PROCEDURES

TB 1-1520-251-20-13

NOTE

If the flange ring is not attached with pins, go to step 6.

NOTE

If there is no flange ring on it, go to step 7.

9.5

Use a 5/32' drill bit (or slightly larger) and gently drill off the top of each pin.

CAUTION

Do not drill out the pin. Remove only the peened section to allow the

removal of the ring. Slight indentations in the pin to a depth below

the flange edge surface are acceptable.

9.6

Remove the flange ring as follows:

9.6.1

Use a pry bar, start at the split and peel one end of the ring away from the flange.

9.6.2

Lever up the end until there is sufficient ring material loose to grip with locking pliers.

9.6.3

Adjust and tighten the pliers to the ring end and continue to peel the ring away from the flange.

NOTE

Earlier adhesives may peel away easily.

9.6.4

Completely remove the ring from the flange.

9.7

Use the hammer and gently peen and pins protruding above theflange edge surface.

9.8

File the pins off flush with the edge.

CAUTION

Do not over file the flange edge at any point, a flat spot in the other-

wise curved surface may result.

9.9

Locate any previously drilled open holes (not filled with a pin).

9.10

Gently hammer a pin into each open hole.

9.11

Peen the pin into position.

9.12

File the pin flush with the edge.

CAUTION

Do not over file the flange edge at any point, a flat spot in the other-

wise curved surface may result.

9.13 Use cleaning solvent and an abrasive sheet to remove all of residual adhesive from flange area and

adjacent surfaces.

9.14 If not already done in the previous step, use the abrasive sheet and lightly abrade all of the flange edge

surface on the generator housing.

9.15

Use the abrasive sheet and lightly abrade the internal diameter surface of the new flange ring.

9.16 Use lint free wipes and cleaning solvent to remove any abrasion dust and any other contaminant from

the flange edge surface and the internal diameter surface.

9.17

Put on disposable latex or nitrile gloves.

9.18

Apply the chemical film conversion coating to all abraded areas of the generator housing.

9.19

Spread the chemical film conversion coating with the applicator or a small brush to all abraded areas.

9.20

Allow the solution to sit on the surfaces for a minimum of 3 minutes.