Parker Racor RK19506 Instructions

RK19506 Stem Repair Kit
Instruction Part Number 19512 Rev A
Instructions:
Valve can be repaired in place without
removal or disassembly. If assembly will
be serviced in place, turn off fuel tank
supply valve (or any others) to avoid fuel
spillage, then proceed as follows:
1. Prior to disassembly, note position
of item 2 (handle) in relation to valve
body for reassembly. All off position
recommended.
2. Remove items 1, 2, 3, 4, 5, and 6 in
order listed, note position of flat on item
6 (stem).
3. Remove item 7 (O-ring) from item 5
(bonnet) being careful not to scratch
gland surface and discard. Lube new
item 7 (O-ring) with Parker Super O-lube
(or equivalent) and install into inside grove
of item 5 (bonnet).
4. Lube item 8 (O-ring) and install new item
6 (stem) into valve body ensuring that
bottom tab properly engages slot in ball
as shown, and flat on top of stem is in
correct position as noted in step 2 above
- this is very important.
Contact Information:
Parker Hannifin Corporation
Racor Division
P.O. Box 3208
3400 Finch Road
Modesto, CA 95353
phone 800 344 3286
209 521 7860
fax 209 529 3278
racor@parker.com
www.parker.com/racor
1
Acorn nut
2
Handle
3
Lock nut
Crush
4
washer
5
Bonnet
9
Bonnet to
body O-ring
5. Lube item 9 (bonnet to body O-ring) and
instal in gland of item 5 (bonnet). Apply
1-2 drops of loctite #242 Threadlocker
(or equivalent) onto threads of item 5
(bonnet), then slide over item 6 (stem)
and thread into valve body. Torque item 5
(bonnet) to 33-50 foot pounds.
6. Place new item 4 (washer) over item 6
(stem) and into groove of item 5 (bonnet).
Thread item 3 (lock nut) onto item 6
(stem) finger tight only. Apply 1-2 drops of
Loctite #242 Threadlocker (or equivalent)
to thread between item 3 (lock nut) and
item 6 (stem).
7. Place item 2 (handle) onto item 6 (stem)
Note: Racor text faces outward toward
user. Apply 1-2 drops of Loctite #242
6
Stem
7
Stem O-ring
8
Bonnet O-ring
Threadlocker (or equivalent) onto threads
of item 1 (acorn nut) and install onto item
6 (stem). Torque item 1 (acorn nut) to 5-7
foot pounds, while securing item 3 (lock
nut) with a wrench.
8. Rotate valve handle and feel operation
through a full rotation. To increase
resistance, tighten item 3 (lock nut)
towards item 5 (bonnet). To reduce
resistance, loosen item 3 (lock nut) away
from item 5 (bonnet) (usualy 1/16 turn is
all that is needed). Repeat step 7.
9. Open any valves that were closed prior to
disassembly. Start the engine and check
for leaks. Correct any leaks with the
engine off.