TM 55-2840-251-23
Section VIII GENERAL MAINTENANCE PROCEDURES (Continued)
1-81 PAINTING
Refer to repairs detailed in Chapters 2 thru 10.
1-82 LUBRICATION
Refer to TM1-42B-1-7.
1-83 REASSEMBLY
1. Use only a plastic or rawhide hammer, if necessary,
when installing engine parts. Cover critical engine parts
or areas, e.g. compressor or turbine disks, with
protective material to safeguard them from scratches,
nicks or tool marks.
2. Whenever adhesive tape has been applied to any
part, the tape must be removed and the part thoroughly
cleaned of all tape residue with Petroleum Solvent (E.8),
prior to being subjected to elevated temperatures during
engine run. Test results indicate that all tapes are
capable of causing surface attack, and/or reduction in
tensile ductility as temperature is increased. Do not,
under any circumstances, leave tape or tape residue on
engine parts.
3. Preformed Packings
Replace with new parts during assembly. Insure that
correct parts are used by checking part numbers, also
confirm that replacement packings show no signs of
damage or deterioration due to storage. Inspect all
parts for burrs or sharp edges that may damage
preformed packings and gaskets during subsequent
assembly. Avoid the use of sharp-pointed or sharp
edged tools. Where packing retainers are to be fitted,
insure concave face of retainer faces toward preformed
packing. Prior to installation, new O-ring type preformed
packings should be coated with a thin film of lubricant to
the following specifications:
a.
Packings
used
in
engine
fuel
system:
Lubricating Oil (E.2) or (E.71) or Petrolatum (E.20).
b.
Packings used in engine oil system: Lubricating
Oil (E.2) or (E.71).
c.
Packings used in engine pneumatic system,
Petrolatum (E.20).
4. Antigalling and Anti-seize Compounds
The following compounds are recommended for specific
applications:
a.
Molykote M77 (E.21) should be used on all
loose fit accessory spline drives, which are external to
the engine and have no other means of lubrication.
Plastilube No. 3 Grease (E.22) may be used if Molykote
M77 is not available.
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