Replacement bolts should be of equal or greater
strength than the original.
All bolts should be tightened to the proper
Check for hydraulic and pneumatic leaks.
Be alert for any unusual sounds that may
these conditions to the officer in charge.
Check spares on hand against allowable spares
list. Replenish spare parts monthly.
Maintenance personnel must establish and
carefully maintain the Recovery Wire Rope
History Chart, recording all wire rope data.
The replacement of any O-ring, V-ring, or other
pressure seal necessitates a high-pressure test of
operations. Before you can pressure test newly
installed seals, it is necessary that the unit stand
for a period of 1 hour before the seals can be
Once each year (or as modified by appropriate
technical publications), drain the ethylene glycol from
the system and replace with fresh fluid.
REPLACING PURCHASE CABLES
During recovery operations, malfunctions may
develop in the engine and cable system, causing the
purchase cable to pull out of the sheave arrangement or
break below deck, close to or at the engine, resulting in
shutdown of the system. Also, conditions occur in
which initial reeving of the engine is necessary or old
purchase cable is required to be replaced by new
purchase cable. Any or all of these conditions can occur
on single or endless reeved engines.
If the old cable is still reeved, do not pull it out.
When possible, the old cable should be used to pull in
the new. Even if the old cable is only partially reeved, it
will prove useful. Reeving is very much simplified if
cable already reeved in the proper way can be used. A
decision must be made for each particular engine as to
whether it is easier to feed the new cable from the
engine and pull from the flight deck level with a tractor,
or feed from the flight deck and pull from the engine
with block and tackle. In either case, the cable should
be pulled very slowly, and communication should be
maintained between engine and flight deck, so that the
pulling can be stopped quickly if there is danger of
pulling a kink into the line. If the purchase cable is
severed below deck but still reeved, isolate the break
and thread a 9/16-inch cable through the system and
butt braze this to the longer length to provide a
continuous line for pulling in the new cable.
The following procedures should be followed in
replacing purchase cables:
Initial reeving of an engine is facilitated by
hand-threading the complete fairlead system
and engine with a length of 9/16-inch cable.
After reeving the 9/16-inch cable, splice and
braze the end to the purchase cable and pull the
larger into the system with the smaller. This
smaller-diameter cable is easier to push
through the fairlead pipes and wrap around the
sheaves before pulling in the purchase cable.
To thread the cable through the deck and
fairlead sheaves, remove the sheave covers and
pull out the sheaves. Push the cable through the
fairlead pipes from sheave housing to sheave
housing. Then slip the cable into the sheave
groove as the sheave is replaced in the housing.
When the cable is fully threaded, replace the
In reeving the engine, use only the original,
approved reeving pattern. Study the reeving
diagram in the applicable NAVAIR main-
tenance manuals, and be careful to pass the
cable over the sheaves in the approved
sequence and through the appropriate fairleads
After the cable is reeved, the next step is to
connect the anchor end of each length. Then
the cable must be stretched taut to determine
the correct location for the terminal of the
New cables acquire a stretch over the course of the
first several engagements. This lengthening of cables
crosshead stop in the BATTERY position, and this in
turn increases the fluid capacity of the hydraulic system
and makes it necessary to add fluid to maintain the fluid
level. If the distance from crosshead to crosshead stop
in the BATTERY position becomes less than the
minimum allowable clearance of 1 inch between the
crosshead and the crosshead stop, it becomes necessary
to crop the cable and repour a terminal to readjust the
clearance to 6 inches between the crosshead and the
stop. The clearance between the crosshead and
crosshead stop with newly installed purchase cables is