Table 2-4. Preventive Maintenance Checks and Services for Handling Equipment (Continued)
Q - Quarterly
S - Semiannually
A - Annually
CHECK FOR AND HAVE
IS NOT READY/
REPAIRED OR ADJUSTED
B D A D W M Q S A
c. Remove filler cap on hydraulic tank to
Fluid level is low.
assure fluid level is within 1 in. of bottom
of filler neck. If fluid is low, add hydraulic
fluid before using crane. Screw cap on
tightly before hydraulic pump.
d. Check hydraulic system operations. To
test, turn main switch on at hydraulic
power unit motor controller (void 1 aft
bulkhead) and set HAND/OFF/AUTO
switch to HAND position.
Hydraulic power unit pump is started locally
by pushing green START button on motor
controller or pushing black START button on
START/STOP control station on deckhouse
top. If bow crane has not been used
recently, start pump by pressing green
motor controller START button and make
sure pump starts.
e. On forward weatherdeck, visually check
Class III leaks.
exposed hard piping and flexible
Crane base is not
hydraulic lines for cracks and leaks.
Check crane base to ensure that it is
secure and make sure forward weath-
erdeck is clear of material that might
obstruct bow crane movement. Inspect
hold-down bolts for damage and check
for tightness. If tightening is required,
tighten to 350 ft lb.
The anti-two-block alarm system consists of
an emergency switch which when activated
prevents the hook block from being raised
to the boom nose level. The switch lights a
warning lamp on the crane operator's con-
trol panel and sounds a horn signal. Allow-
ing the hook block to rise above the boom
hose level could cause serious damage to
the crane structure and could cause severe
Activate crane hydraulic unit.
ready for BEFORE functional test
deployment when hydraulic pump
reaches high pitched whine.