Graco 24X636, Operation, Parts

Page: 15 / 30

Maintenance
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3. Examine the sides of the mixing chamber for
scratches and/or material buildup. Carefully, without
scratching the seal surfaces, remove any accumu-
lated material.
4. Place generous amounts of high quality, lubricant
grease (part no. 117773) in each side of the gun
front housing and on the side block seals.
5. Use the correct size drill bit to clean the mixing
chamber exit passage.
NOTE:
Refer to the
Cleaning Drill Chart
on page
26
in
this manual to select the correct size drill bits.
6. Use the correct size drill bit to clean the inlet side
holes of the mixing chamber, taking care not to
scratch the mixing chamber’s polished surfaces.
7. Reassemble the side blocks (K) and tighten the
screws. Grease should appear at the tip of the mix-
ing chamber.
NOTE:
Do not open the supply air switch on the gun
because this purges grease from the gun. Allow the
grease to remain in the gun overnight.
Daily Shutdown
Once you have used the gun with a system and have
become comfortable with techniques on how all of the
variables are affecting your operation and maintenance,
maintenance requirements can be addressed specific to
your operation.
1. Turn off the material valves (E,F). Activate and
deactivate the gun 5-6 times to purge residual pres-
sure.
2. Engage the piston lock (G).
3. Drill out the chamber insert snout with the correct
size drill bit for the insert. See the
Cleaning Drill
Chart
on page
26
.
NOTICE
Solvent can be used to wash the accumulated mate-
rial off of the chamber and side blocks. Keep the gun
chamber tilted toward the ground so that the solvent
does not run back into the gun. Some solvents can
cause swelling and deterioration of the o-rings on the
chamber shaft.
Clean with
Drill Bit
Grease