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© 2012 Finishing Brands UK Ltd.                                                     

9

 

Parts Replacement/Maintenance 

 

AIR VALVE INSTRUCTIONS 

 

Servicing Air Valve 

Reasons to service air valve: 
 

A)  Air valve not functioning correctly (may need 

cleaning). 

B)  Routine maintenance. 
 
C)  Air leaks (advise replacement, see p10) 

 

1.  Remove trigger using the tool supplied (SPN-8) or 

TORX T20 key. (See fig 1 & 2) 

2.  Unscrew air valve using SN-28 (14 mm) spanner. 

(See fig 3) 

3.  Remove air valve by gripping stem. (See fig 4) 

4.  Remove spring with spring pad. (See fig 5) 

5.  DO NOT REMOVE REAR SEAL (35) FROM GUN 

BODY. (See fig 6) 

6.  DO NOT REMOVE PLASTIC CAGE FROM AIR 

VALVE BODY AS THIS MAY DAMAGE THE CAGE. 
(See fig 7) 

7.  CLEAN 

a.  Remove all paint build up. (See fig 8) 

b.  The 4 poppet holes must be clear. (See fig 9) 

c.  Stem must be free to float in poppet. (See fig 10) 

d.  Stem must slide through cage bore with slight 

resistance (due to seal). 

e.  Rear seal must look clean and in position in the 

bore. (See fig 6) 

f. 

If any of the above cannot be rectified, replace 
the air valve (See Replacing Air Valve p10). 

8.  Replace spring ensuring the end with the plastic 

bearing pad goes in first. (See fig 5) 

9.  Insert air valve assembly into gun and carefully feed 

over the spring and through the rear seal. (See fig 
11) 

10.  Tighten air valve assembly using fingers first, and 

then tighten with SN-28 (14mm) Spanner. (See figs 
12 & 3) 

11.  Replace trigger. (See figs 2 & 1) 

12.  If there is an air leak through the gun, the air valve 

may need replacing (See Replacing Air Valve). 

 
 

Содержание GFG PRO

Страница 1: ...SB E 2 810 ISS 05 Technical Bulletin GFG PRO Gravity Spray Gun AUTOMOTIVE REFINISHING EN...

Страница 2: ...ical Data 4 Safety Precautions 5 Parts List 6 Exploded parts View 7 Installation Operation Preventive Maintenance Cleaning 8 Parts Replacement Maintenance 9 A Servicing Air Valve 9 B Replacing Air Val...

Страница 3: ...Aircaps and 3 Nozzles C1 for base and clearcoat application C2 is used for higher viscocity materials The ordering code for the spray guns is Eg GFGPRO C1 14 where C1 C1 Aircap Alternative is C2 14 1...

Страница 4: ...G 1 4 1 4 NPS 15 500cc Acetal Cup easy clean anti static 7 Self Adjusting Needle Packing for trouble free operation 16 Cup Lid with Drip Free Vent avoid drips 8 Trigger ergonomic for comfort 17 Air Va...

Страница 5: ...erial before spraying If in doubt contact your material supplier The use of respiratory protective equipment is recommended at all times The type of equipment must be compatible with the material bein...

Страница 6: ...rflow Valve PRO 411 K 1 13 Body Bushing 1 45 Circlip 25746 007 K5 1 14 Body Bushing Seal SN 6 K 1 46 Valve Head 1 15 Fluid Needle GFGPRO 320 K 1 47 Washer 1 16 Needle Spring 1 48 Valve Body 1 17 Needl...

Страница 7: ...2012 Finishing Brands UK Ltd 7...

Страница 8: ...e 10 The pattern size can be reduced by turning spreader valve knob 23 clockwise 11 Hold gun perpendicular to surface being sprayed Arcing or tilting may result in uneven coating 12 The recommended sp...

Страница 9: ...g 7 7 CLEAN a Remove all paint build up See fig 8 b The 4 poppet holes must be clear See fig 9 c Stem must be free to float in poppet See fig 10 d Stem must slide through cage bore with slight resista...

Страница 10: ...Tool 56 See figs 18 19 6 Clean air valve bores in gun body with the brush supplied in the kit 7 Place new rear seal onto Service tool 56 grooves must fit in service tool form See fig 20 8 Push rear se...

Страница 11: ...then tighten See figs 30 and 31 19 Insert fluid needle all the way into gun body seating in fluid nozzle See fig 34 20 Insert needle spring spring pad and fluid adjusting knob See figs 28 27 Reinstal...

Страница 12: ...ring See fig 47 9 Place a new Spray Head Seal onto the front of the gun making sure the flat on the seal is aligned with the flat in the gun See fig 48 10 Fit the Front Plate onto the Spray Head fit...

Страница 13: ...n air cap Chart 2 Fluid Nozzle Range Fluid Needle NOTE When replacing the fluid nozzle or fluid needle replace both at the same time Torque to 18 20 nm 13 15 ft lbs Don t over tighten the fluid nozzle...

Страница 14: ...ot inverted it is on the fluid nozzle Clean nozzle If problem persists renew nozzle Heavy centre pattern Spreader adjustment valve set too low Atomising pressure too low Material too thick Turn out co...

Страница 15: ...nd out needle adjusting screw or use larger nozzle size Fluid leaking from packing nut Packing worn Replace Fluid leaking or dripping from front of gun Fluid nozzle or fluid needle worn or damaged For...

Страница 16: ...office Finishing Brands UK Limited 400 Capability Green Luton Bedfordshire LU1 3AE UK Registered in England No 07656273 Vat No GB 113 5531 50 ACCESSORIES DGi PRO Digital Pressure Gauge DGIPRO 502 BAR...

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