Reassemble
Reassemble
Reassemble the
the
the Standard
Standard
Standard Diaphragms
Diaphragms
Diaphragms
NOTICE
NOTICE
NOTICE
After reassembly, allow the thread locker to cure
for 12 hours, or per manufacturer’s instructions,
prior to operating the pump. Damage to the pump
will occur if the diaphragm shaft bolt loosens.
TIP:
TIP:
TIP: If you are also repairing or servicing the center
section, follow
Center Section Repair, page 19
,
before replacing diaphragms.
1.
Lubricate and install the shaft u-cups (106) so
the lips face
out
out
out
of the housing (101).
2.
Assemble diaphragm (10), backer (11) if present,
and plate (9) onto plate (12) with screw (14).
Rounded side of plate (9) should face diaphragm.
Make sure the side marked AIR SIDE faces the
center housing.
NOTE:
NOTE:
NOTE: Thread locker must be applied to screw
(14) as shown for all diaphragm assemblies.
1
Apply a high-strength thread locker to
attach the screw to the diaphragm plate,
if needed.
2
Apply a medium-strength thread locker
to the shaft side of the screw.
3.
Screw assembled diaphragm assembly into shaft
(24) and hand tighten.
4.
Grease the length of the diaphragm shaft (24),
and slide it through the housing (101).
5.
Assemble the other diaphragm assembly to the
shaft as explained in step 2.
6.
Using a 5/8 in. wrench, hold the wrench flats of
one diaphragm assembly and torque the other
diaphragm to 81-94 N•m (60-70 ft-lb).
NOTE:
NOTE:
NOTE: Apply waterproof, sanitary lubricant to the
clamp (21) and clamping surface of the cover
(15) to ease assembly.
7.
Align the fluid covers (15) and the center housing.
Secure the covers with the clamps (21) and hand
tighten.
NOTE:
NOTE:
NOTE: Use a food grade anti-seize lubricant on
the clamp threads to aid assembly.
8.
Reassemble the ball check valves and manifolds
as explained in
812.0064
15
