PHD CT Series Manual

PART NO: 6441-539
®
DISASSEMBLY PROCEDURE
1) WARNING: All air pressure in unit must be relieved prior to disassembly
of cylinder.
2) During disassembly, be careful to avoid scratching sealing areas.
3) Mark top of tool plate to ensure proper orientation to housing for
reassembly. Locate wrench on piston rod flats and remove screw.
Remove tool plate and guide rod assembly (guide rods can remain
attached to tool plate.)
4) Remove foot mount brackets if present.
5) Remove retaining rings at both ends.
6) Press on rod end to remove plug (opposite rod).
7) Pull on rod to remove bushing, noting orientation of components and
their relationship to ports. (FIGURE 1)
8) Remove all seals, noting orientation.
9) Clean and inspect all components. Worn or damaged components
should be replaced.
SERIES CT CYLINDER REPAIR PROCEDURES
PHD, Inc. makes no warranty as to the fitness of its products or as to the length of service life after being repaired or parts replaced by anyone other than authorized employees of PHD, Inc. be
liable for loss of profits, indirect, consequential, or incidental damages arising out of the use of PHD products.
FIGURE 1
REASSEMBLY PROCEDURE
1) Be careful to avoid damaging seals during assembly.
2) A petroleum-based oil or grease used for lubrication of air cylinders
should be used during assembly.
3) Retaining rings should always be installed with sharp edge outward
from cylinder.
EXTEND END
RETRACT END
RETAINING RING
RETAINING RING
BUSHING O-RING
(20-63mm) STATIC
O-RING
STATIC
O-RING
OPTIONAL SHOCK PAD
PISTON & ROD ASSEMBLY
(SINGLE ROD)
PISTON & ROD ASSEMBLY
(DOUBLE ROD)
2X GUIDE ROD
PISTON ROD SCREW
2X GUIDE ROD SCREW
ROD BUSHING
PISTON SEAL
ROD SEAL
TOOL PLATE
BORE PLUG
(SINGLE ROD)
OPTIONAL SHOCK PAD
(SINGLE ROD)
OPTIONAL
SHOCK PAD
(DOUBLE ROD)
PISTON SEAL
ROD SEAL
ROD BUSHING
(DOUBLE ROD)
HOUSING
continued on reverse side
P.O. Box 9070, Fort Wayne, IN 46899
1-800-624-8511
For additional technical assistance, call:
J OR K MOUNTS

BORE
mm
12
16
20
25
32
40
50
63
STD
EXTEND
IN
IN
—
—
—
—
—
—
-BB
EXTEND
OUT
OUT
—
—
—
—
—
—
-BB
RETRACT
OUT
OUT
OUT
OUT
OUT
OUT
OUT
OUT
CTS & CTD CTD
STD
RETRACT
IN
OUT
OUT
OUT
OUT
OUT
IN
IN
GUIDE ROD
GUIDE ROD BUSHING
ROD
TOOL PLATE
BODY
GUIDE ROD
SCREW
PISTON ROD
SCREW
PLUG (single rod units only)
1) Lubricate o-ring and place into second groove of body. (FIGURE 2)
2) For standard units, place bore plug into body and secure with
retaining ring.
3) For shock pad units, place shock pad at bottom of cylinder grooves,
making sure shock pad is flat and cannot slide into bore. Then install
bore plug onto shock pad and secure with retaining ring.
BUSHING
1) Replace and lubricate seals. Care should be taken to ensure proper
orientation of rod seal and bushing. (FIGURE 3)
PISTON
1) Lubricate and replace piston seal.
PISTON AND ROD TO BODY (single rod units only)
1) Lubricate cylinder bore, piston rod, seals, and bushings.
2) Lubricate o-ring and place into second groove in body for bushing end.
(FIGURE 2)
3) Assemble bushing onto rod using a turning motion to work rod seal
over rod end. Check for proper orientation.
4) Place piston rod assembly into cylinder bore and press bushing onto
static o-ring seal and secure with retaining ring.
PISTON AND ROD TO BODY (double rod units only)
1) Lubricate cylinder bore, piston rod, seals, and bushings.
2) Lubricate o-ring and place into second groove in body for bushing end.
(FIGURE 2)
3) Assemble one bushing onto rod using a turning motion to work rod
seal over rod end. Check for proper orientation.
4) Place piston rod assembly into cylinder bore and press bushing onto
static o-ring seal and secure with retaining ring.
5) Place the other bushing onto rod using a turning motion to work rod
seal over rod end. Check for proper orientation.
6) Press second bushing static o-ring seal and secure with retaining ring.
FIGURE 3
PART NO: 6441-539
SERIES CT CYLINDER REPAIR PROCEDURES (continued)
20-63mm EXTEND END
BUSHING SHOULD
ALWAYS BE ASSEMBLED
IN THIS ORIENTATION
OUT IN
CTD ONLY
ORIENT ROD SEAL AS
SHOWN REGARDLESS
OF BUSHING ORIENTATION
SEE DETAIL A
ORIENT ROD SEAL AS
SHOWN REGARDLESS
OF BUSHING ORIENTATION
SEE DETAIL B
LONG
FIGURE 4
FIGURE 2
FIRST GROOVE IS THE
SNAP RING GROOVE
SECOND GROOVE IS
THE O-RING GROOVE
TOOL PLATE TO ROD AND GUIDE RODS
1) If used, ensure that foot mount brackets are attached to body prior to
attaching the tool plate and guide rod assembly to the piston rod.
2) Lubricate guide rod bushings in body (FIGURE 4).
3) Apply thread locker to guide rod screws and loosely assemble guide
rods to tool plate. Assemble guide rods and tool plate to body (if
rebuilding unit, tool plate and guide rods must be reassembled with the
same orientation to body as when originally assembled at factory).
4) Apply thread locker to piston rod screw and loosely assemble rod to
tool plate.
5) With tool plate in retracted position, torque guide rod screws to tool
plate per CHART 1. Hand cycle unit to check for free movement. Loosen
and re-torque guide rod screws if binding occurs.
6) With tool plate in retracted position, torque piston rod screw to tool
plate per CHART 1. Loosen and re-torque screw if binding prevents unit
from cycling at 20 psi [1.4 bar].
BORE
SIZE
12/16
20/25
32/40
50/63
in-lb
41
60
60
130
Nm
4.6
7
7
15
GUIDE ROD
SCREW TORQUE
in-lb
41
110
300
450
Nm
4.6
12.5
34
51
PISTON ROD
SCREW TORQUE
CHART 1
P.O. Box 9070, Fort Wayne, IN 46899
1-800-624-8511
For additional technical assistance, call:
PLACE LONG SIDE
OF BUSHING IN
ORIENTATION AS
SHOWN IN CHART
OUT
IN
LONG
SEE CHART FOR
12 & 16mm EXTEND END
BUSHING ORIENTATION
DETAIL A DETAIL B
EXTEND RETRACT
BUSHING AND ROD
SEAL ORIENTATION