DeVilbiss MBC-510, Service Manual

EN

SB-2-301-V  (7/2014)

1 / 8

SERVICE MANUAL

MBC-510 SPRAY GUN

Repair Kit KK-4058-1

IMPORTANT:  Before using this equipment, 

read all safety precautions and instructions.  

Keep for future use.

Note

This gun may be used with chlori-

nated solvents.  Aluminum is not 

used in the fluid passage areas.

DESCRIPTION

The MBC-510 standard spray gun has a 

removable sprayhead; nickel plated brass 

fluid passages; a stainless steel fluid tip and 

needle to reduce wear; forged aluminum 

gun body; large air and fluid passages for 

high capacity use and a cartridge type air 

valve to minimize repairs.

Nozzle combinations are listed in Chart 1.  

Refer to the Spray Gun Catalog, I-2008,  for 

information regarding air cap and fluid tip 

characteristics. 

OPERATION

Strain material thru 60 or 90 mesh screen.

Adjust fluid pressure to deliver the desired 

paint volume.  Adjust air pressure and flow 

to provide a uniform dispersion of atomized 

paint throughout the pattern.  Keep air pres-

sure as low as possible to minimize bounce 

- back and overspray.  Excessive fluid flow 

will result in heavy center spray patterns.  

Inadequate flows may cause the pattern 

to split.  See Spray Gun Guide, SB-2-001, 

which is available upon request, for details 

concerning set up of spray guns.  

PREVENTIVE MAINTENANCE

To clean air cap and fluid tip, brush exterior 

with a stiff bristle brush.  If necessary to clean 

cap holes, use a broom straw or toothpick.  

Never use a wire or hard instrument.  This 

may scratch or burr holes causing a distorted 

spray pattern.

To clean fluid passages, remove excess 

material at source, then flush with a suit-

able solvent using a device such as the 

SolventSaver™ (see Accessories).  Wipe 

gun exterior with a solvent dampened cloth.  

Never completely immerse in solvent as this 

is detrimental to the lubricants and packings.

Note

When replacing the fluid tip or fluid 

needle, replace both at the same time.  

Using worn parts can cause fluid 

leakage.  For thinner, less viscous 

materials a lapped tip and needle set 

is recommended.   See Chart 3.  Also, 

replace the needle packing at this 

time.  Lightly lubricate the threads 

of the fluid tip before reassembling.  

Torque to 20-25 ft. lbs.  Do not over 

tighten the fluid tip.

To prevent damage to the fluid tip (5) 

or fluid needle (11), be sure to either 

1) pull the trigger and hold while 

tightening or loosening the fluid tip 

or 2) remove fluid needle adjusting 

screw (32) to relieve spring pressure 

against needle collar.

SPRAY GUN LUBRICATION

Daily, apply two drops of •SSL-10 spray gun 

lube (see Accessories) at trigger bearing stud 

(34) and the stem of the air valve (15) where 

it enters the air valve assembly.  The shank 

of the fluid needle (11) where it enters the 

packing nut (10) should also be oiled.  The 

fluid needle packing (9) should be kept soft 

and pliable by periodic lubrication.  Make 

sure the sprayhead (8) and retaining ring (1 

or 2) threads are clean and free of foreign 

material.  Before assembling retaining ring 

to sprayhead, clean the threads thoroughly, 

then add two drops of SSL-10 spray gun 

lube to threads.  The fluid needle spring (31) 

and air valve spring (16) should be coated 

with a very light grease, making sure that 

any excess grease will not clog the air pas-

sages.  For best results, lubricate the points 

indicated, daily.

• Material Safety Data Sheet available from 

DeVilbiss upon request. 

A.  Trigger Points

B. Packing

C.  Adjusting Valves

D. Threads

AC D E  EX  FF  FX 

24    P 

P 

   P 

 30 

  P  S 

P  P

  58 

       P/S  S 

P 

P   

 62HD 

P   

 64HD 

  P

69HD    P 

80       S    

 704 

  P   

P     

  765 

P   

P 

P  

 777 

  P   

P

 797 

  P   

P     

9000       S

CHART 1

Fluid Tip and Needle Sizes Order 

From Chart 3

Air Cap Sizes 

Order From 

Chart 2

  P -  Pressure Feed Combination

  S -  Suction Feed Combination

Nozzle Combinations

24 

 AV-40-24

 30 

MB-4039-30 

 58 

AV-439-58

 62HD 

MB-4039-62HD

   64HD 

MB-4039-64HD

 69HD 

MB-4039-69HD

 80 

MB-4039-80

 704 

AV-1239-704

 765 

AV-1239-765

 777 

31767-777

 797 

AV-1239-797

 9000 

AV-440-9000

Air Caps

CHART 2

A

B

A

C

D

  No. on 

Ref. Nos. (1) 

Ref. No. (3)

  Cap 

Air Cap 

Air Cap

  Order 

with Ring 

Less Ring

CA PROP

65

PROP 65 WARNING
WARNING: This product 
contains chemicals known 
to the State of California to 
cause cancer and birth 
defects or other 
reproductive harm.