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©
Copyright 2003 Accuspray Application Technologies, Inc., Cleveland, Ohio USA
800-618-6860 or 440-498-9677 Fax: 440-498-9815
V M X
®
Owners Manual
Fan Air Knob
To remove the fan air knob, and to lubricate the fan
air stem threads, use a 3/64" hex key. Unscrew and
remove the fan air adjustment screws, and lift off the
fan air adjustment knob. Using your gun wrench,
unscrew and remove the fan air fitting from the gun
body. The fitting will lift out from the gun body as a
subassembly.
See Figure 1
. The subassembly may
be replaced, or you may proceed with further
disassembly.
See Figure 2
.
Caution
It is not recommended that the fan air fitting be
removed frequently. The component contains a
Teflon O-ring, and does not require regular
lubrication. Lubricate only when a new component is
installed.
The subassembly may now be disassembled by
removing the E-clip from the fan air stem, with a
small flat-blade screwdriver. With the e-clip
removed, back out the fan air stem from the fan air
fitting. The O-ring may now be removed and
replaced, and the subassembly can be
reassembled, and placed back into the gun .
Valve Rebuild
With regular cleaning and lubrication, complete
disassembly of your gun should seldom be required.
Good lubrication practices should be in place to
ensure this.
Valve rebuild is a two step procedure. Step one
involves the removal and replacement of the valve
spring. You would do this if you were experiencing a
sluggish trigger return. To remove the valve spring,
unscrew and remove the valve cap.
See Figure 3
.
At this stage, you can also remove and replace the
O-ring for the valve cap. For complete valve rebuild
instructions, continue reading.
Step two involves completely removing the valve
from the gun body. Before you can proceed, the
needle shaft and the trigger must be removed. We
will also assume that the valve cap, the valve spring,
and the O-ring have already been removed.
See
Figures 3 through 6
.
Grasp the valve stem and pull it forward. Note that
the removal of the valve stem cap is not required.
Removal and replacement of the valve stem cap will
be covered later in this section. The valve stem will
pull out from the valve seat, and out of the gun
through the seal housing.
The valve seat can be removed from the gun by
gently reinserting the valve stem into the seal
housing to "unseat" the valve seat. The valve seat
will drop out of the valve cavity.
See Figure 5
.
Seal Housing Replacement
Using your gun wrench, unscrew and remove the
seal housing. The seal housing subassembly
contains an internal snap ring. This is the only area
that a special tool is required. The snap ring requires
a size 100 tool. With the snap ring removed, lift out
the spacer, the lip seal, and clean the seal housing
cavity.
Before reassembling the seal housing, note the
orientation of the lip seal. The open end of the lip
seal is to be placed into the seal housing. Pack the
seal housing with petroleum jelly. The lip seal will be
properly installed when you feel a positive lock, and
it is resting level. Reinstall the spacer and the snap
ring.
See Figure 6
.
Valve Stem and Valve Seat Replacement
Drop a new valve seat into the valve cavity (open
end down)
See Figure 7
. Gently press down on the
valve seat to align it in the cavity. A long thin object
such as a pen works well for this.
See Figure 8
.
Reinstall the O-ring, valve spring, and valve cap.
See Figure 9
.
Gently push the valve stem back into the valve seat
through the seal housing.
See Figure 10
. You will
know that the installation is correct and complete
when the spring return action is smooth. As a final
seating procedure, depress the valve stem as far
back as it will go, then release it. Lubricate the valve
stem.
Valve Stem Cap Replacement
To remove the valve stem cap, remove the valve
stem from the gun. Place the valve stem in a vice
equipped with soft jaws. With pliers, pull off the valve
stem cap.
To replace the valve stem cap, leave the valve stem
in the vice. Hold the valve stem cap with needle
nose pliers, and lightly tap it down with a wooden or
rubber mallet. The valve stem cap will seat onto the
shoulder of the valve stem. Always replace the valve
stem cap with a new one.
The trigger and remaining components may now be
reassembled, and your gun is ready to be placed
back into service.
Maintenance
