Table 7-2. Preventive Maintenance Checks and Services for Compressed Air System (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
Check air station 6 outlet PIG launcher
controls as follows:
Shore discharge hose must remain free
from oil and dirt. Use only designated
25-ft air hose on compressed air station 6
for supplying compressed air to power PIG
through shore discharge hose.
1) Hold clean, white, dry cloth in front of
air station 6 outlet and turn valve
counterclockwise to open. Blow com-
pressed air through cloth. Smell air
coming out of air valve. If air smells
oily or specks of dirt, oil or grease
show on cloth, check oil level in air
2) If oil is overfilled, drain to authorized
Oil is present in
level. Change air filter and repeat air
quality check with white cloth. Con-
tinue until air station 6 is free of oil
smell and stain.
Air Impact Wrench
Always wear safety glasses when operating
air impact wrench.
Use only impact wrench sockets. DO NOT
use sockets from a hand wrench set.
Make sure compressed air system has
been purged of moisture within last 4
hours. If not, open drain cock on bottom
of air filter 1 until all moisture has been
drained from system.
Check all air station valves and quick-
disconnect fittings for damage or
improper operation. Notify shift leader
or bargemaster of any problem.