2-16 Maintenance procedures
2-16.1 General. Maintenance for the bridge crane system consists of lubricating, disassembling, repairing, replacing,
and reassembling equipment using repair parts listed in TM 55-1930-209-14&P-1 8. No special tools are required. A list
of tools and test equipment is in TM 55-1930-209-14&P-1 8. When performing maintenance, be sure to observe safety
precautions in this manual and manufacturers manual/instructions and the following general shop practices:
Always use new seals and gaskets, same as the original, when reassembling components that have been
disassembled for repair. Carefully install so as not to damage during assembly.
When replacing gaskets, make sure all mating surfaces are clean and free of old gasket material,
adhesive, oil, or grease. These precautions will ensure a leak-proof joint.
When replacing O-ring seals, make sure all surfaces are thoroughly clean and free of grit, dirt, and foreign
material. Prior to installation, apply a thin coat of protective lubricant to O-ring for ease of assembly.
Protect the O-ring by applying tape over threads, sharp corners, or edges.
When replacing or repairing electrical components, follow procedures for soldering in TB SIG 222. Crimp
connections as shown in Figure 2-9. Check all groundings. Check that afTER current-carrying members
are properly insulated to avoid short-circuiting. Repair abrasions and chafed insulation with tape or replace
When replacing bearings, follow procedures in TM 9-214. Lubricate bearings with recommended lubricant.
When installing bearings on shafts, apply pressure to inner race. When installing bearings in housing,
apply pressure to outer race.
Weld in accordance with TM 9-237. Welding can be used to repair cracks and breaks in steel parts such
as bracket, panels, and light framework. Weld only when replacement parts are not available because of a
chance of failure later.
(1) Strip cable insulation equal to depth of terminal well.
(2) Slide insulator, if used, over cable.
(3) Insert cable into terminal well and crimp.
(4) Slide insulator, if used, over crimped end of terminal.
Figure 2-9. Replacement of Crimped Terminals