SERVICING THE SEALS - ALL MODELS
Reassembly
NOTE: If your pump has been built with special seals
and O-Rings, service same type of special parts.
Refer to pump Data Sheet for correct parts and kits.
NOTE: For certain applications apply liquid gasket to
the O-Ring crevices and seal surfaces. See Tech
Bulletin 053 for model identification.
NOTE: EPDM elastomers require silicone-base lubricant.
1. Examine Lo-Pressure Seals for wear to the internal ridges
and outer surfaces, or for broken springs and replace as
needed.
2. Examine LPS Adapters for scale build up or wear and the
O-Rings for cuts or deterioration and replace as needed.
NOTE: When using alternate materials, the fit of the
special materials may be snug and require gently
driving the LPS into position with a cylinder of the
same diameter to assure a square seating and no
damage to the LPS.
3. On the model 6747, press new Lo-Pressure Seal into
each LPS Adapter with the garter spring up.
4. Place Inlet Manifold on flat work surface with crankcase
side up.
5. On the model 6747, press LPS Adapter Assembly into
each seal chamber of the Inlet Manifold with the garter
spring down.
6. On the models 6760, 6761, 6767, press Lo-Pressure Seal
into each seal chamber with the garter spring down.
7. Examine the V-Packing Cylinders, V-Packing Spacers
and V-Packing Spacer w/Coil Springs for scale build-up
and wear. Examine O-Rings and Back-up-Rings for cuts
or deterioration and replace as needed.
8. Examine Male Adapters and Female Adapters for wear
and replace as needed.
9. Examine Spacer w/Coil Springs for scale build-up, wear,
broken or fatigued Coil Springs and replace as needed.
10. Examine V-Packings for frayed edges or uneven wear
and replace as needed.
11. Place Inlet Manifold on flat work surface with crankcase
side down.
12. On the model 6747, install O-Ring on grooved end of
V-Packing Cylinder. Place V-Packing Cylinder with large
opening facing up on work surface.
13. Place Female Adapter with flat side down/“V” side up
inside each V-Packing Cylinder.
14. Insert two V-Packings with “V” side down into the
V-Packing Cylinder. The “V” will mate with “V” side of the
Female Adapter.
15. Place Male Adapter with “V” side down inside each
V-Packing Cylinder.
16. Press V-Packing Cylinder Assembly into each seal cham-
ber with V-Packings facing into the manifold chamber.
17. On the models 6760, 6761, 6767, place Female Adapter
with flat side down/“V” side up inside each seal chamber.
18. Insert two V-Packings with “V” side down into each seal
chamber. The “V” will mate with “V” side of the Female
Adapter.
19. Press Male Adapter with “V” side down into each seal
chamber.
20. Position Spacer w/Coil Springs so that the small springs
do not line up with grooves on top surface of Male
Adapter.
21. On the model 6747, install two O-Rings and two
Back-up-Rings on V-Packing Spacer w/Coil Springs with
O-Rings to the outside. Press V-Packing Spacer into each
V-Packing Cylinder.
22. On the models 6760, 6761, 6767, install O-Rings on each
end of V-Packing Spacer. Press Spacer into each seal
chamber.
23. Examine Inlet Spacer for scale build-up, wear and replace
as needed. Examine Inlet Spacer O-Rings for cuts and
deterioration and replace as needed.
24. Press Inlet Spacer into each lower manifold chamber.
Matching the spacer with coil springs and the Packings
Removing the Lo-Pressure Seals from the Inlet Manifold
Lo-Pressure Seals and Adapter arrangement (6747)
