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Repair Kits Available By Part Number Section 2 Page - GAMECO

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WARNING: Installation, disassembly, repair and maintenance must<br />

be performed only by qualified personnel.<br />

MAINTENANCE ON THE UPPER BODY OF THE 7647 SERIES<br />

FILLER VALVE SHOULD BE PERFORMED AFTER ALL GAS IS<br />

EVACUATED FROM THE CONTAINER. EMERGENCY SERVICE<br />

MAY BE CARRIED OUT WITH THE VALVE INSTALLED, BUT ONLY<br />

UNDER THE SAME CONDITIONS REQUIRED FOR RELEASING<br />

LP-GAS (SEE CAUTION).<br />

Installation, usage and maintenance of this product must be in<br />

compliance with all Engineered Controls International, Inc. instructions<br />

as well as requirements and provisions of NFPA #54, NFPA<br />

#58, DOT, ANSI, all applicable federal, state, provincial and local<br />

standards, codes, regulations and laws.<br />

Inspection and maintenance on a periodic basis is essential.<br />

Be sure all instructions are read and understood before installation,<br />

operation and maintenance. These instructions must be<br />

passed along to the end user of the product.<br />

CAUTION: Contact or inhalation of liquid propane, ammonia and<br />

their vapors can cause serious injury or death! NH 3<br />

and LP-Gas<br />

must be released outdoors in air currents that will insure dispersion<br />

to prevent exposure to people and livestock. LP-Gas must be kept<br />

far enough from any open flame or other source of ignition to<br />

prevent fire or explosion! LP-Gas is heavier than air and may not<br />

disperse or evaporate rapidly if released in still air.<br />

Disassembly and <strong>Repair</strong> Procedure<br />

CAUTION: READ THROUGH ALL OF THESE INSTRUCTIONS, IN-<br />

CLUDING THE NOTICE AND WARNINGS ON THE BACK OF THIS<br />

SHEET, BEFORE BEGINNING ANY DISASSEMBLY OR REPAIR.<br />

NOTE:<strong>Repair</strong>s must be performed in a clean area. Hands, clothing, tools<br />

and work area must be completely free of oil, grease and foreign matter<br />

to prevent contamination of component parts and valves.<br />

A. Disassembly<br />

1. Remove cap and save for reassembly.<br />

2. Slightly depress seat disc & retainer assembly and wedge it open to<br />

assure removal of any trapped gas between the upper and lower<br />

checks.<br />

NOTE: If the valve is to remain on the cylinder, hold the lower body with<br />

a second wrench to keep it from being unscrewed while removing the<br />

upper body. If the valve is out of the cylinder, clamp the lower body in<br />

a vise with the filler opening up.<br />

3. Remove and discard upper body gasket (2697-20) if present.<br />

7647B-80 Assembly for<br />

7647 Series Filler Valves<br />

4. Remove upper body or insert from lower body. Save for reassembly.<br />

a. For 7647B & S Series<br />

Remove insert using an allen wrench to develop approximately<br />

250 in/lbs torque.<br />

b. For 7647D, F, H, & HF Series<br />

Remove upper body by turning counterclockwise using a wrench<br />

with a handle of sufficient length to develop at least 1500 in/lbs<br />

torque.<br />

5. Remove and discard seat disc and retainer assembly (7647B-7A),<br />

spring (A3172-5) and lower body o-ring (7647B-9X).<br />

NOTE: Use care not to scratch gasket seal area.<br />

6. Inspect lower body and clean if necessary. Be sure the interior and<br />

gasket seal area are free of dirt, residue, and foreign particles.<br />

B. Reassembly<br />

1. Install new lower body o-ring (7647B-9X) into lower body.<br />

2. Place new spring (A3172-5) into lower body as shown.<br />

3. Insert new seat disc and retainer assembly (7647B-7A) into spring<br />

and guide.<br />

4. Apply two drops of loctite (5555LT) approximately 180° apart onto<br />

threads of insert or upper body.<br />

CAUTION: Loctite must not contact seat disc or gasket.<br />

5. Thread insert or upper body into lower body.<br />

A. For 7647B & S Series<br />

Tighten with allen wrench to 150 to 200 in/lbs torque.<br />

b. For 7647D, F, H, & HF Series<br />

Tighten to 1100 to 1200 in/lbs torque with a suitable wrench.<br />

6. Depress and release seat disc and retainer assembly a few times.<br />

If freedom of movement or proper seating is not possible, disassemble<br />

and repeat steps B2 through B5.<br />

7. Install new upper body gasket (2697-20) on 7647B, S, & D Series.<br />

8. Reinstall valve and/or pressurize cylinder, check valve for proper<br />

operation and check all seal points for leaks using an approved leak<br />

detection solution.<br />

9. Replace cap.<br />

3174-93L Cap & Lanyard<br />

* 2697-20 Upper Body Gasket<br />

Upper Body<br />

Insert<br />

* 7647B-9X Lower Body O-Ring<br />

* 7647B-7A Seat Disc & Retainer Assy.<br />

* A3172-5 Spring<br />

Guide<br />

Lower Body<br />

7647 B & S Series<br />

* <strong>Part</strong>s found in kit 7647B-80<br />

7647D Series

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