ZEP 440C-G, Руководство по обслуживанию

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14
Pump Maintenance Record
Plunger Pumps
Operating Instructions and Parts Manual
XW Series Pumps
Figure 17
Figure 18
Figure 19
Figure 20
Figure 21
Figure 22
Service Pumps (continued)
with your fingers
(do not use any
tools you may
damage the seal).
Make sure the seal
is totally seated
against the head
ring. (See Figure
16 & 17)
3. Place the brass
intermediate ring
squarely over the
high-pressure seal.
4. Installing the low-
pressure seal with
the closed flat
side of the seal being
pushed into the piston guide (when
finished you should be looking at
the open side of the seal). Install
split O-ring (Hold in place with
light grease). (See
Figure 18)
5. Install the retainer
O-ring.
6. Squarely seat the
retainer into the
head and push with even
pressure until it snaps into position.
(See Figure 19)
Servicing the Plungers
If the plungers are not damaged they
do not need any servicing.
Tools required: 17mm socket, ratchet,
mechanics pick, taper blade gasket
scraper, thread sealant and torque
wrench.
NOTE: Be very careful when working
with the plungers, they are made from
ceramic which is brittle and can be
damaged.
Any time you remove a plunger it is
recommended you replace the slinger
washer, O-ring and top plunger washer.
The washers are a cushion for the
ceramic plunger and compress when
first used, O-ring will set to create a
seal and usually will not spring back
to its original shape. By not replacing
these parts you run the risk
of breaking a plunger or
having a water leak.
Disassembly:
1. Remove the plunger
retainer nut. (See
Figure 20)
2. Insert the gasket
scraper between the
copper washer and
plunger to remove the
washer. (See Figure
21)
3. Twist and pull the
plunger off the
plunger rod. (See
Figure 22)
4. Remove the
plunger rod O-ring seal
and split back-up ring with the
mechanics pick.
5. Remove the brass slinger. At this
point clean any thread locker that
is left on the plunger rod and
retaining nut threads.