Annovi Reverberi SJW3G25D-F27 Istruzioni per l'uso e manuale delle parti - Pagina 9
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Operating Instructions and Parts Manual
Plunger Pumps
Service Pumps (Continued)
7.
Put a thin coat of
oil on the plungers
and packings. (See
figure 19)
8.
Carefully install
the manifold and torque
the bolt to the proper
specifications. (See figure
20)
Valve life is dependant
on many variables. Hard
water, cavitation, corrosion,
chemicals and equipment care.
The valves are a wear item
and need periodic replacement. Worn
O-rings or damaged valves will cause
pressure loss and pulsations.
Servicing the Packings/Seals
Packings:
Disassembly:
To access the water seals for inspection
or replacement, you will first need to
remove the head of the pump.
NOTE: It is important to make note
of the order in which the components
of the packing stack are arranged and
facing during disassembly.
1.
Remove the head bolts.
2.
Insert small pry bars between the
Available from Allparts Equipment and Accessories - 1-877-475-5660 - www.allpartsinc.com
head and body at
opposite corners and
apply pressure down
on one pry bar and up
on the other pry bar.
(See figure 21)
3.
Lift the head up and
Figure 19
away from the body. (See
figure 22)
NOTE: The
packing stacks
will not always
stay in the head
of the pump when it is
Figure 20
removed. Sometimes one or more
components of the packing stack
will come out of the head and stay
on the plunger.
4.
To remove any components that
stay on the plungers
simply twist back and
forth while pulling up.
(See figure 23)
5.
Remove low pressure
seals insert screwdriver
under seal lip and lift
up. (See Figure 24)
6.
Remove the piston
guides from the head
by using a reverse plier
(preferably rubber coated)
inserted into the center of
the piston guide.
7.
Use a back and forth twisting
motion while pulling up (clockwise
and counterclockwise).
SJ & XJ Series Pumps
Figure 21
Figure 22
Figure 23
Figure 24
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