6-3. HOUSING. - continued
Housing replacement requires total unit disassembly. Normally if the unit is
damaged to this extent it should be replaced.
If housing replacement is attempted, see individual installation instructions of
components for reinstallation of items removed.
(1) Gasket and insulation replacement.
(a) Use only gaskets, insulation, or name plates identified in TM 9-4120-401-24P.
(b) Remove as much old gasket or insulation material from unit as possible by pulling or scraping it away
from metal surface.
Adhesive remover is flammable and the vapors can be explosive. Repeated or
prolonged skin contact or inhalation of vapors can be toxic. Use in a well
ventilated area, wear gloves, and keep away from sparks or flame.
(c) Soften and remove old adhesive and gasket residue using adhesive remover and a stiff brush.
(d) Fabricate gaskets/insulation in accordance with dimensions provided in Appendix F.
(e) Coat the mating surfaces of the metal and new gasket material with adhesive. Let both surfaces air
dry until the adhesive is tacky but will not stick to fingers.
(f) Starting with an end, carefully attach the new gasket material to the metal. Press into firm contact all
(2) Blind nut (rivnut) replacement.
(a) Drill out old blind nut using a drill bit slightly smaller than the body of the blind nut. Remove blind nut.
(b) Install new blind nut.
(3) Nut plate replacement.
(a) Drill out rivets securing old nut plate using a drill bit slightly smaller than the rivet. Remove nut plate.
(b) Position new nut plate in place and secure using new rivets.
(4) Reassemble unit.
Connect power at power source.
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