Air Cleaner Housing Screw Hole Repair

TB 9-2300-378-14

4-12. Air Cleaner Housing Screw Hole Repair

General

Damaged or stripped air cleaner housing screw holes must be repaired to insure proper

s e a l i n g of the air cleaner door. I f damaged or stripped holes occur, p e r f o r m the

following procedure.

Procedure

(1) Tools and Equipment Required

Drill motor

(a)

Drill Bit, letter size "X" (0.397)

(b)

Masking Tape

(c)

Cardboard

(d)

Air-vat Vacuum Tool NSN 7910-00-807-3704

(e)

Rags

(f)

Cutting Oil

(g)

Dry Cleaning Solvent NSN 6850-00-281-1985

(h)

Tool kit, Coil Thread Insert: 3/8-16 UNC NSN 5180-00-935-0734

(i)

Tap and Reamer Wrench

(j)

Approved Eye Protection

(k)

(2) Repair. Perform the following to repair housing hole (fig. 4-26).

Wrap masking tape around tap provided in insert kit so that 1-inch of tap is

(a)

exposed below tape (view A).

Fabricate drill stop (view B).

(b)

Remove air cleaner filter element (TM-20).

(c)

Tape cardboard over air outlet port to prevent dust or drilling chips from

(d)

entering engine (view C).

WARNING

Use approved eye protection during drilling operations to

prevent serious eye injury.

Using drill motor, drill, and fabricated drill stop, drill through stripped screw

(e)

hole.

CAUTION

U s e cutting oil on tap to prevent thread spalling and to

minimize tap breakage.

Using tap, tap wrench, and cutting oil, turn tap into drilled hole until tape

(f)

contacts housing surface.

Using vacuum cleaner, rags, and cleaning solvent, remove chips and cutting

(g)

oil from housing.

4-49