BP307
www.bpfasteners.com
Page 12
How to repair a damaged piston
The piston is used very frequently and must
be replaced periodically. Typical signs of a
worn piston are broken, bent or enlarged
head.
Before performing maintenance to a tool,
make sure there is no powder load in the
BP307 tool. When taking the tool apart do
not lose or damage any other part of the
tool.
1.
Rotate the annular spring off the
pawl using a flat screwdriver.
2.
Remove the pawl by lifting it up and
away from the tool body.
3.
Slide the piston sleeve and front
barrel assembly out of the tool
body.
4.
Remove the piston sleeve and front
barrel assembly.
5.
Unseat and remove the shear clip by
prying it up with a flat screwdriver.
Remove the clip from the barrel by
prying it up and away from the
groove in the barrel. Use care to
keep the clip from flying free when it
is removed.
6.
Separate the front barrel and
fastener guide from the piston
sleeve.
7.
Slide the piston out of the piston
sleeve and slide the fastener guide
out of the front barrel.
8.
The tool is now disassembled for
normal cleaning.
Inspect all the
parts for wear and tear or damage.
Clean or replace if needed, use
detergent oil and cleaning brushes
to remove dirt and powder residues.
Wipe all parts dry before
reassembly. Wear safety goggles
when cleaning tool parts.
To assemble the tool BP307
1.
Reassemble the tool in the reverse
order of disassembly. When sliding
the front barrel onto the piston
sleeve, align the groove in the piston
sleeve with the groove in the front
barrel.
2.
Align the groove in the piston sleeve
with the pawl opening in the tool
body when placing the barrel
assembly into the tool body. Replace
the pawl and install the annular
spring.
CAUTION: The test should be
done without a fastener or load
in the tool.
