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TB 55-1900-232-10
Properly specified and procured wire rope is lubricated during manufacture. The wire may also be protected for shipping
storage with a heavy application of Cosmoline. Since the time in storage may not be known, the towing ship should
expect to clean and re-lubricate a new towing hawser upon receipt. Re- lubrication will be required, based on frequent
inspection, and may be required as often as after each use of the hawser. Inspection of wire and lubrication procedures
are detailed m NSTM 613 (Ref. 15) Although a pressure lubricator for wire rope currently is being developed, the use of
relatively fluid oil of light viscosity is advisable for field lubrication. Further, heavier, more durable oils may hide wire
surface damage and thus make adequate inspection more difficult Grease, (MIL-G-18458), currently is specified This
product contains a corrosion preventive and it can be thinned with solvents such as JP-5 or turbine oil-2190 (MIL-L-
17331) for cold application The lubricant can be applied by swabbing with a brush. Take care that all sections, including
dead layers on the drum, are kept lubricated. These inner layers can be lubricated at such opportune times as.
a.
Overhauls
b.
When the hawser is reversed, end-for-end, on the drum
c.
When towing in good weather, at which time extra line may be run out to expose the inner layers for lubrication.
The Navy procedures for wire rope lubrication currently are being modified. The most recent guidance is contained in
NAVSEA Interim MRC for ARS 50 Class Running Rigging (Ref. 21) .
B-6 NEW HAWSERS
Wire rope for towing hawsers is shipped in cut lengths on reels. Wire rope for other uses may arrive in coils or on reels
B-6.1 UNREELING.
CAUTION
Great care should be taken when the rope is removed from the shipping package since it
can be permanently damaged by improper unreeling or uncoiling. Kinks and hockles,
see Figure B-3, may occur with careless uncoiling.
Unreeling wire rope from its reel requires careful and proper procedures There are two methods to perform this step
correctly:
a.
The reel is mounted on a horizontal shaft supported highenough for the reel to clear the deck. Since the reel is free
to rotate, the rope is pulled from the reel by a person holding the rope end and walking away from the reel as it
unwinds. A braking device must be employed so that the rope is kept taut and the reel is restrained from over-
running the rope. This is necessary particularly with powered unreeling equipment
b.
Mount the reel on a vertical reeling stand. It is then unwound in the same manner as described above in Step "a" In
this case, however, great care must be exercised to keep the rope under sufficient tension to prevent the
accumulation of slack, a condition that will cause the rope to drop below the lower reel flange.
B-6.2 RE-REELING. When re-reeling wire rope from a horizontally-supported reel to a drum, it is preferable for the rope
to travel from the top of the reel to the top of the drum, or from the bottom of the reel to the bottom of the drum. See
Figure B-4. Re-reeling m this manner will avoid putting a reverse bend into the rope as it is being installed. If a rope is
installed so that a reverse bend is induced, it may cause the rope to become less stable and, consequently, more difficult
to handle.
B-3


 


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