(8)
PWA 86054 Handle, Edge Scraper (For PN 56A621
and 56A821 Blades)
(9)
PWA 86055 Insert, Edge Scraper (For PN 56A621
and 56A821 Blades)
(10)
PWA 101157 Insert, Edge Scraper (For PN 56A621
and 56A821 Blades)
(11)
PWA 101801 Marking Template (For PN 56A621 Blade)
(12)
3013 Vise, Soft-Jawed (or equivalent)
Wilton Tool Company
9525 Irving Park Rd.
Schiler Park, IL 60176
C.
Consumables
(1)
G02373 Cloth, Emery #400 Grit (P05-062)
(2)
B00107 Pad, Scotch Brite (Very Fine, Type A)
(P05-252)
(3)
D00247 Compound, Antigalling (PWA 586-3)
(Fel-Pro C-200) (P06-003)
(4)
D00651 Lubricant (PWA 587) (G-N Metal Assembly
Paste) (P06-005)
(5)
B00649 Cleaner, Wipe (SPMC 148) (P11-049)
D.
References
(1)
AMM 70-42-07/201, Power Denicking and Buffing of Titanium Parts
(SPOP 532)
(2)
AMM 72-31-01/401, Inlet Cone
(3)
AMM 72-31-02/401, 1st-Stage (Fan) Blades
(4)
AMM 72-31-02/601, 1st-Stage (Fan) Blades
E.
Access
(1)
Location Zones
410 Left Power Plant Nacelle
420 Right Power Plant Nacelle
F.
Procedure
(1)
Remove the inlet cone (AMM 72-31-01/401).
(2)
Remove all fan blade assemblies (AMM 72-31-02/401).
S 038-019-N00
S 028-018-N00
S 168-020-N00
WARNING: TO AVOID POSSIBILITY OF INJURY TO HANDS, GLOVES SHOULD BE WORN
_______
WHEN HANDLING BLADES AND USING TOOLS.
CAUTION: USE OF POWER TOOLS OR GRINDING IS NOT PERMITTED.
_______
(3)
Clean the blade with a Scotch Brite Pad and Wipe Cleaner.
(a)
Carefully look at the leading edge and the first few inches
(76.2 mm) of the convex side of the blade.
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72-31-02
ALL ú ú N01 Page 820 ú Feb 18/02
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
S 218-022-N00
(4) Visually inspect the blade for defects (AMM 72-31-02/601).
(a) Repair or replace the blade if the defects are more than the
acceptable service limits.
S 228-021-N00
(5) Examine each blade leading edge with the PWA 29836 Sighting Template
and PWA 29646 Thickness Gage to make sure there is sufficient
material to incorporate the new leading edge configuration.
NOTE:____ Thinning and dressing can be done with hand held scraping
tools, files and abrasive paper or cloth.
S 168-023-N00
(6) Clean and paint both sides of the blade leading edge with non-etching, non-corrosive ink, or equivalent coating fluid in preparation for marking the work area.
S 938-037-N00
CAUTION: DO NOT USE AN AWL OR METAL SCRIBER WHEN MARKING LOCATIONS ON
_______ THE BLADE. THEY CAN LEAVE A STRESS RISER ON THE BLADE. USE A SHARPENED PIECE OF HARD PLASTIC OR OTHER NONMETALLIC MATERIAL.
(7)
With the applicable marking template, scribe a line on the blade to mark the blades transition zones.
(a)
Use a PWA 75431 Marking Template for PN 52A121 blade.
(b)
Use a PWA 86053 Marking Template for PN 56A821 blade.
(c)
Use a PWA 101801 Marking Template fro PN 56A621 blade.
S 958-024-N00
(8)
Apply masking tape aft of the blade leading edge to protect the blade during rework.
S 328-025-N00
(9)
Install the blade in a Wilton Tool Company Vise 3013 or equivalent soft-jaw vise that will permit the blade to be correctly positioned during the repair.
S 328-026-N00
(10)
Contour the blade leading edge as shown in Figures 808 and 809 for the entire length of the blade.
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