Barrel Removal; Barrel Installation - Graco PRO 309292S Instructions Manual

Repair

Barrel Removal

1. Prepare the gun for service, page 25.
2. Carefully loosen the nut (32 or 50d) from the bracket
fluid fitting (13). Pull the tube (14 or 50a) out of the
fitting. Make sure both ferrules and the nut stay with
the tube.
3. Loosen the three screws (11).
CAUTION
To avoid damaging the power supply (18), 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 (17) with one hand and pull the
barrel (16) straight off the handle. See F
14
32
13
ti1503a
17
Fig. 15. Barrel Removal
30
. 15..
IG
11
16
ti1504a

Barrel Installation

1. Be sure the gasket (10*) and grounding spring (55)
are in place. Make sure the air holes are aligned
properly. Replace if damaged. See F
2. Place the barrel (16) over the power supply (18) and
onto the gun handle (17).
3. Tighten the three screws (11) oppositely and evenly
(about a half turn past snug).
CAUTION
Do not over-tighten the screws (11).
4. Assemble the fluid tube (14) into the bracket fitting
(13). Ensure that the ferrules are in place. Tighten
the nut (32).
5. Test gun resistance, page 18.
11
16
Fig. 16. Barrel Installation
. 16..
IG
*10
18
55
ti1506a
309292S