Turbine Alternator Removal And Replacement; Barrel Installation - Graco 236685 Instructions And Parts List

Turbine Alternator Removal and
Replacement
NOTE: Replace the turbine bearings after 2000 hours
of operation. See your authorized Graco representa-
tive.
1. Prepare the gun for service as instructed on
page 28.
2. Remove the power supply from the gun body as
instructed on page 35.
3. Squeeze the two ends of the retaining ring (30)
together and carefully pull the alternator (25) away
from the power supply (27) until the wire connector
(V) disengages. See Fig. 31, page 35.
4. Use an ohmmeter to test the turbine alternator coil.
Measure the resistance between the two outer
terminals of the 3-wire connector (V). Resistance
should be 3 to 5 ohms. If the reading varies from
this value, replace the alternator.
5. Connect the 3-wire connector to the 3 prongs in
the power supply. Push the alternator (25) onto the
power supply (27) until the retaining ring (30)
engages with the alternator.
6. Install the power supply in the gun body as
instructed on page 35.
7. Assemble the gun as instructed at right.
36 308442
Service

Barrel Installation

1. Be sure the gaskets (20, 27a) and spring (11) are
in place. See Fig. 32. Replace the parts if they are
damaged.
2. Place the barrel (26) over the power supply (27)
and onto the gun body (29). Make sure the fluid
needle spring (11) is seated properly.
3. Using the ball end wrench (77–not shown), tighten
the three screws (24) oppositely and evenly to 18
in-lbs (2 NSm) maximum (about a half turn past
snug); do not over-tighten.
To avoid damaging the gun, do not over-tighten the
screws (24).
4. Install the fluid tube back into the fluid fitting (4)
and tighten the nut (43).
5. Install and adjust the actuator arm (19) and jam
nut (46) as instructed on page 33.
NOTE: Make sure the entire fluid tube (33) is clear
of the actuator arm to avoid having the tube rub
against it during operation.
6. Test the gun resistance as instructed on page 26.
7. Install the gun shroud and air cap assembly.
8. Install the gun onto the manifold and bracket as
instructed on page 37.
CAUTION