TB-9-2300-378-14

M48 & M60 SERIES VEHICLES

TECHNICAL BULLETIN; AIR INDUCTION SYSTEM MAINTENANCE

SEPTEMBER 1985

TB-9-2300-378-14 - Page 109 of 296

TB 9-2300-378-14

4-12. Air Cleaner Housing Screw Hole Repair

a.

General

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

sealing of the air cleaner door.

If damaged or stripped holes occur,

following procedure.

b.

Procedure

(1) Tools and Equipment Required

(a)

(b)

(c)

(d)

(e)

(f)

(g)

(h)

(i)

(j)

(k)

Drill motor

Drill Bit, letter size “X” (0.397)

Masking Tape

Cardboard

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

Rags

Cutting Oil

Dry Cleaning Solvent NSN 6850-00-281-1985

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

Tap and Reamer Wrench

Approved Eye Protection

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

(a)

(b)

(c)

(d)

(e)

(f)

(g)

insure proper

perform the

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

exposed below tape (view A).

Fabricate drill stop (view B).

Remove air cleaner filter element (TM-20).

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

entering engine (view C).

WARNING

Use approved eye protection during drilling operations to

prevent serious eye injury.

Using drill motor, drill,

hole.

Use cutting oil on tap

minimize tap breakage.

Using tap, tap wrench,

and fabricated drill stop, drill through stripped screw

CAUTION

to prevent thread spalling and to

and cutting oil, turn tap into drilled hole until tape

contacts housing surface.

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

oil from housing.

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