Technical Specifications
TO REPLACE DRIVING BLADE (#14):
1. Disconnect the air supply.
2. Remove the four socket head cap screws holding the
Adapter Foot, Foot and Nail Channel Assembly to the
body.
3. Remove the Rubber Bumper.
4. Pull the Driving Blade with pliers until the Piston is fully
extended outward towards the bottom of the cylinder.
5. Use the 15/16” box wrench supplied to unscrew the
Driving Blade Jam Nut and remove it. Hold the Piston
from turning while unscrewing the Jam Nut by holding the
piston hex with the 1-1/8” box wrench supplied.
6. Push out the 1/4” diameter blade retaining Dowel Pin
and remove the broken Driving Blade stub.
7. Install a new Driving Blade in the slot and replace the
Dowel Pin. Screw on the retaining Jam Nut using the
same tools. If the Jam Nut becomes worn and loose after
frequent removals, it should be replaced.
8. Check the fi 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.
SEAL REPLACEMENT:
There are 7 seals that may require replacement. We
recommend that you have your POWERNAIL 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 Nailer fi rst before making
any repairs.
Consult the illustration for the name and location of the
following component parts.
DRIVING BLADE ASSEMBLY REMOVAL:
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 Nailer 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 Nailer over and remove the four cap screws
(#50), that fasten the Adapter Foot and Nail Channel
Assembly to the Nailer 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 Nailer 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 the supplied 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 the
supplied box wrenches and separate the Piston, Piston
Rod and Return Cylinder
TO REPLACE THE SEALS:
Rubber Seat (#19):
1. Remove the Cylinder Sleeve (#13). The Cylinder
Sleeve should slide out of the Nailer Body when you pull
out the Driving Blade Assembly.
2. Remove the metal Support Ring (#17) and Rubber
Seat from inside the Nailer body. Note that the chamfer on
the inside of the Rubber Seat faces the BOTTOM of the
Nailer, do not reverse the direction of the chamfer when
you replace the Rubber Seat.
3. Replace the Rubber Seat, Support Ring and Cylinder
Sleeve. Be sure to re install the steel Cylinder Sleeve with
the chamfered inside edge facing the BOTTOM of the
Nailer
Plunger Seal Set (#21):
1. Remove the Tefl on
®
Seal and its O-Ring expander
from the groove using a bent paper clip or pick. Be sure
not to scratch the inside walls of the seal groove with the
wire hook.
2. Clean out the seal groove. Place a new O-Ring into
the seal groove by stretching it over the Plunger body.
Make sure the O-Ring is not twisted in the groove. Place
a new Tefl on° Seal Ring into the seal groove over the
O-Ring.
3. Carefully push the Tefl on
®
Seal Ring over the edge
of the Plunger with your thumbs and into the groove.
Do this as quickly as possible to reduce stretching of
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