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.
4-49


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