Dover OPW Rego TA7814-50 Manual

performed only by qualified personnel. All gas MUST be evacuated
from the system before starting repairs.
Installation, usage and maintenance of this product must be in
compliance with all RegO
®
and provisions of NFPA #54, NFPA #58, DOT, ANSI, all applicable
federal, state, provincial and local standards, codes, regulations
and laws.
Inspection and maintenance on a periodic basis is essential.
Be sure all instructions are read and understood before instal-
lation, operation and maintenance. These instructions must be
passed along to the end user of the product.
RegO Rail Tank Car equipment is AAR approved. If repaired, the
continued validity of the AAR approval is contingent upon proper
inspection to determine what needs to be repaired; proper repair
using RegO OEM parts and procedures, proper testing for leakage
and performance following repairs and installation.
ECI EXPRESSLY DISCLAIMS ANY AND ALL LIABILITY – UNDER
ANY THEORY, WHETHER CONTRACT, WARRANTY, TORT OR
OTHERWISE – RELATING IN ANY MANNER TO ANY RAIL TANK
CAR EQUIPMENT REPAIRED USING ANY PRODUCTS NOT MANU-
FACTURED BY ECI.
USE OF ANY PRODUCTS NOT MANUFACTURED BY ECI TO RE-
PAIR ANY RAIL TANK CAR EQUIPMENT WILL INVALIDATE ANY
AND ALL WARRANTIES OF THE RAIL TANK CAR EQUIPMENT,
WHETHER EXPRESS OR IMPLIED.
CAUTION: Contact or inhalation of liquid propane, ammonia and
their vapors can cause serious injury or death! NH
must be released outdoors in air currents that will insure disper-
sion to prevent exposure to people and livestock. LP-Gas must
be kept far enough from any open flame or other source of ignition
to prevent fire or explosion! LP-Gas is heavier than air and may
not disperse or evaporate rapidly if released in still air.
Disassembly and Rebuild Procedure
CAUTION: READ THROUGH ALL OF THESE INSTRUCTIONS, IN-
CLUDING THE NOTICE AND WARNINGS ON THE BACK OF THIS
SHEET, BEFORE BEGINNING ANY DISASSEMBLY OR REPAIR.
NOTE: Repairs must be performed in a clean area. Hands, clothing,
tools and work area must be completely free of oil, grease and foreign
matter to prevent contamination of component parts and valves.
A. Angle Valve Disassembly
EVACUATE ALL GAS FROM THE SYSTEM BEFORE ANY DIS-
1.
ASSEMBLY OR REPAIR. Turn handwheel counterclockwise as
far as it will go to release any gas remaining in the container.
CAUTION: Do not apply force after valve is fully open.
2. Remove the locking pin from the handwheel. Remove the hand-
wheel locknut by turning counterclockwise with a 9/16" wrench
to allow removal of the washer, information disc, and handwheel
so that the locking plate can be removed. Retain all parts.
3. Using a 9/16" wrench, Remove the serrated-flange hex head
screws holding the locking plate to the standoffs. Remove the
locking plate, retain all parts. Place the handwheel and washer
back on the stem and thread the locknut onto the stem and tighten
using 9/16" wrench.
4. Using a 13/16" wrench, remove the four standoffs from the bonnet
by turning counterclockwise. Remove the bonnet assembly from
the valve body by carefully pulling upward using the handwheel.
Carefully place the bonnet assembly on its side to prevent any
damage to the drive stem. See Figure 2.
5. Remove the body gasket and discard.
Seat Disc Replacement:
6. Clamp the square section of the bonnet in a vise.
7. Using 1-1/8" wrench on the stem holder (left hand threads) and
a 1-5/16" wrench on seat disc retainer (left hand threads) turn
clockwise (left hand threads) (as shown in Figure 3) to loosen
the stem holder from the seat disc retainer.
8. Remove and retain the two stem retainers (crescent shaped) once
the stem holder and seat disc retainer are separated.
9. Carefully support the main stem while using a punch to remove
the 3/32" stainless steel spring pin from the drive stem (See Figure
3). Discard the pin after removal.
10. Use a 3/8" wrench on the hex portion of the drive stem, turn
clockwise (left hand threads) to separate the drive stem from the
main stem. Retain the drive stem for reassembly. Clean the old
Loctite from all threads.
NOTE: It is helpful to hold the handwheel to aid in the removal of the
drive stem.
WARNING:
lation, disassembly,
repair and main-
tenance MUST be
instructions as well as requirements
and LP-Gas
3
- See Figures 1,2 & 3
Instal-
TA7814-50 and TA7814-51 Re-
build Kit for TA7814L Tank Car
Valves with A7814L Angle Valve
and A3214 Internal Valve
TA7814L Tank Car Valve
Figure 1
Locking Pin
Locking Plate
Standoff (4)
A7814L
Angle Valve
Flange Outlet
Cap Screws (8)
Manway
A3214L
Internal Valve
11. Remove and discard the old thrust washer and old o-ring.
12. While holding the wrench flat section of the seat disc retainer with
a 1-5/16" wrench, use another wrench to remove the seat disc
retainer nut.
13. Remove and discard the seat disc. Install a new one by pressing
it into the recess of the seat disc retainer as shown in Figure 3.
14. Apply Loctite 271® thread locking compound to the first three
threads of the seat disc retainer.
CAUTION: Do not allow Loctite to contact the seat disc.
15. Thread on the seat disc retaining nut and tighten with a wrench to
240-270 in-lbs (20-22.5 ft-lbs) torque. Stake the nut in two places
at the retainer threads (See Figure 3) to prevent loosening.
Packing Replacement:
16. Remove the handwheel locknut by turning counterclockwise with
a 9/16" wrench to allow removal of the handwheel and washer.
Retain all parts.
17. Using a 1-3/8" wrench with a handle of sufficient length to develop
minimum of 1000 in-lbs (83 ft-lbs) torque, turn the seal housing
counterclockwise and carefully remove from the bonnet and stem.
CAUTION: Do not mar finish of stem.
18. Remove and discard (2) pressure seal rings, jam ring and wiper o-ring
from seal housing and set seal housing aside.
19. Using a suitable wrench on the square section of the stem, unscrew
stem down and out through the bottom of bonnet by turning clockwise
(as viewed from top).
CAUTION: Stem inspection required.
20. Inspect the stem closely for definite signs of wear, nicks
or scratches, in the Stem Sealing Area, see figure 2. If
any mechanical cleaning is needed, use emery cloth or
paper (500-1000 grit) and polish stem sealing area using
a circular motion.
10
R E G O
Y E A R
WARRANTY