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Disassembly Part No. 918623
Disassemble the compact applicator as follows:
1. Remove and keep warning tag (20, not shown) for
reattachment.
2. Unscrew and remove nozzle adapter (22) from
seat assembly (9).
3. Separate gasket (21) from nozzle adapter (22).
4. Unscrew and remove four cap screws (17) and
lockwashers (18) from fluid body (13).
5. Separate o-ring (8) from seat assembly (9).
WARNING
To reduce the risk of serious injury, exercise cau-
tion when removing the compact applicator cylin-
der, which is spring–loaded and could project
forcefully through the air if not removed properly.
6. Unscrew four cap screws (10) evenly to loosen
cylinder (11) and relieve tension in spring (1).
7. Remove cap screws (10) and cylinder (11) from
fluid body (13) and piston (2). Remove spring (1).
8. Push piston (2) down enough to gain access to the
wrench flats on needle assembly (7).
9. Unscrew and remove piston (2) from needle as-
sembly (7).
10. Separate o-ring (3) from piston (2).
11. Push the needle assembly (7) through needle seal
(6) and remove it from fluid body (13).
12. Push needle bearing (5) and seal (6) out of fluid
body (13).
13. Separate o-rings (3 and 4) from fluid body (13).
10
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Service: 918623
Assembly – Part No. 918623
Reassemble the compact applicator as follows:
NOTE: Repair Kit 918624, listed on page 11, contains
the replacement parts to service the applicator. For
best results, replace the original parts with the new
parts in the repair kit.
Prior to installation, lubricate all seals and o-rings with
PARKER-O-LUBEt or an equivalent lubricant. Check
with the material supplier for a compatible lubricant.
1. Be sure all parts are free of solid material residue.
2. Install needle bearing (5) and needle seal (6) in
3. Install o-rings (3 and 4) in the fluid body (13).
4. Install o-ring (3) onto piston (2).
5. Push needle assembly (7) carefully through needle
6. Apply Loctiter sealant (19) or an equivalent to
7. Assemble piston (2) to needle assembly (7).
8. Position spring (1) on top of piston (2).
9. Install cylinder (11) over piston (2) and spring (1).
10. Assemble cylinder (11) to fluid body (13) with four
11. Position o-ring (8) in groove on seat assembly (9)
12. Install gasket (21) in nozzle adapter (22).
13. Screw nozzle adapter (22) onto seat assembly (9).
14. Reattach warning tag (20, not shown).
15. Reinstall applicator on its mounting.
fluid body (13).
seal (6) and needle bearing (5).
threads of needle assembly (7).
Note the position of the 1/8 NPT air-to-close port.
WARNING
To reduce the risk of serious injury, exercise cau-
tion when installing the compact applicator cylinder,
which is spring-loaded and could project forcefully
through the air if not installed properly.
cap screws (10), tightening the screws evenly to
control compression of spring (1).
and assemble the seat assembly to fluid body (13)
with four cap screws (17) and lockwashers (18).
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