TM 9-2320-366-34-1
d. Screws, Nuts and Fittings. Replace any screw, nut, or fitting with damaged threads. Inspect tapped holes for
thread damage. If cross-threading is evident re-tap the hole for the next oversize screw or stud. If the re-tapping will
weaken the part, or if the cost of the part makes re-tapping impractical, replace the part. Chasing the threads with
proper size tap or die may be adequate.
e. Stud Installation. When installing studs use a proper driver. A worn stud driver may damage the end thread. Then
a chasing die must be used before a nut can be screwed on. This procedure will remove cadmium plating and allow
corrosion. Before installing a stud, inspect the hole for chips. Blow out foreign matter and start stud by hand. Before
final insertion, coat thread with a film of antiseize compound (Item 11, Appendix C). Install stud to proper "setting
height", which is the total projecting length.
f. Dents. Straighten minor body dents by tapping with a soft-faced hammer while using a wooden block backing.
g. Sheet Metal Repair. Repair minor skin cracks by installing patches.
h. Wire Repair. Replace all broken, worn, or burned electrical wiring. Wires with several broken strands must be
replaced. Broken strands will increase the resistance of the wire and impair efficiency of electrical components,
especially the ignition system. Wire numbers must be permanently identified on any new wiring.
2-28. GENERAL ASSEMBLY INSTRUCTIONS
a. Preparation. Remove protective grease coatings from new parts before installation.
b. Preformed Packing Installation. Lubricate all preformed packings with a thin coat of lubricating oil (Item 45,
Appendix C) before installing. To install a preformed packing, first clean the groove, then stretch packing and place into
position. Place component on flat surface and uniformly press packing into position.
c. Pipe Joints and Fittings. Use nonhardening sealing compound (Item 75, Appendix C) or antiseize tape (Item 84,
Appendix C) to join piping and fittings.
d. Oil Seals. Coat oil seals evenly with oil or grease before installing. Install oil seals with seal lip facing toward
lubricant, applying an even force to outer edge of seal. If oil seals are to be installed over keyed or splined shafts, use
a guide to prevent sharp edge of keyway or splines from cutting the leather or neoprene seal. Construct guides of very
thin gauge sheet metal and shape to the required diameter. Make certain guide edges are not sharp and are bent
slightly inward so they do not cut the seal.
e. Bearings and Shafts. When mounting bearings on shafts always apply force to the inner races. When mounting
bearings into housing always apply the force to the outer race.
f. Bearing Lubrication. Lubricate bearings before assembly with lubricant used in the related housing or container
to provide the first run-in until lubricant from the system can reach the bearings.
WARNING
On direct contact, uncured silicone sealant irritates eyes. In case of contact,
flush eyes with water and seek medical attention. In case of skin contact, wipe
off and flush with water. Failure to comply may result in injury to personnel.
g. Silicone Sealant. Silicone sealant is often used instead of a gasket to seal mating parts. The mating parts must
be clean, dry, and free of oil or grease for proper adhesion. After silicone sealant has been applied, the mating parts
must be assembled immediately. Silicone sealant starts to set-up in 15 minutes and takes 24 hours to completely dry.
Excess silicone sealant should be wiped off after assembling the mating parts.
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