Figure 4-13. HP Pump Grease Fittings
4-7.3.16 Power takeoff bearings lubrication.
Clean grease from belt tensioner bearings grease fittings (Figure 4-13) with a clean, lint-free cloth.
Using a hand pump grease gun, pump handle three times to force grease (MIL-G-10924) into bearings.
Wipe off excess grease.
4-7.4 RO block. The RO block membranes need cleaning when the pressure difference between HP pump discharge
pressure gauge P4 (Figure 3-2) and brine discharge pressure gauge P5 (Figure 3-1) exceeds 25 psi The process,
depending on the water temperature, takes from 2 to 4 hours. These procedures are for normal cleaning operations
using seawater pump 1 for cleaning ROWPU 1 RO block and seawater pump 2 for cleaning ROWPU 2 RO block.
4-7.4.1 Preliminary procedures. If the HP pump diesel engine is operating, perform the following.
Close valve RO15 to prevent product water from flowing to drinking water tanks Open valves RO20 and
R021 to allow product water to flow directly overboard.
Do not Immediately stop engine. Operating engine for 5 minutes at low Idle allows hot areas to
cool and turbdcharger to slow down while still maintaining oil pressure on the turbine shaft.