M978 Tanker Maintenance Procedure Instructions (Cont)
22-12. V3 SUCTION LINE VALVE AND V17 GRAVITY VALVE REPAIR (CONT).
Remove screw (2), washer (3), handle (1), and washer (4) from stem (5).
Remove two nuts (6) and screws (7) from upper housing (8) and
lower housing (9).
Remove lower housing (9) from body and liner (10).
Preformed packing and stem may stay in
Remove preformed packing (11) from stem
(12) on lower housing (9). Remove upper
Remove stem (12) from lower housing (9).
Remove preformed packing (14) from upper
Adhesives solvents, and sealing compounds can burn easily, can give off harmful
vapors, and are harmful to skin and clothing. To avoid injury or death, keep
away from open fire and use in well-ventilated area. If adhesive, solvent, or
sealing compound gets on skin or clothing, wash immediately with soap and
Clean all metals parts with dry cleaning solvent.
Compressed air used for cleaning purposes will not exceed 30 psi (207 kPa). Use
only with effective chip guarding and personal protective equipment, goggles,
shield and gloves.
Dry metal parts with compressed air.
Inspect all metal parts for bends, breaks, cracks, and sharp edges.
Replace damaged parts.