(2)
Masking Tape (20-30-51)
(3)
Aliphatic Naphtha, TT-N-95A, Type II (20-30-31)
NOTE: Freon TF may be substituted for Aliphatic Naptha.
____
(4)
Corrosion preventive compound MIL-C-11796, Class 3 (20-30-11)
(5)
Nylon cord, MIL-C-5040, Type 1A, or Nylon Thread, V-T-295a, Type I, Class 2, No. 9 (20-30-51)
(6)
Aerodynamic smoother, BMS 5-95 Class B, or Pro Seal 860 Class B (20-30-11)
(7)
Cheesecloth, lint and oil free (20-30-51)
C. References
(1)
AMM 25-11-21/201, Flight Compartment Lining and Insulation
(2)
AMM 30-41-00/501, Control Cabin Window Anti-Icing System
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737-300/400/500MAINTENANCE MANUAL
(3) AMM 30-41-31/401, Window No. 3 and No. 5 Thermal Switches
D. Access
(1) Location Zones
101, 102 Control Cabin
E. Window No. 3 - Prepare for the Installation
S 954-015-B00
(1) Apply the protective tape to the two window surfaces.
NOTE: Apply the tape aligned with the edges of the glass panes if
____
the tape is not installed.
S 114-004-B00
WARNING:_______BE VERY CAREFUL WHEN YOU USE THE ALIPHATIC NAPHTHA. ALIPHATIC NAPHTHA IS FLAMMABLE AND CAN CAUSE INJURY TO PERSONS AND DAMAGE TO EQUIPMENT.
(2) Clean these surfaces with the aliphatic naphtha:
NOTE: Use a clean cheesecloth to apply aliphatic naphtha and a
____ clean cheesecloth to remove it. Do not permit the aliphatic naphtha to dry on the surfaces. Clean the surfaces until there is no remaining layer of soil or naphtha. Be careful not to cause damage to or change the shape of the mating surfaces.
(a)
The mating surface of the seal.
(b)
The outer clearance edge of the window assembly and the window frame.
S 214-016-B00
(3) Make sure that the silicone rubber insert bushings are in the bolt holes in the window assembly.
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S 214-018-B00
(4) Do a visual check of the window post and the sill for cracks and corrosion.
F. Window No. 3 Installation
S 644-017-B00
(1)
Apply the corrosion preventive compound to the bolt shanks
immediately before you install them.
S 424-019-B00
(2)
Install the window in the frame:
(a)
Install the retaining bolts.
(b)
Install the rubber cushion strip, the metal backing plate and the support clip.
(c)
Install the self-locking hex head nuts and tighten by hand at this time.
CAUTION: BE CAREFUL NOT TO TIGHTEN THE BOLTS MORE THAN THE
_______ SPECIFIED TORQUE. THIS CAN CAUSE DAMAGE TO EQUIPMENT.
(d) Tighten each nut 20 to 25 pound-inches.
NOTE: Use a sequence which goes in a diagonal pattern.
____ The rubber cushion strip absorbs the pressure from the torque. Make sure that the torque is correct. Pressurized flight will push all windows you installed into its frame. If the initial pressurization causes leakage, do a check of the nuts which attach the window. All loose nuts must be tightened to a torque of not more than 5 pound-inches, with the checknuts removed. If you apply a torque of more than 5 pound-inches, you can cause damage. Replace and tighten the checknuts, while you hold the attach nuts. You will not need to tighten the nuts more unless water or air leaks occur. In this case, tighten the attach nuts to a torque of not more than 5 pound-inches. For the self-locking attach nuts, 5 pound-inches is torque more than the run-on torque for the nut.
S 954-020-B00
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