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opw-es.com
ENGINEERING
21
Drylok
®
Dry Disconnect – 3" Coupler Maintenance
POPPET O-RING (36) REPLACEMENT:
1.
With the poppet linkage sub-assembly removed from the unit (see
“TEAR DOWN INSTRUCTIONS”), replacement of the O-RING, POP-
PET (36) is possible. Refer to SH. 2 of 2, drawing H-52295-PA.
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.
Remove RETAINING RING (24) from the poppet linkage sub-assem-
bly. POPPET GUIDE (8) is now free to slide off POPPET (9). POPPET
GUIDE will clear the poppet linkage sub-assembly without further
disassembly.
3.
Remove old O-RING (36). It should easily slide off POPPET (9). Use
of sharp tools is not recommended.
4.
Clean o-ring sealing surfaces of POPPET (9) and POPPET GUIDE (8)
and check for scratches. Any deep scratches will cause even a new
o-ring to leak. Replace poppet if scratches are found.
5.
To install new O-RING (36), pass o-ring over back of poppet linkage
sub-assembly (i.e. over SHAFT LINK (5) and POPPET LINK (6)) to
the backside of POPPET (9). Re-assemble POPPET GUIDE (8) onto
its diameter in the coupler POPPET. It is best to position the guide
legs of the POPPET GUIDE so that they will clear the POPPET LINK
(6) when in the “open” position (refer to SH. 2 of 2 on drawing
H-52295-PA). Install RETAINING RING (24) into groove in POPPET,
behind the POPPET GUIDE. Make sure RETAINING RING completely
snaps into the groove.
6.
Coupler poppet linkage sub-assembly is now ready to be
reinstalled into the coupler.
ASSEMBLING POPPET LINKAGE SUB-AS-
SEMBLY AND SHAFT (35) INTO BODY (10):
NOTE:
For this stage of assembly, you will need a “dummy adaptor”.
This is nothing more than the nose end of a 5670 Drylok Adaptor. To
get a dummy adaptor, please contact OPW.
1.
With coupler BODY (10) standing upright, sitting on threaded end,
assemble a dummy adaptor end into fixed jaw of BODY (10). (Note:
O-RING, FACE SEAL (37) cannot be in BODY at this point of the
assembly process). The dummy adaptor has the lead-in that allows
the O-RING, POPPET (36) to slide into the bore of BODY (10). The
3" DRYLOK COUPLERS 5770 SERIES:
dummy adaptor must fit snug against its mating surface of BODY in
order for the lead-in to align with BODY bore. An o-ring at the face
seal will not allow proper alignment between the dummy adaptor
and BODY bore. Assembling the poppet linkage sub-assembly into
the BODY without a dummy adaptor properly aligned, or without
one at all, risks o-ring damage that may not be detected.
2.
With the dummy adaptor in place and POPPET LINK (6) oriented as
pictured in SECTION B-B of drawing H-52295-PA SH. 2 of 2 (when
looking down from above), slide poppet linkage sub-assembly
through dummy adaptor, allowing it to drop into coupler BODY (10).
3.
Next, lay coupler BODY down in horizontal position and locate
SHAFT LINK (5) by looking into shaft hole in top of BODY. Install
SHAFT (35) into BODY and through SHAFT LINK. Reinstall HANDLE
(7) onto SHAFT and turn clockwise to pull POPPET (9) back into the
coupler BODY.
4.
The dummy adaptor can now be removed. At this point, POPPET (9)
face should be parallel to, and approximately .06" below coupler
BODY face. Remove SHAFT (35) from the coupler BODY. To do this, it
may be necessary to wiggle SHAFT back and forth. Be careful not to
allow POPPET to come out of coupler BODY.
5.
With SHAFT (35) removed, reinstall PLUG (27), with the flat side up,
into the boss in the bottom of coupler BODY. Insert BEARING (18)
into coupler BODY boss, on top of PLUG. Slide BEARING (28) over
top of SHAFT (35).
6.
To reinstall SHAFT (35), look into top of coupler BODY and fold
SHAFT LINK (5) as shown in SECTION B-B. It may be necessary to
make some poppet linkage sub-assembly adjustments, but try to get
the hex in SHAFT LINK concentric to the hole in the coupler BODY.
Note that when folded up, the front most flat in the SHAFT (35) hex
should be perpendicular to the BODY centerline.
NOTE:
POPPET
LINK (6) of the poppet linkage sub-assembly must be posi-
tioned as shown in SECTION B-B for the coupler to operate
properly.
SHAFT LINK (5) of the poppet sub-assembly should be
lying on top of BEARING (18), previously inserted into BODY.
7.
Note the single flat on the top portion of the SHAFT (35).
When inserting the SHAFT (35) into the BODY (10) and through the
SHAFT LINK (5), this flat on the SHAFT must be facing the threaded
end of the coupler. It may be necessary to reinstall HANDLE (7) onto
SHAFT to aid in SHAFT installation. Wiggle HANDLE and SHAFT
while firmly pushing SHAFT down through the SHAFT LINK and
into coupler BODY.
At this point, the flat on the SHAFT (35) must be facing back (toward
the threaded end of the coupler). POPPET (9) should be about .06"
below the front face of the coupler, which is basically, in all the way.
Looking in the back (threaded end) of the coupler, you should see
SHAFT (35) inserted through SHAFT LINK (5) and BEARING (18).