Section IV. PREVENTIVE MAINTENANCE CHECKS AND SERVICES (PMCS)
The following information is for MONTHLY preventive maintenance checks and services (PMCS) of Teletypewriter Sets
ANIGGC-3(*) and ANIGGC-53(*), and Teletypewriter Reperforator Transmitters TT-76(*)/GGC and TT-699(*)IGGC.
Monthly PMCS should be performed every 30 calendar days of 8 hour-per-day operation. If the equipment is operated
16 hours-per-day, check it at 15-day intervals. Monthly PMCS should be done if the ANIGGC-3(*), ANIGGC-53(*), TT-
76(*)/GGC, or TT-699(*)/GGC is in standby (ready for immediate operation) condition, but is not needed if the equipment
is in limited storage. Maintenance forms and records to be used and maintained on this equipment are specified in TM
38-750. Perform all checks and services in sequence listed in Table 2-1.
a. Tools, Test Equipment and Material needed for Organizational level PMCS.
All the tools you need for PMCS on the AN/GGC-3(*), AN/GGC-53(*), TT-76(*)IGGC or TT-699(*) are in Tool
Equipment TE-50B. For expendable supplies and materials, refer to Appendix C.
Required material: Lubricating oil
Cleaning solvent (SD)
Fumes of TRICHLOROTRIFLUOROETHANE are poisonous.
Provide adequate ventilation
whenever you use TRICHLOROTRIFLUOROETHANE. Do not use solvent near heat or open flame.
TRICHLOROTRIFLUOROETHANE will not burn, but heat changes the gas into poisonous, irritating
fumes. DO NOT breathe the fumes or vapors TRICHLOROTRIFLUOROETHANE dissolves
natural skin oils. DO NOT get the solvent on your skin. Use gloves, sleeves and an apron which
the solvent cannot penetrate. If the solvent is taken internally, see a doctor.
b. PMCS Table (Table 2-1).
Routine services are a collection of checks and observations performed by the operator at all times. Routine services
are not listed in the preventive maintenance checks and services table, in order to separate the nonoperational from the
operational services. You should perform the following routines as necessary.
Check controls for smooth operation
Check for loose nuts, bolts, and connectors
Check for cut or frayed cables
Check for completeness of equipment
Check for dented, bent, or broken components
Check for rusting