8. Remove the Rubber Bumper (#29).
9. Pull the Driving Blade Assembly out of the Nailer
Body by pulling on the Driving Blade.
10. Hold the Piston Rod (#8) 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
(#45). Remove the Dowel Pin (#38) and Driving Blade
(#15).
12. Unscrew the Piston from the Piston Rod using box
wrenches and separate the Piston, Piston Rod and
Return Cylinder.
TO REPLACE THE SEALS:
Plunger Seal Set (#30):
1. Remove the Teflon®Seal and its O-ring expander
from the Plunger 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 Teflon®Seal Ring into the seal groove over the
O-ring.
3. Carefully push the Teflon® 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
the Teflon®Seal Ring. DO NOT OVER STRETCH THE
TEFLON®SEAL RING. Be sure the Teflon®Seal Ring
is centered all around the seal groove and not twisted.
4. Wipe off the Seal surface with a clean rag and
lubricate it generously with Pneumatic Light Air Tool
Oil lubricant.
Rubber Seat (#28):
1. Remove the Cylinder Sleeve (#12). The Cylinder
Sleeve would slide out of the Nailer Body when you pull
out the Driving Blade.
2. Remove the metal Support Ring (#27) 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.
Piston U Cup Lip Seal (#17):
1. Remove the old Piston U Cup Lip Seal from the Piston
using a bent paper clip or pick, being careful not to
scratch the inside walls of the seal groove or the edge of
the Piston with the wire hook.
2. Clean out the seal groove. Place a new U-Cup Lip
Seal into the groove. Make sure the lip seal is not
twisted in the groove and the lips face the top of the
Nailer. See the sketch on next page (#17).
3. Carefully wipe off the U Cup Lip Seal surface with a
clean rag and lubricate it generously with Pneumatic
Light Air Tool Oil lubricant.
Return Cylinder U Cup Lip Seal (#18):
1. Use a bent paper clip or pick to remove the old U Cup
Lip Seal from the internal seal groove inside the Return
Cylinder. Be careful not to scratch the inside walls of the
seal groove with the wire hook.
2. Clean out the seal groove. Place a new U Cup Lip
Seal into the groove, be sure it is not twisted in the
groove. Be sure the lips are facing the inside of the
Return Cylinder as shown in the sketch on next page.
Warning: The U-Cup Lip Seals #18 and #19 look alike,
but they are different, DO NOT mix them up.
3. Carefully wipe off the Lip Seal surface with a clean
rag and lubricate it generously with Pneumatic Light Air
Tool Oil lubricant.
Piston Rod U-Cup Lip Seal (#19):
1. Remove the old U-Cup Lip Seal from the seal groove
with a bent paper clip or pick using care not to scratch
the inside walls of the seal groove with the wire hook.
2. Clean out the seal groove and install a new U-Cup Lip
Seal. Be sure the Lips are facing the right direction and
are not twisted in the groove. See the sketch on next
page.
Warning: The U-Cup Lip Seals #18 and #19 look alike,
but they are different, DO NOT mix them up.
3. Carefully wipe off the Lip Seal surface with a clean
rag and lubricate it generously with Pneumatic Light Air
Tool Oil lubricant.
8
OPERATING INSTRUCTIONS, continued...