Raise adjacent spacer panels and install spring pin in each inboard corner to secure panels to bridge assemblies.
(12)
Close and latch PSU (Ref Maintenance Practices).
B. Adjust PSU secured by hinged latches at inboard corners (Fig. 501).
(1)
If open, close and latch PSU and adjacent spacer panels (Ref Maintenance Practices).
(2)
Insert 1/8-inch Allen wrench into latch adjustment bolt. Access is provided through access hole in inboard corners of unit and in base of latch.
(3)
Turn bolt to raise or lower unit as necessary to produce alignment required for acceptable appearance. Remove wrench.
Aug 15/77 25-23-311 Page 507
BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details.
PASSENGER SERVICE UNITS - CLEANING/PAINTING
EFFECTIVITY
New Look Interior
1. Passenger Service Units Cleaning
A. General
(1)
It is important to use only the cleaning detergents listed below to clean passenger service units and spacer panels. Use of improper cleaning materials may cause damage (crazing or cracking) to the painted surfaces and plastic materials of the passenger service unit and spacer panels.
(2)
Before using any cleaning material not listed below submit the proposed material to a Polycarbonate Crazing Test (Ref Overhaul Manual, Chapter 20-30-03).
B. Equipment and Materials (Ref 20-30-31)
(1)
Cleaning detergent, any of the following:
(a)
High Concentrate 40.1 (Mix 1 part cleaner to 32 parts water).
(b)
Spraywhite E (Mix 1 part cleaner to 10 parts water).
(c)
Clean Quick (Mix 1 part cleaner to 64 parts water).
(d)
Orvus W.A. Paste (Mix 1 part cleaner to 30 parts water).
(e)
Glo Do-All Formula 3B (Mix 1 part cleaner to 30 parts water).
(f)
Glo Do-All Formula 1B (Mix 1 part cleaner to 20 parts water).
(2)
Clean, dry cloths or absorbent paper toweling
(3)
Plastic spray bottle or sponge
C. Clean Passenger Service Units
(1)
Apply one of detergent solutions listed in par. B by spray or by sponge dampened in solution.
CAUTION: SOME SURFACES MAY BE DAMAGED (CRACKED) BEYOND REPAIR BY USING IMPROPER CLEANING MATERIALS.
(2)
Allow detergent solution to remain on surface approximately 2 minutes then wipe with damp cloth.
(3)
Rinse surface with a clean cloth saturated with clean water.
(4)
Wipe dry with clean, dry cloth.
Nov 15/77 25-23-311 Page 701
BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details.
PASSENGER SERVICE UNITS - APPROVED REPAIRS
EFFECTIVITY
New Look Interior
1. General
A. This procedure applies to the following approved repairs of passenger service unit shells made from Polysulfone or Polycarbonate
(1)
Repair of scraped areas
(2)
Repair of cuts and gouges that do not penetrate the material
(3)
Repair of cracked areas
(4)
Repair of broken-off nondecorative sections
2. Passenger Service Units -Approved Repairs
A. Equipment and Materials
(1)
Pint or quart can with seal tight lid
(2)
Mechanical agitator
(3)
Rotary file (for repair of cracks on decorative side)
(4)
Clean dry cheesecloth
(5)
No. 400 (or finer) sandpaper
(6)
Methylene chloride
(7)
Magna 8-W-5 - Filler Compound
(8)
Magna Hardener - 50-C-3
(9)
Naptha
(10)
Strips of glass cloth, Style No. 120, Volan "A" finish (for repair of cracks and broken-off sections)
May 15/78 25-23-311 Page 801
BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details.
B. Repair Passenger Service Unit Shell
(1)
Preparation of Repair Cement
(a)
Cut or grind the same type and color of plastic to be repaired in to approximately 1/8-inch squares.
(b)
Pour, by weight, four parts of Methylene Chloride and add one part of the cut plastic into a pint or quart can (with seal tight lid) and put on mechanical agitator. Continue agitation until plastic has dissolved (approximately 20 to 30 minutes).
(2) 中国航空网 www.aero.cn 航空翻译 www.aviation.cn 本文链接地址：737 AMM 飞机维护手册 EQUIPMENT/FURNISHINGS(80)
