TM 55-1930-209-14&P-13
2-16.2.1 5-ton geared trolley hoist
2-16.2.2 Cleaning and inspection
a.
Wipe clean with rag dampened with hot soapy water or to remove grease with solvent. Wipe dry with
clean
cloth.
b.
Visually inspect trolley hoist structural members for evidence of bends, distortion, broken welds, cracks,
corrosion, or damage.
Remove corrosion and touch up painted parts according to TB 43-0144.
c.
Visually inspect hook for deformation, cracks, wear, damage, or malfunctioning latch and hook attachment.
Replace hook if necessary.
d.
Visually check chains for excessive wear, twist, distorted links, stretch, nicks, and gouges. Apply lubricant,
if necessary. Replace damaged chain.
e.
Visually inspect wheels for damage and wear, and drive wheel hubs for loose clamping bolts. Replace
damaged wheel.
(1) Make sure bridge crane system is electrically dead by opening (OFF) and redtagging circuit breaker
P16 on switchboard.
(2) Remove stop on end of track.
(3) Remove trolley from track after securing chains and providing means to safely lower trolley.
f.
Installation. Install trolley in reverse order of installation.
2-16.3 Cable reel
WARNINGS
Shut down bridge crane system before attempting maintenance. Be sure to open (OFF) circuit
breaker 6P5 on power panel 1. Red tag circuit breaker with: "WARNING - DO NOT ACTIVATE.
REPAIRS BEING MADE." If one of the bridge crane assemblies must be operational, disconnect
junction box-to-cable reel cable terminals at junction box to cut off electrical power to cable reel.
Remove all spring tension from reel before performing maintenance.
2-16.3.1 Cleaning and inspection
a.
Make sure cable reel is electrically dead by opening (OFF) circuit breaker 6P5 on power panel 1. Red tag
circuit breaker with: "WARNING - DO NOT ACTIVATE.
REPAIRS BEING MADE."
b.
Wipe clean exterior of cable reel with clean rag.
c.
Remove all spring tension before vacuum cleaning inside of cable reel. Avoid using solvents inside of
cable reel. Solvents leave greasy film on components that may reduce electrical conductivity.
d.
Visually inspect exterior and interior for loose connections, corrosion, and damage. Clean corrosion from
terminals, tighten loose connections, and repair damage.
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