(5)
"Protruding head" is a general term applied to any rivet where the head projects above the surface of the items being assembled.
(6)
100 degree flush head rivets are installed in countersunk holes and the heads of rivets are flush with outside surface of items being assembled.
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B. Method No. 410B: Damaged Rivet Replacement Replace damaged rivet as follows: WARNING: USE CORRECT PERSONAL PROTECTION. PROCEDURES THAT NEED GRIND/MACHINE WORK WILL CAUSE LOOSE PARTICLES THAT CAN GET IN YOUR EYES.
CAUTION: EXERCISE CARE WHEN DRILLING OUT OLD RIVET NOT TO DAMAGE BASIC ITEMS.
(1)
Drill or machine off head of installed rivet.
(2)
Use a center-punch and hammer and punch out remainder of rivet.
(3)
Clean rivet hole in accordance with SECTION II, and applicable manual.
(4)
Install new rivet in accordance with applicable manual, using tooling specified in applicable manual.
Riveting (Typical)
Figure 405
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11. Repairing Welded Parts
NOTE: Refer to applicable manual for unit for specialized welding.
A. Method No. 411A: Fusion Weld Repair of Aluminum Alloy Parts
Fusion weld is used when no other repair scheme is applicable and the repair is in a noncritical R area: applicable engineering specification AMS-W-5018.
(1)
Degrease for weld.
(2)
Hand abrade area to be weld repaired.
(3)
Wipe area clean with methanol or other suitable solvent.
(4)
Preheat for weld.
(5)
Weld in accordance with AMS-W-5018 using filler rod specified by manual.
(6)
Hand finish weld area to blend if required by manual.
NOTE: The sequential order of steps (6) through (12) may be altered.
(7)
Penetrant inspect.
(8)
Radiographic inspect if required by manual.
(9)
Reheat treat as required to restore to original condition.
(10)
Nondestruct test as applicable.
(11)
Nondestructive pressure test as applicable.
(12)
Remachine as applicable to manual requirements.
(13)
Deburr as required.
(14)
Touch up with chem-film in accordance with MIL-C-5541 when parts have been processed past anodize.
(15)
Visually inspect.
B. Method No. 411B: Fusion Weld Repair of Magnesium Alloy Parts
Fusion weld is used when no other repair scheme is applicable and the repair is in a noncritical R area: applicable engineering specification AMS-W-5018.
(1)
Degrease for weld.
(2)
Hand abrade area to be weld repaired.
(3)
Wipe area clean with methanol or other suitable solvent.
(4)
Preheat for weld.
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(5)
Weld in accordance with AMS-W-5018 using filler rod specified by manual.
(6)
Hand finish weld area to blend if required by manual.
NOTE: The sequential order of Steps (6) through (12) may be altered.
(7)
Penetrant inspect.
(8)
Radiographic inspect if required by manual.
(9)
Age as applicable if required by manual.
(10)
Nondestruct test as applicable.
(11)
Nondestructive pressure test as applicable.
(12)
Remachine as applicable to manual requirements.
(13)
Deburr as required by manual.
(14)
Touch up with Dow 1 or 19. in accordance with manufacturer’s specification when parts have been processed past anodic coat.
(15)
Visually inspect.
C. Method No. 411C: Fusion Weld Repair of Corrosion-Resistant Steels Cobalt- And Nickel-Base Alloy Parts
Fusion weld is used when no other repair scheme is applicable and the repair is in a non-critical area. Applicable weld specification: AMS-W-5018.
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