3-21. CHECKS AND ADJUSTMENTS AND FLOWMETER TESTS (CONT)
c. Neutral Pressure Check (SHEET 1 OF 3).
This task covers checking of control
valve assembly neutral pressure.
TOOLS: No. 1 Common Organizational Maintenance Tool Kit
Slip joint pliers
Pressure gage, zero to 3000 psi range
MATERIALS/PARTS: Clean cloths (Appendix C, item 1)
Cleaning solvent P-D-680 (Appendix C, item 2)
Dry cleaning solvent P-D-680 used to clean parts is toxic and flammable.
Wear protective goggles and gloves and use only in a well ventilated
area. Avoid contact with skin, eyes and clothes and dont breathe
vapors. Do not use near open flame or excessive heat and dont smoke
when using it. Failure to do so could cause serious injury. If you
become dizzy while using cleaning solvent, get fresh air and medical
attention immediately. If contact with skin or clothes is made, flush
large amounts-of water.
If contact with eyes is made, wash eyes
water and get medical aid immediately.
Using clean cloth moistened with cleaning solvent P-D-680, clean all dirt
and grease from quick disconnect coupling (1) at pump outlet.
Remove cap from quick disconnect coupling (l).
(3) Connect pressure gage to quick disconnect coupling. Ensure that pressure
gage hose is long enough to read gage from operators seat.