5
Stapler DISASSEMBLY:
TO REPLACE RUBBER BUMPER (#20 or #65):
1. Disconnect the air supply
2. Remove the four (4) cap screws holding the
Adapter Foot, Foot and Staple Channel assembly to
the main Body (see illustration).
3. Pull the Rubber Bumper out of the cylinder bore.
Replace the old Bumper if it shows signs of wear or it
is split.
4. Reverse these steps to reassemble the Stapler.
Be sure to align the Driving Blade with the slot in the
Staple Channel Assembly while you reassemble the
Stapler.
NEVER FIRE THE Stapler WITHOUT THE RUBBER
BUMPER INSTALLED, IT WILL SEVERELY DAMAGE
THE STAPLER.
CHANGING A DRIVING BLADE (#14):
1. Disconnect the air supply.
2. Remove the four socket head cap screws(49)
holding the Adapter Foot(6), Foot(7) and Staple
Channel AssemblY(42) to the body.
3. Remove the Rubber Bumper(20).
4. Pull the Driving Blade(14) with pliers until the
Piston(10) is fully extended outward towards the
bottom of the cylinder.
5. 5. Use a 15/16” box wrench (Part #: 09-445-
29768) to unscrew the Driving Blade Jam Nut(50)
and remove it. Hold the Piston from turning while
unscrewing the Jam Nut by holding the piston hex
with a 1-1/8” box wrench (Part #: 09-445-29768).
6. Push out the 1/4” diameter blade retaining Dowel
Pin(38) and remove the broken Driving Blade stub.
7. Install a new Driving Blade in the slot and replace
the Dowel Pin(38). Screw on the retaining Jam
Nut(50) using the same tools. If the Jam Nut
becomes worn and loose after frequent removals, it
should be replaced.
8. Check the t, there should be some sideways
movement between the Driving Blade and the Jam
Nut assembly. This is desirable and helps the blade
to align itself with the mating parts.
9. Reassemble the components. Be sure to align
the Driving Blade with the slot in the Adapter Foot
Assembly(7,6).
SEAL REPLACEMENT: There are 7 seals that
may require replacement. We recommend that
you have your POWERStaple Dealer replace the
Seals.
SEAL KIT: You may choose to buy a Seal
Replacement Kit and replace the seals yourself.
It is good practice to replace all seals at one time
regardless if only one seal needs replacement.
SEAL DESCRIPTION & NUMBER:
1. Rubber Seat (#19)
2. Plunger Seal Set (#21)
3. Piston U-Cup Lip Seal (#22)
4. Return Cylinder U-Cup Lip Seal (#23)
5. Piston Rod U-Cup Lip Seal (#24)
6. Plunger Wiper Seal (#25)
7. Return Cylinder O-Ring Gasket (#26)
To change Seals follow these procedures. Be sure
the air line is disconnected from the Stapler rst
before making any repairs. Consult the illustration
for the name and location of the following
component parts.
SEAL REPLACEMENT REQUIRES REMOVAL
OF THE DRIVING BLADE ASSEMBLY:
1. Disconnect the air supply.
2. Remove Rubber Plunger Cap (#18).
3. Unscrew & remove Body Cap (#2).
4. Push Safety Yoke (#8) aside and unscrew the
three #10-32 cap screws holding the Plunger
(#12) to the Return Cylinder (#11).
5. Pull the Plunger up and out of the Stapler Body
(#1) cavity.
6. Remove the Return Cylinder O-Ring Gasket
(#26) located on the top of the Return Cylinder
under the Plunger.
7. Turn the Stapler over and remove the four cap
screws (#50), that fasten the Adapter Foot and
Staple Channel Assembly to the Stapler Body and
lift the Assembly off the Body.
8. Remove the Rubber Bumper (#20 or #65).
9. Pull the Driving Blade Assembly out of the
Stapler Body by pulling on the Driving Blade.
10. Hold the Piston Rod (#9) with an 11/16 socket
over its hex end opposite the Piston. Do not use
pliers or a vise anywhere on the metal parts,
they can damage the sealing surfaces.
11. Use box wrenches to remove the 5/8-18 Jam
Nut (#51). Remove the Dowel Pin (#38) and
Driving Blade (#14).
12. Unscrew the Piston from the Piston Rod using
box wrenches and separate the Piston, Piston
Rod and Return Cylinder.
OPERATING INSTRUCTIONS, continued