TM 10-4610-310-14
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SERVICING VALVES - continued
6. Remove seat (36), O-ring (37), valve (38), spring (39), and spring retainer (40) from each inlet valve chamber
in the discharge manifold (41). Place removed parts in parts tray. Account for all parts.
7. Remove three discharge valve adapters (35) with two inner and outer O-rings (34) from the three large
diameter and deeper discharge valve chambers in the discharge manifold (41).
8. Seals (29) generally remain with the inlet manifold (27) as it is removed.
9. If seals (29) remain in inlet manifold (27), insert two screwdrivers under the lip of the seals. Pry the seals
from the inlet valve chamber if necessary.
10. Remove seat (36), O-ring (37), valve (38), spring (39), and spring retainer (40) from each discharge valve
chamber in discharge manifold (185).
11. Remove any gasket material from the parts.
Assembly (Discharge)
NOTE
For certain applications, apply liquid gasket to O-ring crevices and seal surfaces.
NOTE
(EPDM) elastomers require silicone-base lubricant.
1. Examine spring retainers (40) for internal wear or breaks in the structure. Replace as needed.
2. Examine springs (39) for fatigue or breaks. Replace as needed.
3. Examine valves (38) for grooves, pitting, or wear. Replace as needed.
4. Position spring retainer (40) in each deep discharge valve chamber in discharge manifold (41). Push in until
spring retainer rests on the machined ridge in each chamber.
5. Insert spring (39) into the spring retainer (40) over the plastic center guide.
6. Place valve (38) over spring (39) with concave side down.
7. Examine seat O-rings (34) for cuts or wear. Replace as needed.
8. Lubricate O-ring (34) with Glycerin. Insert into groove on outside of each seal (29).
9. Place O-ring (34) on lip of spring retainer (40).
10. Carefully square O-ring (34) in each valve chamber to avoid cutting O-ring when seat (36) is installed.
11. Examine seats (36) for grooves, pitting, or wear. Replace as needed.
12. Install seat (36) with concave side down in each discharge valve chamber. Make sure O-ring (34) fits snugly
into each groove in seat.
13. Examine both inner and outer O-rings (34) on the discharge valve adapter (35) for cuts or wear. Replace as
needed.
14. Carefully press discharge valve adapter (35) with small diameter side down into each upper valve chamber
until discharge valve adapter snaps lightly into position.
Assembly (Inlet)
1. Examine spring retainers (40) for internal wear or breaks in the structure. Replace as needed.
2. Examine springs (39) for fatigue or breaks Replace as needed.
3. Examine valves (38) for grooves, pitting, or wear. Replace as needed.
4. Position spring retainer (40) in each shallow inlet valve chamber in discharge manifold (41). Push in until
spring retainer rests on the machined ridge in each inlet chamber.
5. Place valve (38) over spring (39) with concave side down.
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