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2 – Instructions
MXP16N
Parts Sheet #8100-4109_04_MXP16N_ps
CYLINDER DISASSEMBLY INSTRUCTIONS
Begin with a clean work area. Make sure all replacement parts are avail-
able and have no visual damage or defects. The following tools and
materials are recommended for proper disassembly and assembly. (Exact
wrench sizes will vary depending on cylinder size.)
• Allen wrench set (English and Metric)
• Torx wrench set
• Small straight edge screwdriver
• Socket wrench & socket set
• Needle nose pliers
• Tin snips
• Razor Blade
• RheoGel TEK664 grease
For best actuator performance it is recommended that the following
instructions be read and followed carefully.
1. REMOVE BAND CYLINDER FROM MACHINERY
Remove all mounting hardware and air connections, if present, from
the Cylinder Heads (10) and/or Piston Bracket (1).
2. REMOVE BAND CLAMPS
Loosen Set Screws (18) on Dust Band Clamp (13). Remove Screws
(9) from Cylinder Heads (10). Remove Seal Band Clamp (12) from
between Dust Band (20) and Seal Band (19). Repeat for other
Cylinder Head.
3. REMOVE DUST BAND
Remove End Caps (5) from both ends of the Piston Bracket (1) by
removing Screws (23). To remove Dust Band (20), lift one end and
pull the Band through the Piston Bracket. The Band is magnetically
retained so some resistance will be present when removing.
4. REMOVE HEADS
Remove the four Head Screws (24) to free each Cylinder Head (10).
Remove each Head by rocking it up and down until the Head is free
from the Cylinder Tube (26).
DO NOT TWIST!
Remove the O-ring
(14) from both Heads with a small straight edge screwdriver.
5. REMOVE SEAL BAND
CAUTION:
Sealing Band edges are sharp. Grasp the top and bottom
of the Band when removing, not the edges
.
Slide Piston Bracket (1) out of the Cylinder Tube (26). Remove the
Sealing Band (19) through the slot in the Tube.
6. DISASSEMBLE PISTON BRACKET
Remove Wipers (7) from the Piston Bracket (1). With a small straight
edge screwdriver, remove the U-Cups (3) from both Pistons (2).
Remove the Cushion Seal (4) from each Piston. Remove the Pistons
(2) by inserting a small allen wrench into the holes on each side of
Piston Bracket (1) to disengage the Pistons. With a small screwdriver,
remove the Band Ramps (6) and the Plastic Bearings (8) by disengag-
ing the side retaining tabs for each. Keep the Piston Bracket (1) and
the two Pistons (2) for reassembly.
CYLINDER ASSEMBLY INSTRUCTIONS
1. CLEAN AND LUBRICATE
Thoroughly clean all components, particularly the Tube Bore, Tube
Slot, Sealing Band and Dust Band. Thoroughly lubricate the Tube
Bore with a thin, uniform layer of RheoGel TEK664 grease.
2. PISTON BRACKET ASSEMBLY
With the Piston Bracket (1) in hand, install the Band Ramps (6),
with small end down, so the ends on each side snap into the hole
of the Piston Bracket. Install one Plastic Bearing (8) on each side
of Piston Bracket and between the Band Ramps by snapping ends
into holes. Note, install Plastic Bearings with arrows pointing up.
Install the Pistons (2) into the Piston Bracket (1), with Band Ramp up,
until Piston snaps into hole in Piston Bracket. Install new lubricated
U-Cups (3) (seal lips facing out), and Cushion Seals (4)
(small end facing out). Slide new Wipers (7) into the groove
on the Piston Bracket (1) until flush with end. Trim off
excess flush to other end of Piston Bracket. Wipers need
to be installed with the flare edges facing outward.
3. INSTALL INNER SEAL BAND
CAUTION:
Metal edges of Sealing Band are sharp. Exercise caution
to avoid injury to yourself while installing. Handle Sealing Band with
care. Do not damage edges while handling.
Insert Sealing Band (19) into Cylinder Tube (26) by laying
the Band out along the length of the actuator and passing it
sideways through the slot in Tube. With flat side facing up
(ground side facing down), position the Band so the length
of band sticking out the end of the Tube is as long as Piston
Assembly. (5 - 10 inches or 12 - 25 cm)
4. INSTALL PISTON ASSEMBLY
Place generous amounts of grease around bore of Tube (26) and on
exterior surfaces of both Pistons (2), U-Cups (3), Band Ramps (6) and
Plastic Bearings (8). Use the 6-inch length of Seal Band included
with repair kit, or a short length of the old Seal Band, slightly kink
the Band upwards, one inch (25mm) from the end. Insert into slot
between the Band Ramp (6) and Piston (2) on the Piston Bracket (1),
and stop against opposite end of the Piston Bracket and up the short
length of inserted Band. Once the Seal Band is through the Piston
Bracket, remove the short length of band material and discard.
Grasp the Piston Bracket while holding the Wipers in place with your
fingers. Flare the Wiper edges out, while inserting the Piston Bracket
partway into the Tube. Do not force the Piston Bracket. Place a finger
over the opposite end of the Piston Bracket to keep the Wipers in
place, while pushing the remainder of the Piston Bracket into the
Tube (26). With the Piston Assembly experiences resistance, use a
small screwdriver to press in the ends of the Band Ramps (6) and
the Plastic Bearings (8) where it enters the Tube. With the Piston
Assembly in place, slide the length of the Tube until the end of the
Piston just extends out of the Tube. Wipe off any excess grease from
the end of the Piston and Tube. Position Piston Assembly so it is fully
engaged in the Tube.
Note:
If Tube and Piston Assembly were greased properly, excess
grease should be present as the Piston exits the end of the Tube. If
there is no excess grease present, remove the Piston Assembly and
re-grease the Tube, then re-install the Piston Assembly.
5. INSTALL HEADS
CAUTION:
Twisting the Head (10) during installation may cut the
O-ring (14) resulting in excessive leakage during operation.
Install new lubricated O-Ring (14) onto each Head (10). Position Piston
Assembly near the end of the Tube in which the Head is being installed.
Position the Seal Band (19) so .394" (10mm) is protruding from the
end of the Tube (26) and centered with the slot in the Tube. With black
marker, make vertical line where the Seal Band intersects with the Tube
and a horizontal line at the center of the Seal Band and slot. Install
Head into Tube using a slight up and down rocking motion (not side-to-
side or twisting) until the Head is flush with the end of the Tube. Secure
Head to Tube by installing Head Screws (24) applying a torque of 10
in-lbs (1.13 N-m). Verify horizontal mark on Seal Band is still centered
to the Tube slot. If not, remove Head and try again until centered. Verify
vertical mark on Seal Band is still aligned with end of Tube. If not, use
needle nose pliers to pull on Seal Band until properly located.
Move Piston Assembly to other end of the Tube and repeat the steps
above to install the other Head. Trim Seal Band with tin snips if need-
ed to achieve .394" (10mm) from end of Tube.
FLAT
SIDE
GROUND SIDE
FLAT SIDE
OF WIPER
FACES OUT
GROOVE
TO INSIDE
