(3)
Deburr rework area.
(4)
Draw the proper special oversize detail as noted in step (1); if none available, proceed to step (5).
(5)
If standard oversize sleeves are not available, machine special oversize detail, or draw new standard detail and plate oversize as requested by Engineering to provide resultant required press or shrink fit requirements. All other features are to meet requirements.
NOTE: See requirements in step (1) and manual.
(6)
Inspect to include inspection of the required press fit between details.
NOTE: All liners must be installed in accordance with manual requirements if applicable.
(7)
Install special oversize detail into assembly as required to meet drawing limits, hold all other features to drawing requirements.
(8)
Machine sleeve and complete in accordance with manual requirements.
(9)
Deburr reprocess area in accordance with manual requirements.
(10)
Where applicable, pressure test the reprocess area in accordance with manual
requirements.
(11)
Flush and clean to remove chips and re-oil liners in accordance with manual requirements.
(12)
Visually inspect.
(13)
Nondestructive test as required by manual.
C. Method No. 415C: Oversize Steel Bearing Liners (Plated)
To repair oversize or true position condition of bores in parent material for steel bearing (bushing) liners to obtain drawing press fit requirements.
Repair Page 467 Apr 1/05
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Any one of the following standard repair processes may be used to increase the diameter of a steel bearing (bushing) liner to obtain the drawing press fit requirements:
403B Hard Chrome Plating
403C Thin Dense Chrome Plating
403I Electroless Nickel Plating
403J Styli Electroplating
(1) Remachine the nonconforming housing diameter to true or resize as applicable.
(2) Process the steel bearing (bushing) liner in accordance with one of the above methods.
(3) Inspect for manual press fit requirements.
(4) Install the plated liner to meet manual requirements.
(5) Visually Inspect.
16. Repairing Damaged/Oversize Threads
NOTE: See Method No. 407A, 407B, and 407C for repair of loose or damaged inserts.
Prepare for and install standard Heiicoil., or (in case of Helicoil. thread rework) by using a Helicoil;. twin-sert to meet resultant required thread.
Damaged or oversize threads in aluminum or magnesium (where wall thicknesses are
0.035 inch or greater at thinnest point) may be processed to original manual thread requirements using suitable Keensert. installation.
A. Method No. 416A: Damaged or Oversize Threads Corrected by Helicoil Inserts And Helicoil Twin-Serts.
NOTE: Twin-serts are machined for and installed at the same operation.
CAUTION: DO NOT INSTALL ANY STEEL INSERTS INTO ALUMINUM OR MAGNESIUM ALLOYS UNTIL AFTER THE PART HAS BEEN PROTECTIVE COATED (ANODIZE OR ANODIC COATING).
(1)
Prepare for standard Helicoil. thread to meet resultant thread requirements, as required by the manual. Touch up bare metal at rework area, chromate conversion coat aluminum in accordance with MIL-C-5541 and magnesium with Dow 1 or 19. in accordance with product specification.
(2)
Deburr as required (touch up bare metal at rework area, Iridite aluminum in accordance with MIL-C-5541 and magnesium with Dow 1 or 19. in accordance with product specification.
(3)
Flush and clean to remove chips and foreign material.
Repair
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20-00-02/70-00-01
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