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TM 10-4320-342-24
3-27. ENGINE FUEL CONTROL LOWER COVER REPAIR - continued.
CAUTION
Keep primers closed as much as possible to prevent premature drying.
(3)
Coat head and tail rivets (3) with wet coat of epoxy primer.
(4)
Apply thin coat of primer to engine fuel control lower cover (2) bonding surface. Allow to dry for 30 minutes.
CAUTION
Applied RTV should not sit more than 2 to 3 minutes prior to assembly. A surface
skin will develop that will interfere with prior bonding.
NOTE
Do not apply RTV to more area than can be done in 2 to 3 minute interval.
(5)
Apply a uniform layer of RTV approximately 0.010 inch thick to bonding surfaces of engine fuel control lower
cover (2) and seal (1) with acid swabbing brush.
(6)
Install seal (1) on engine fuel control lower cover (2). Apply a small amount of finger pressure to obtain
smoothing and contact.
(7)
With pressure sensitive tape, tape seal (1) to engine fuel control lower cover (2) to maintain alignment during cure
cycle. Cure at room temperature for 72 hours.
(9)
Remove pressure sensitive tape and trim excessive RTV.
Figure 3-48. Engine Fuel Control Lower Cover Repair
3-104
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