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ENGINEERING
17
Drylok
®
Dry Disconnect – 2" Coupler Maintenance
POPPET O-RING (11) REPLACEMENT:
1.
With the poppet linkage sub-assembly removed from the unit (see
“TEAR DOWN INSTRUCTIONS”), replacement of the O-RING, POP-
PET (11) is possible. Refer to SH. 2 of 2, drawing H-20905-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 COTTER PINS (12) from LOCK PIN (36) and remove LOCK
PIN from poppet linkage sub-assembly. With the LOCK PIN removed,
LOCK RING (37) can slide off the backside of POPPET (1). POPPET
GUIDE (10) is now free to slide off POPPET (1). No further disassem-
bly of the poppet linkage sub-assembly is required.
3.
Remove old O-RING (11). It should easily slide off POPPET (1). Use of
sharp tools is not recommended.
4.
Clean o-ring sealing surfaces of POPPET (1) and POPPET GUIDE (10)
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 (11), slide o-ring over backside of POPPET (1).
Re-assemble POPPET GUIDE (10) 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 (22) when in the “open”
position (refer to SH. 2 of 2 on drawing H-20905-PA). Install LOCK
RING (37) over POPPET, behind POPPET GUIDE. Install one COTTER
PIN (12) through hole in LOCK PIN (36). Next, install end of LOCK
PIN (36) without COTTER PIN (12) behind LOCK RING (37), through
POPPET (1) and POPPET LINK (22)/BEARING (39). Position LOCK
PIN so that open hole for COTTER PIN is accessible. Install second
COTTER PIN (12) through open hole of LOCK PIN (36).
6.
Coupler poppet linkage sub-assembly is now ready to be reinstalled
into the coupler.
ASSEMBLING POPPET LINKAGE SUB-
ASSEMBLY AND SHAFT (16) INTO BODY (8):
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 (8) standing upright, sitting on threaded end,
assemble a dummy adaptor end into fixed jaw of BODY (8). (Note:
O-RING, FACE SEAL (32) cannot be in BODY at this point of the as-
sembly process). The dummy adaptor has the lead-in that allows the
O-RING, POPPET (11) to slide into the bore of BODY (8). The 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 (22) oriented as
pictured in SECTION B-B of drawing H-20905-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 (8).
3.
Next, lay coupler BODY down in horizontal position and locate
SHAFT LINK (45) by looking into shaft hole in top of BODY. Install
SHAFT (16) into BODY and through SHAFT LINK. Reinstall HANDLE
(6) onto SHAFT and turn clockwise to pull POPPET (1) back into the
coupler BODY.
4.
The dummy adaptor can now be removed. At this point, POPPET (1)
face should be parallel to, and approximately .06" below coupler
BODY face. Remove SHAFT (16) 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 (16) removed, reinstall PLUG (29), with the flat side up,
into the boss in the bottom of coupler BODY. Insert one BEARING
(18) into coupler BODY boss, on top of PLUG. Slide second BEARING
(18) over top of SHAFT (16).
6.
To reinstall SHAFT (16), look into top of coupler BODY and fold
SHAFT LINK (45) 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 (45)
hex should be perpendicular to the BODY centerline. NOTE: POPPET
LINK (22) of the poppet linkage sub-assembly must be positioned as
shown in SECTION B-B for the coupler to operate properly. SHAFT
LINK (45) of the poppet linkage 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 (16). When
inserting the SHAFT (16) into the BODY (8) and through the SHAFT
LINK (45), this flat on the SHAFT must be facing the threaded end of
the coupler. It may be necessary to reinstall HANDLE (6) 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 SHAFT (16) must be facing back toward the
threaded end of the coupler. POPPET (1) 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 (16)
inserted through SHAFT LINK (45) and lower BEARING (18).
2" DRYLOK COUPLERS 5770 SERIES:
