Gun Barrel Removal; Gun Barrel Installation - Graco WB3000 Instructions - Parts Manual

Repair

Gun Barrel Removal

1. See Prepare the Gun for Service, page
2. Remove the air inlet fitting (21) and take the
bracket (B) off the gun handle (16).
3. Loosen the two screws (6).
To avoid damaging the power supply (11),
pull the gun barrel straight away from the gun
handle. If necessary, gently move the gun
barrel from side to side to free it from the gun
handle.
4. Hold the gun handle (16) with one hand and pull
the barrel (1) straight off the handle.
Figure 27 Gun Barrel Removal
50
47.
NOTICE

Gun Barrel Installation

1. Be sure the gasket (5*) and grounding spring
(37a) are in place. Make sure the gasket air
holes are aligned properly. Replace the gasket if
damaged.
2. Make sure the spring (11a) is in place on the
tip of the power supply (11). Liberally apply
dielectric grease (57) to the tip of the power
supply. Place the gun barrel (1) over the power
supply and onto the gun handle (16).
3. Tighten the two screws (6) oppositely and evenly
(about a half turn past snug). Do not over-tighten
the screws (6).
4. Position the bracket (B) on the gun handle (16)
and secure with the air inlet fitting (21).
5. See Test Gun Resistance, page
Figure 28 Gun Barrel Installation
36.
3A2497C