Table 17-4. Preventive Maintenance Checks and Services
for Workboat, Lifesaving, and Firefighting Systems (Continued)
B - Before
D - During
A - After
D - Daily
H - Hourly Interval
CHECK FOR AND HAVE
IS NOT READY/
REPAIRED OR ADJUSTED
B D A D
Check corrosion protection devices (zinc
Zinc anodes are
anodes) and replace when they have
worn down by
been worn down by 50 percent or more.
50% or more.
This includes three zinc anodes - one on
each side and one underneath outboard
drive along bottom of transom - and zinc
ring behind propeller (Volvo Penta part
839388).Three zinc anodes in the engine
are checked at 200 hour service.
Make sure propeller locking nut is tight.
Check fluid level in hydraulic helm pump
by removing cap on top of steering hous-
ing behind wheel at operator's position.
Fluid should be within 1 in. of top when
boat is level. If necessary, fill with
Seastar hydraulic fluid or Texaco aircraft
oil HO-1 5. Replace cap.
With workboat on its cradle, change oil in
Remove oil dipstick and do not loosen
O-ring on dipstick.
On outboard, remove plug (outboard
must be in full TILT UP position before
placing boat on cradle) under propeller
gear housing and drain oil into recep-
tacle for disposal.
Refit plug with O-ring installed.
Remove oil filter plug and fill with 2.5
qt of same type and grade of oil used
in engine. Do not overfill. Install filter
plug and its O-ring.
Lower outboard drive and check oil
level using dipstick. Do not screw dip-
stick into threads when checking oil. If
additional oil is required, fill through
dipstick hole. If overfull, drain oil until
proper level shows on dipstick.
Refit dipstick, with O-ring fitted, by
screwing into its receptacle. Check
that drain plug is not leaking. Tighten