M978 Tanker Maintenance Instructions (Cont)
25-32.1 V21 CHECK VALVE AND RECIRCULATION LINE PIPING REMOVAL/
Remove two screws (1), washers (2) and
hinge post (3).
Remove three screws (5), hinge clamp
(6), and seal (7) from hinge post (3).
Remove six screws (8), two clamp plates
(9), and two valve plates (10) from
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 water.
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.
Clean all metal parts with dry cleaning solvent.
Dry metal parts with compressed air.
Inspect all metal parts for bends, breaks, cracks, and sharp edges.
Replace damaged parts.
Install two valve plates (1) and clamp
plates (2) to seal (3) with six screws (4).
Install hinge clamp (5) and seal (3) to
hinge post (6) using three screws (7).
Install hinge post (6) in valve body (8)
with two washers (9) and screws (10).