6.
Turn the center section over. Spread a thin film
of lubricant evenly across the o-rings on the main
and center sleeve assemblies (2 & 4). Be careful
not to plug the air holes. Put the center assembly
(4) inside the main assembly (2), and use an
appropriate-sized socket to press the sleeve
assemblies into the body.
7.
Lubricate and install an EPDM ring (36‡) into
the seat for the sleeve cap (3), in the center of
the body (1).
8.
Apply medium-strength thread locker to the
threads of the second sleeve cap (3). Use the
tool (45) to install the second sleeve cap (3) into
the body. Tighten just until the cap is flush with
the surface. Do not overtighten.
9.
If using new diaphragms, remove the thread
cover on each diaphragm (25†).
10. Tighten the pump shaft (5) onto one diaphragm,
hand tight only. Do not use any tools on the shaft.
11. Lubricate the shaft, then install it in the body.
Turn the diaphragm as you push it in. Then,
tighten the other diaphragm onto the shaft, hand
tight only.
Reassemble
Reassemble
Reassemble the
the
the Fluid
Fluid
Fluid Section
Section
Section
1.
Insert the top two fluid cover nuts (18), threaded
end first.
2.
Thread the manifold bolts (29) a few turns into
the nuts (18), just to keep the nuts from rotating.
3.
Repeat steps 1 and 2 for the other fluid cover.
4.
Install the fluid covers with the top checks toward
the air inlet.
5.
Place a belleville washer (27) with the rounded
side toward the nut, then a flat washer (26) on
each tie bolt (24). Thread the first tie bolt (24)
through one fluid cover retainer (9), and then the
second tie bolt (24) through the other fluid cover
retainer (9). This necessary so that the first two
tie bolts come in from opposite sides to help keep
everything together before clamping.
6.
Thread a fluid cover (6), the center section
assembly, the other fluid cover (6) onto the first
two tie bolts (24) and between the fluid cover
retainers (9).
7.
Place the assembly in a clamp or vice. Tighten
so the first two tie bolts (24) are exposed on each
side. Thread the remaining tie bolts (24) through
the assembly.
8.
Place a flat washer (26), a belleville washer (27),
and a nut (28) on each tie bolt. Tighten the bolts
hand-tight. Do not tighten to torque specification
yet.
9.
Assemble the bottom checks. Insert the inlet ball
retainer (20†), the ball (22†), and the seat (21†),
with the chamfered side down (toward the ball).
10. Carefully remove the manifold bolts (29) from
the bottom of the fluid covers (6), keeping nuts
(18) aligned.
20
334792G
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