Preventive Maintenance; Cleaning The Valve - primatech P250A Operating Instructions Manual

DISASSEMBLING THE TOOL
All pneumatic components required are packed in a cartridge
assembly which is simply inserted & removed from the tool.
This section describes how to disassemble the tool to access
its internal components.
[1] Loosen up the head lock and rotate it ¼ turn to disengage
it from the head.
[2] It is usually not necessary to remove the head cap. Simply
unscrew the head completely and take out the whole
assembly. You may engage the long arm of the Allen key
into one of the side holes and use it as a lever.
[3] Pull out by hand the cylinder from the head. Do not use
screwdriver or vise. If the cylinder remains into the main
body, pull it out of it.
[4] Pull out the valve assembly from the head. Inspect wear
ring & lubricate. Do not attempt to disassemble the valve
assembly.
[5] Pull out the piston assembly; the bumper will also come
with it. Inspect wear ring and lubricate.
It is usually not necessary to pull-out the seal bushing for
maintenance.

PREVENTIVE MAINTENANCE

This tool requires minimal lubrication. Use only
detergent-free oil such as Primatech P-090. Few
drops of oil weekly in the air inlet is sufficient. Other
types of lubricant may degrade the seals.
Check periodically to make sure that the head assembly is fully
screwed onto the main body. A loosen head will damage the
threads.

CLEANING THE VALVE

If the tool becomes sluggish or does not set the fastener
correctly, it may indicate excessive dirt, dust, other particles, or
even water, in the tool. The first step in troubleshooting is to
clean up the head assembly.
• Disassemble the head assembly as described in previous
section.
• Perform a visual inspection of the valve assembly. Ensure
that the actuator is sliding easily. Clean and lubricate lightly.
Do not attempt to take apart the actuator assembly.
• Clean the inside wall of the head and lubricate lightly with a
non-detergent oil. Insert the valve assembly into the head
and ensure that it is sliding easily.
• Ensure the piston assembly is sliding easily into the cylinder.
It should offer some resistance, but if it moves too easily, it
may be required to replace the piston wear-ring.