EXHAUST PIPE MAINTENANCE-Continued.
Cleaning solvent, Federal specification P-D-680, is toxic and flammable. Use only in a well-
ventilated area. Avoid prolonged breathing of fumes. Keep solvent away from flames. Do not
use in excessive amounts. Avoid skin contact.
Clean exhaust pipe section interiors and exteriors with cleaning solvent (item 11, Appendix E) and a
medium bristle brush (item 2, Appendix E) to remove all traces or dirt and soot.
Allow to dry.
Inspect captive screws for stripped or damaged threads.
Inspect bottom section for cracked welds, cracked or damaged mounting plate.
Inspect pipe sections for dents, holes, cracks, bends, and corrosion.
Inspect heat guard for broken welds, broken wires, corrosion, and secure mounting.
Place exhaust tube assembly (5) into position and secure by tightening four captive bolts (6).
Install tube and guard assembly (4) onto exhaust tube assembly (5).
Slide; middle exhaust pipe (3) onto tube and guard assembly (4).
Slide top exhaust pipe (2) onto middle exhaust pipe (3).