TM 10-4610-310-14
0125 00
SERVICING SEALS - continued
Assembly
NOTE
For certain applications, apply liquid gasket to O-ring crevices and seal surfaces.
NOTE
EPDM elastomers require silicone-base lubricant.
NOTE
For standard installation, apply a small amount of oil to the outside edge of LPS, HPS, inlet
adapter, and discharge valve adapter for ease of installation and to avoid damage.
1. Examine LPS (26) for wear to the internal ridges, outer surfaces, or for broken springs. Replace as needed.
2. Make sure to invert inlet manifold (27) with crankcase (16) side up.
3. Apply liquid gasket to the manifold bores where the LPS (26) will make contact when installed.
4. Press LPS (26) into each seal chamber of the inlet manifold (27) with garter spring down.
CAUTION
When using alternate materials, the fit of the special materials may be snug. This will require
gentle driving of LPS into position with a cylinder of the same diameter to ensure square
seating and no damage to the LPS.
5. Carefully square LPS into position.
6. Examine HPS (29) for wear to the internal ridges or outer surfaces. Replace as needed.
7. Invert the inlet manifold (27) with crankcase (16) side down.
8. Apply liquid gasket to the manifold bores where the HPS (29) will make contact when installed.
9. Press HPS (29) into each seal chamber with metal backing down until completely seated.
10. Examine inlet valve adapters (32) and discharge valve adapters (35) for scale build-up and wear. Replace as
needed.
11. Examine spacer O-rings (34) on the discharge valve adapter (35) for cuts and deterioration. Replace as
needed.
12. Examine inner and outer adapter O-rings (31, 34) on the inlet valve adapter (32) for cuts and deterioration.
Replace as needed.
13. Apply liquid gasket to O-ring grooves on inlet valve adapter (32) and discharge valve adapter (35).
14. Apply liquid gasket to the manifold bores where the adapters (32, 35) will make contact when installed.
15. Carefully press discharge valve adapter (35) into each discharge valve chamber in discharge manifold (185)
with small diameter side down until adapter snaps tightly into position.
16. Carefully press inlet valve adapter (150) into each inlet valve chamber in discharge manifold (41) with small
diameter side down until adapter snaps tightly into position.
17. Rotate crankshaft (7) by hand so the two outside plungers (22) are extended equally.
18. Lightly lubricate three ceramic plungers (22) with Glycerin to assist in installing the inlet manifold (27).
19. Position inlet manifold (27) over ceramic plungers (22).
20. Apply Locktite-242 to four screw (28) threads.
21. Install four screws (28) through inlet manifold (27) into crankcase (16). Tighten hand tight.
22. Torque four screws 9.4 foot-pounds (13 N m) in cross pattern sequence.
23. Position discharge manifold (41) over ceramic plunger (22) ends. Align exposed discharge valve adapters
(35) with inlet manifold (27) chambers. Press into position.
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