ARMY TM 9-6115-464-12
AIR FORCE TO 35C2-3-445-1
NAVY NAVFAC P-8-624-12
r.
Operations Switch.
(1) Removal.
(a) Tag and disconnect electrical leads to operations switch.
(b) Remove nut (76, Figure 4-38, sheet 2 of 3) and tooth lockwasher (77), to remove operations
switch (78) and key washer (79). Do not remove nut (80), unless inspection reveals damage and
replacement is necessary.
(2) Cleaning and Inspection.
(a) Clean switch with filtered compressed air and a soft bristle brush or wipe with a clean, lint-free
cloth lightly moistened with an approved cleaning solvent.
(b) Visually inspect switch for cracked casing, corrosion, stripped, or otherwise damaged threads,
and evidence of shorting or other damage.
(3) Testing.
(a) Place switch in PARALLEL OPERATION position (lever away from mounting post key way).
(b) Using an ohmmeter, check for continuity between each center terminal and corresponding upper ter-
minal.
(c) Place switch in SINGLE UNIT OPERATION position (lever toward mounting post key way).
(d) Check for continuity between each center terminal and corresponding lower terminal.
(e) Replace switch if any discontinuity is noted.
(4) Installation.
(a) If removed, install nut (80, Figure 4-38, sheet 2 of 3).
(b) Install key washer (79), operations switch (78), tooth lockwasher (77), and nut (76).
(c) Connect electrical leads to operations switch.
s.
Voltage Sensing Switch.
(1) Removal.
(a) Tag and disconnect electrical leads to switch.
(b) Remove nut (81, Figure 4-38, sheet 2 of 3) and tooth lockwasher (82) to remove switch (83) and
key washer (84). Do not remove nut (85) from switch.
(2) Cleaning and Inspection.
(a) Clean switch with filtered compressed air and a soft bristle brush or wipe with a clean, lint-free
cloth lightly moistened with an approved solvent.
(b) Visually inspect switch for cracked casing, corrosion, stripped or otherwise damaged threads,
and evidence of shorting or other damage.
(3) Testing.
(a) Place voltage sensing switch in REMOTE position (lever away from mounting post key way).
(b) Using an ohmmeter, check for continuity between center terminal and corresponding upper terminal.
(c) Place switch in LOCAL position (lever toward mounting post key way).
(d) Check for continuity between each center terminal and corresponding lower terminal.
(e) Replace switch if any discontinuity is noted.
4-96
