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6

AIR VALVE REPLACEMENT

CLEANING 

(Continued)

WIRE AND BALL ASSEMBLY AND SEAT REPLACEMENT

1. Engage the trigger safety.
2. Shut off fluid pump and disconnect its air or power

supply.

3. Release pressure from the entire fluid system, from

the pump to the spray gun.

4. Remove trigger (20) by removing the trigger stud

(13) and the trigger screw (12).

5. Remove air valve assembly (21).
6. Replace air valve assembly (21).
7. Reinstall trigger (20), trigger stud (13) and trigger

screw (12).

Refer to assembly drawing on page 7 to locate numbered
items.

1. Engage the trigger safety.
2. Shut off fluid pump and disconnect its air or power

supply.

3. Release pressure from the entire fluid system, from

the pump to the spray gun.

4. Remove tip guard assembly (1), air cap (2) and spray

tip (3). Remove trigger (20) by removing the trigger
stud (13) and the trigger screw (12).

5. Remove the AA4000 needle packing cartridge (8).
6. Carefully install new AA4000 needle packing 

cartridge (8).

7. Remove fluid seat (4) and o-ring.
8. Install new fluid seat (4) and o-ring.
9. Reinstall trigger (20), trigger stud (13) and trigger

screw (12).

10. Reinstall air cap (2), spray tip (3) and tip guard

assembly (1).

11. Using a rag dampened with solvent, wipe the exteri-

or surface of the gun. Additionally, some solvents are
prohibited from being used for cleaning. The opera-
tor must take care to use only approved cleaning sol-
vents for equipment cleaning. These materials are

clearly labeled as approved for cleaning and wash off
operations. If the operator has any question on
selecting appropriate cleaning solvents, the operator
should consult a supervisor or plant environmental
staff.

ITEM

PART

NO.

NO.

DESCRIPTION

QTY.

1

54-4983

TIP GUARD ASSEMBLY .............. 1

2

54-4978

AA4 AIR CAP 

(Standard)

.............. 1

54-4980

AA2 AIR CAP 

(Optional)

................ 1

3

113-0XXXX

CARBIDE TIP ASSEMBLY ............ 1

(See Tip Selection Chart, pg. 8)

4

54-4960*

FLUID SEAT 

(Tungsten Carbide

........ 1

Standard or UHMW Optional, 54-4926)

4A

20-6037

O-RING........................................ 1

5

54-4906

FLUID TUBE ASSEMBLY.............. 1

6

54-4986

GUN HEAD ................................ 1

7

54-4923*

FRONT HEAD GASKET .............. 1

8

54-4963*

NEEDLE PACKING CARTRIDGE.... 1

(4,000 PSI Maximum)

9

GUN BODY 

(Not Sold Separately)

10

54-4925

FLUID INLET NUT........................ 1

11

54-4977

FAN CONTROL ASSEMBLY ........ 1

12

54-4939

TRIGGER SCREW ........................ 1

ITEM

PART

NO.

NO.

DESCRIPTION

QTY.

13

54-4938

TRIGGER STUD .......................... 1

14

FLAT PLUG 

(Not Sold Separately)

15

54-4947

FLUID TUBE BRACKET SPACER .. 1

16

54-4943

FLUID TUBE BRACKET................ 1

17

54-4975

PUSH IN TUBE FITTING .............. 1

1/8" NPT(m) x 3/8" O.D.

18

20-6718

BUTTON HEAD CAP SCREW ...... 1

19

54-4944

FLUID INLET FITTING.................. 1

20

54-4937

TRIGGER...................................... 1

21

54-4909*

AIR VALVE ASSEMBLY................ 1

22

71-28

D.M. NIPPLE................................ 1

1/8" NPT(m) x 1/4" NPS(m)

23

54-4725

FILTER ASSEMBLY

(100 Mesh)

........ 1

Also available: 20-6750-K10 (Kit of 10 O-rings for AA-4 Air Cap). 

* Available as part of Repair Kit 54-4993.

Also available: 20-6037-K10 (Kit of 10 O-rings). 

Alternate Push-In Tube Fitting (17) is included in gun package. 

Alternate Fluid Inlet Fitting (19)—order separately. 

PARTS LIST

When ordering, please specify Part No.

(Not all part numbers are available for purchasing.)

Summary of Contents for AA4000

Page 1: ...lt of the preatom izing the final shaping air supplied by the air cap produces an exceptionally fine and even spray pattern The result of this spray pattern is an even finish that lends itself to products that need an exceptionally fine finish with reduced overspray and VOC emissions SPECIFICATIONS Maximum Fluid Pressure 4000 psi 275 bar Maximum Air Pressure 100 psi 6 8 bar Gun Body Forged Aluminu...

Page 2: ...lations Improper grounding poor air ventilation open flames or sparks can cause a hazardous condition and result in fire or explosion and cause serious injury FIRE AND EXPLOSION HAZARD Ground the equipment and object being sprayed Provide fresh air ventilation to avoid the build up of flammable fumes from the material being sprayed or from solvent Extinguish all open flames or pilot lights in spra...

Page 3: ...uid pressure increases more air is needed to eliminate the tails Consistency in spraying can be increased across spray gun operators and similar spraying jobs by developing pressure standardization charts Repeat step 6 until the required material coverage and spraying speed are achieved If the maximum fluid pressure is reached before the required material coverage and spraying speed are achieved y...

Page 4: ...en or replace fluid seat 4 Slow fluid shut off Fluid buildup on cartridge assembly Clean or replace cartridge assembly 8 No fluid output when triggered Tip orifice plugged Turn off fluid supply Relieve pressure into a closed grounded container Engage trigger safety Remove tip guard assembly 1 and air cap 2 and the carbide tip 3 Clean or replace carbide tip assembly 3 Collet on needle has slipped T...

Page 5: ...lubricated after each cleaning The points that need lubrication dur ing the maintenance of air assisted airless spray guns include 1 the fluid needle packing 2 trigger pivot point Gun lube is used to lubricate the fluid needle pack ing and trigger pivot point CLEANING The following steps summarize the procedure for clean ing air assisted airless spray guns 1 Turn off the atomizing air supply to th...

Page 6: ... These materials are clearly labeled as approved for cleaning and wash off operations If the operator has any question on selecting appropriate cleaning solvents the operator should consult a supervisor or plant environmental staff ITEM PART NO NO DESCRIPTION QTY 1 54 4983 TIP GUARD ASSEMBLY 1 2 54 4978 AA4 AIR CAP Standard 1 54 4980 AA2 AIR CAP Optional 1 3 113 0XXXX CARBIDE TIP ASSEMBLY 1 See Ti...

Page 7: ...2 1 7 20 21 22 23 18 16 15 14 6 5 4A 17 13 12 11 10 9 8 7 AA4000 AIR ASSISTED AIRLESS SPRAY GUN Alternate 19 See note below NOTE Do not overtighten for ease of filter replacement Adequate torque required is 5 6 ft lbs ...

Page 8: ...ale Heights IL 60139 Toll Free Telephone 1 888 992 4657 U S A and Canada only Toll Free Fax 1 888 246 5732 Binks Worldwide Sales and Service Listing www binks com WARRANTY This product is covered by Binks 1 Year Limited Warranty 77 2776R 9 Revisions P2 Replaced warnings SPRAY TIP SELECTION CHARTS FAN PART NO SIZE WIDTH 113 00702 007 1 2 113 00704 007 2 4 113 00706 007 4 6 113 00708 007 6 8 113 009...

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