All 1DX.MIST, 2DX, 2DX.MIST and 3DX Models
Lo-Pressure and Hi-Pressure Seals with Seal Case
3SP30G1I, 3SP35GEI, 3SPX30G1I, 3SPX35G1I
Lo-Pressure Seal, V-Packing, Male Adapter and Seal Case
SERVICING THE SEALS
Disassembly
NOTE: All pump models require one (1) seal kit to repair
pump. Models 2DX, 2DX.MIST, 3DX, 3DNX, 3SP and
3SPX contain (3) high pressure seals, (3) low pressure
seals, (3) seal washers and (3) o-rings. Whereas, model
1DX03ELS.MIST contains (2) high pressure seals, (2) low
pressure seals, (2) seal washers and (2) o-rings. The
model 1DX015ELS.MIST contains (1) high pressure seal,
(1) low pressure seal, (1) seal washer and (1) o-ring.
1.
Using an M5 allen wrench, remove the hex socket head
(HSH) screws from the face of the manifold head.
2.
Insert flat head screwdrivers on each side between the
crankcase and manifold head. Gently apply pressure to the
head to begin separation.
3.
Support the manifold head from the underside and pull the
manifold head away from the crankcase.
CAUTION: Keep the manifold head properly aligned with
the ceramic plungers when removing to avoid damage to
the plungers.
NOTE: The seal case may stay in the manifold or on the
ceramic plungers.
4.
Place manifold head on work surface with crankcase side up.
5.
Remove seal retainer from each plunger rod.
6.
Use a screwdriver to pry out the Lo-Pressure seal from
each seal case.
CAUTION: Screwdriver may damage seal during removal.
7.
Use reverse pliers to remove seal case from each seal
chamber.
NOTE: Insert the reverse pliers into the second lip to avoid
damage to the seal case.
8.
Carefully insert a small screwdriver under the o-ring and
roll the o-ring off each seal case.
CAUTION: Exercise caution as the screwdriver may score
o-ring sealing surface.
9.
Models 1DX.MIST, 2DX, 2DX.MIST and 3DX: The Hi-
Pressure seals can be easily removed from each seal
chamber by hand or with reverse pliers.
Models 3DNX, 3SP and 3SPX: Remove V-Packing and
male adapter from each seal chamber by hand or with a
reverse pliers.
Reassembly
1.
Examine the manifold chamber walls for scale buildup or
damage.
2.
Examine Hi-Pressure seals or V-Packings for frayed
edges or uneven wear and replace as needed.
3.
Examine seal case o-rings for cuts or deterioration and
replace as needed.
4.
Examine Lo-Pressure seals for wear to the internal ridges,
outer surfaces for broken springs and replace as needed.
NOTE: Seals and o-rings are available in seal kits.
5
Examine seal retainers for deformation and replace as
needed.
6.
Models 1DX.MIST, 2DX, 2DX.MIST and 3DX: Lubricate
and install new Hi-Pressure seal by hand into each seal
chamber with the grooved side down.
Models 3DNX, 3SP and 3SPX: Install male adapter with
notch side down. Lubricate and install new V-Packing by
hand into seal chamber with grooved side down.
7.
Lubricate and install o-ring on each seal case. Press small
end of seal case into each seal chamber.
8.
Press new Lo-Pressure seal into each seal case with the
garter spring down.
9.
Examine ceramic plunger for cracks or scale buildup and
proceed to SERVICING THE PLUNGERS if worn.
10. Models 1DX.MIST, 2DX, 2DX.MIST and 3DX: Slide seal
retainer over each ceramic plunger with the drain slots fac-
ing the crankcase and the openings to the top and bottom.
Press into the crankcase.
Models 3DNX, 3SP and 3SPX: Slide seal retainer over
each ceramic plunger with the tabs facing out. Press into
the crankcase.
11. Rotate crankshaft by hand so the two outside plungers are
extended equally.
12. Lightly lubricate ceramic plungers, then carefully slide the
manifold head over the ceramic plungers, supporting it
from the underside to avoid damage to the plungers or
seals. Press the manifold head up to the crankcase until
flush.
13. Thread HSH screws in hand tight. Torque in sequence to
specifications in torque chart.
