IMPORTANT:
OPW products should be used in compliance with applicable federal, state, provincial, and local laws and regulations. Product selection should be
based on physical specifications and limitations and compatibility with the environment and materials to be handled. OPW MAKES NO WARRANTY OF FITNESS
FOR A PARTICULAR USE. All illustrations and specifications in this literature are based on the latest product information available at the time of publication. OPW
reserves the right to make changes at any time in prices, materials, specifications and models and to discontinue models without notice or obligation.
20
Drylok
®
Dry Disconnect – 3" Coupler Maintenance
3" DRYLOK COUPLERS 5770 SERIES:
WARNING
OPW ENGINEERED SYSTEMS cannot be held
responsible for the integrity of a Field rebuilt product. To minimize the
possibility of physical injury and obtain the best possible functioning
product after rebuilt, it is strongly recommended that the procedures
outlined be followed to Tear down, Re-assemble and Test the product
before placing the unit back into service. Reference the enclosed
illustrations to facilitate identification of parts.
Recommended tools for repair: Blind adaptor 5671-0730 (consult facto-
ry), 5/8" and 11/16" hex wrench, 1" and 1-1/4" socket wrench, 3/16"
Allen wrench, torque wrench with flathead screwdriver attachment,
hammer, and needle-nose pliers.
NOTE:
The number in parentheses ( ) refer to balloon numbers on the
enclosed drawings. Numbers in quotes “ ” refer to other assembly steps
of this procedure.
Drylok coupler repair kit should contain eight items as follows
(see drawings): PACKING (17), BEARING (18), WASHER, TEFLON (19),
BEARING (20), BEARING (28), O-RING (36), O-RING (37) and
SAFETY ADJUSTING SCREW (38).
TEAR DOWN INSTRUCTIONS:
NOTE:
Remove coupler from service and clean before
attempting to disassemble unit. Do not leave pipe or fittings
attached to coupler because it will be necessary to reach in
the threaded end of the coupler to disassemble. It is suggested
that the coupler be secured in a vice or similar fixture to
facilitate working on the unit. Flats on the sides of the coupler
are provided for this purpose.
1.
Remove HANDLE (7), by loosening SOCKET HD. SCREW
(21). It may be necessary to gently pry handle off using a flathead
screwdriver. HANDLE EXTENSION (2) can be lifted off once HANDLE
is removed.
2.
Loosen JAM NUT (16) and remove SCREW (4) and JAM NUT (16)
from coupler BODY (10). Once this is done, it is possible to lift off
RAMP (3), WASHER (14), WASHER, TEFLON (19), BEARING (20),
WASHER (39), SAFETY RELEASE BUTTON (42) and SPRING (40). This
can be done without removing CLAMP (11).
3.
It is now possible to pull SHAFT (35) out of BODY (10). Reinstall
HANDLE (7) back onto SHAFT (35). Snug SOCKET HD. SCREW (21).
Rotate HANDLE (7) counter-clockwise to “open” position. This moves
POPPET (9) out of coupler BODY and unbinds the poppet sub-assem-
bly linkage. Lightly tap on underside of HANDLE (7) with a hammer
to remove SHAFT (35), BEARING (28), two WASHERS (15) and
PACKING (17), all at the same time.
4.
Once the SHAFT (35) is removed, the poppet sub-assembly can be
pulled out the front (fixed jaw) end of the coupler BODY. Remove
BEARING (18) and PLUG (27) from coupler BODY. Do not discard PLUG
(27). It will be reinstalled at a later time. Remove HANDLE (7), PACK-
ING (17) and WASHERS (15) and BEARING (28) from SHAFT (35).
ATTENTION
Do not push the poppet sub-assembly
into the coupler BODY (10)! In other words, do not push it the
wrong way! The poppet linkage sub-assembly will get stuck in
the BODY and subsequent attempts at removal may damage
the seal seat.
5.
You are now able to replace all seals, bearings and washers that
need to be replaced.
SEAL REPLACEMENT:
There are only three possible leak paths where there are seals in the
coupler body:
•
Coupler O-RING, FACE SEAL (37)
•
Poppet O-RING (36)
•
PACKING (17) around the SHAFT (35)
COUPLER O-RING, FACE SEAL (37)
REPLACEMENT:
1.
Replacement of the coupler O-RING, FACE SEAL (37) is possible with
no disassembly of the coupler. Furthermore, it is not necessary to
remove the coupler from service.
CAUTION
Fluid in the coupler will have worked its way
into the o-ring groove behind the o-ring. The backside of the
o-ring will be coated with this fluid even if the unit
was cleaned. Take appropriate measures.
WARNING
Improper removal of o-ring could result
in scratched seal surface in the seal groove. Follow
instructions carefully!
2.
To remove old o-ring, it is best to simply stick it with a thin,
sharp object and pry the local area out of the groove. To avoid
scratching the seal seat, avoid pushing the sharp object completely
through the o-ring.
3.
Grab the pried out section of the o-ring and pull completely out.
4.
Clean groove and check for scratches. Any deep scratches will cause
even a new o-ring to leak. Replace unit if scratches are found.
5.
To install new O-RING, FACE SEAL (37), align o-ring with groove and
push one area of the o-ring into the groove. Next, work the rest of
the o-ring into the groove by applying pressure with thumbs.
HINT:
Recurring O-RING, FACE SEAL failures are a result of failure to
clean coupler and adaptor mating surfaces before coupling, or a raised
surface on the adaptor resulting from a nick or embedded dirt.
