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© Titan Tool Inc.  All rights reserved. 

3

Maintenance

Follow all safety precautions as described in the Safety 

Precautions section of this manual before proceeding.

  NOTE:  Refer to the Parts List section in this manual for part 

identification.

Replacing/Servicing the Seal Assembly

If your spray gun leaks or spits at the tip when you release the trigger, the 

needle or seat is worn, damaged, or dirty and must be replaced or cleaned.

Never attempt to perform maintenance on the spray gun 

without first performing the “Pressure Relief Procedure.”

 

1.  Disconnect the fluid hose from the gun.

 

2.  Remove the tip and tip guard.

 

3.  With the trigger depressed, remove the diffuser from the front of the 

gun.

 

4.  Remove the lock nut, rear housing, and retractor pins from the rear of 

the gun head.

 

5.  Remove the seal assembly from the front of the gun head by pushing 

or gently tapping at the back of the seal assembly.

 

6.  Soak the removed parts in the appropriate solvent and wipe clean.

 

7.  Inspect the parts for wear or damage and use new parts during 

reassembly of the gun, when necessary.

  NOTE:  Lubricate all packings and moving parts before reassembly 

with a lithium-based grease.

 

8.  Install the seal assembly into the front of the gun head.

 

9.  Install the retractor pins into the rear of the gun head.  Slide the rear 

housing onto the retractor pins and secure in position with the lock 

nut.

  10.  WIth the trigger depressed, install the diffuser into the front of the 

gun head and tighten securely with a wrench.

  11.  Perform the “Adjusting the Seal Assembly” procedure described 

below.

Adjusting the Seal Assembly

Proper adjustment of the seal assembly is essential to ensure 

positive shut-off when the trigger is released.

 

1.  Tighten the lock nut until the rear housing is flush against the gun 

head.

 

2.  Unscrew the lock nut 3/4 of a turn.

  NOTE:  To check the adjustment of the seal assembly:
 

1.  Move the gun trigger lock to the locked position.

 

2.  Pull the trigger.

 

  With the trigger lock engaged, there should be 1/32” of 

movement between the lock nut and the rear housing while 

pulling the trigger.

Replacing/Removing the Filter

 

1.  Move the gun trigger lock to the unlocked position.

 

2.  Loosen and remove the handle assembly from the gun head.

 

3.  Turning clockwise, unscrew the filter from the gun head. 

  NOTE:  Refer to the Parts List section in this manual for part 

identification.

 

4.  Turning counterclockwise, screw the new or cleaned filter into the 

gun head.

 

5.  Make sure the handle seal is in position and thread the handle 

assembly into the gun head until secure.

 

6.  Move the gun trigger lock to the locked position.

Gun Filter chart

Part 

Number

Application

Filter Type

color of 

Filter Body

500-200-15 Synthetic resin, enamels, clean 

varnishes, stains, azures

Extrafine

red

500-200-10 Base coat enamels, primer 

enamels, fillers, marking paints, 

textured enamels

Fine

yellow

500-200-06 Emulsions, latex paints, acrylic 

paints

Medium

white

500-200-03 Filler paints, large area surfaces Coarse

green

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