OTHER AUXILIARY EQUIPMENT

This chapter provides general information on the maintenance and repair of a variety of auxiliary machinery that you will be called upon to repair, replace, or adjust. Auxiliary machinery includes controllable pitch propellers, low-pressure steam drain systems, high-pressure steam drain systems, distilling plants, hydraulic systems, external hydraulics, hydraulic cargo hatch covers, boat davits, bow ramp and door machinery, elevators, conveyors, cranes, dumbwaiters, and escalators. You as an EN3 must have already completed personnel qualification standards (PQSs) on some of this auxiliary equipment.

CONTROLLABLE PITCH PROPELLERS

This section will discuss some general facts about the maintenance and repair of controllable pitch propellers. For more information you can refer to technical manual system-oriented instructions, Controllable Pitch Propellers, LST 1182 through LST 1198, NAVSEA 0944-LP-007-1018, or Maintenance Manual for Controllable Pitch Propellers in DD-963 Class, DDG-993 Class, and DD-997 Class, S9245-BF-MMM-010.

Keeping the hydraulic system clean is of the greatest importance. During a dismantling, there is always a possibility of foreign matter entering the system. You must avoid any unnecessary dismantlings as long as the system is working satisfactorily. If the system or a part has to be dismantled, you must be sure that all parts and pipes are clean before reassembling.

Wipe up any oil or dirt found on or near the hydraulic valve manifold, the oil distribution (O.D.) box, or the control plate assembly. Keep bilge water levels below the lower oil tank manhole cover. And, if possible, keep bilge water below the O.D. box shaft packing glands. Check all fittings and locking devices periodically to be sure they have not vibrated loose. Lubricate all moving parts weekly and wipe up excess oil. Periodically check the water near the stem of the ship for oil slicks that could result in oil leakage from hub or blade seals. Very minor leaks can be detected on the surface of the water. Follow the maintenance according to the maintenance requirement cards (MRCs). Make sure the MRCs are all tailored for your equipment. If you find an error, you must submit a feedback report.