2-14. Interior Bay Bow Pontons.
This task covers:
General Mechanics Tool Kit
Interior bay bow ponton removed
Compound, Covering (Item 1, Appendix B)
Solvent, Dry Cleaning (Item 2, Appendix B)
Rags, Wiping (Item 5, Appendix B)
a.. Repair. (figure 2-7)
Dry cleaning solvent, PD-680, used to dean parts is potentially dangerous to personnel and
property. Avoid repeated and prolonged skin contact. Do not use near open flame or exces-
sive heat. Flash point of solvent is 100°F-138°F (38°C-60°C).
Clean bow pontons using dry cleaning solvent and dry thoroughly.
Raise lever on snap-tite plug (1) and remove plug.
Remove screw (2) securing chain (3) and remove chain.
Install proton leak detector into bow ponton (4).
Connect air source to leak detector and pressurize ponton to 1.5 ± 0.1 psig.
Apply soapy solution to ponton surfaces and check for leaks.
Inspect plates and check for cracks and repair cracks in accordance with TM 9-450.
Inspect plates and check for cracks and repair cracks in accordance with TM 9-237.
Inspect surfaces for damage or minor gouging or plate, bore, or structural angle distortion and
repair with a file or suitable bending tool.
After repair of surface damage, dean, treat and paint the repaired areas in accordance with
MIL-T-704, Type B.
Remove ponton leak detector.
Mask off cavities and bores in interior bow ponton and apply nonslip deck covering compound
to top surface of ponton decking and to top surfaces of outboard sheeting.