TM 11-6625-2440-12
b.
4-5. Daily Preventive Maintenance Checks
additional checks and services that must be performed
and Services
on a weekly, monthly, and quarterly basis, respectively.
Daily Preventive maintenance includes checks and
services to be performed on external surfaces and
devices.
4-6. Daily Preventive Maintenance Checks and Services Chart
Seq.
no.
Item
Procedure
Reference
1
Check that all equipment is present
2
Exterior surfaces
Remove dirt and moisture from exposed surfaces
of cases, front panels, interconnecting plugs,
and cables.
3
Indicator lenses
Check for cracks and clips; replace lenses as necessary.
4
Control knobs
Check that control knobs are unbroken and are
tightly installed, but not binding against panel.
Tighten loose knobs, adjust and retighten binding
knobs, replace broken knobs.
5
Switches
Check that switches work smoothly and that no excessive
None.
looseness exists. If switch movement is faulty but does
not downgrade the tests, repair if feasible or leave as is;
otherwise refer switch repair to higher level of maintenance.
services to be performed on metal surfaces, connectors,
4-7. Weekly Preventive Maintenance Checks and
and cables. These checks and services are in addition
Services
to daily maintenance.
Weekly preventive maintenance includes checks and
4-8. Weekly Preventive Maintenance Checks and Services Chart
Seq.
no.
Item
Procedure
Reference
1.
Metal surfaces
Inspect metal surfaces for rust or corrosion. Clean and touch
up paint as required.
2.
Front panel connectors
Check control panel connectors for bent or damaged pins,
None.
Refer damaged connectors to higher level of maintenance.
3.
Cables and cable
Check cables for cracked or frayed insulation, broken wires,
None.
Connectors
damaged connector. Refer damaged cable to higher level
of maintenance.
4-9. Monthly Preventive Maintenance Checks and
checks and services check the test set electronics.
Services
These are in addition to daily and weekly maintenance.
Monthly preventive maintenance checks services
4-10.
Monthly Preventive Maintenance Checks and Services Chart
Seq.
no.
Item
Procedure
Reference
1
Test set........ .................... Perform test set self-test ............................................................
sevices to be performed on software and spare parts.
4-11.
Quarterly Preventive Maintenance Checks
These checks and services are in addition to daily,
and Services
weekly, and monthly maintenance.
Quarterly preventive maintenance includes checksand
4-2
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