Service - Graco Series C Instructions Manual

Air Valve
NOTE: Air Valve Repair Kit 241657 is available. Order repair kit separately. Parts included in the kit are marked with
a dagger () in Fig. 5 and in the Parts Drawings and Lists. A tube of general purpose grease 111920 is supplied in the
kit. Service the air valve as follows. See Fig. 5.
1. Relieve the pressure. See
Pressure Relief Procedure on
page 10.
2. Remove the cover (10) and the o-ring (4).
3. Remove the carriage plungers (7), carriages (8),
carriage pins (9), and valve plate (14) from the
center housing (11).
4. Clean all the parts, and inspect them for wear or
damage.
NOTE: If you are installing the new Air Valve Repair Kit
241657, use all the parts in the kit.
5. Grease the lapped surface of the valve plate (14),
and install the valve plate with the lapped surface
facing up.
6. Grease the bores of the center housing (11), install
the u-cup packings (2) on the carriage plungers (7),
and slide the carriage plungers into the carriage
plunger bores. See the following important
installation notes:
NOTE: Center housing (11) is shown
separated from the air covers, but it is
not necessary to remove the air covers
for this service. Leave the center
housing and air covers assembled for
this service.
Included in Air Valve Repair Kit 241657
Torque to 80 to 100 in-lb (9.0 to 13.6 N-m).
1
Apply grease.
2
Apply grease to lapped face.
3
Apply grease to bores of center housing (11) before installing.
4
Seal lips face clip end (the smaller end) of carriage plunger (7).
5
Install with the clip ends (the smaller ends) facing toward center of center
6
housing (11).
Fig. 5

Service

NOTES:
•
•
7. Grease the carriage pins (9), and slide the carriage
8. Install the carriages (8). Make sure the carriages
9. Grease the o-ring (4), and seat it in the groove
10. Screw the cover (10) into the center housing, and
8
5 4
2
7
4 6
GracoHusky.ir
GracoHusky.ir
When you install each u-cup packing (2) on each
carriage plunger (7), make sure the lips of the u-cup
packing face toward the clip end (the smaller end) of
the carriage plunger.
When you slide the carriage plungers (7) into the
bores, slide them in with the clip ends (the smaller
ends) facing toward the center of the center housing
(11).
pins into the carriage pin bores.
engage the clip ends of the carriage plungers (7)
and carriage pins (9).
around the cover opening of the center housing
(11).
torque the cover to 80 to 100 in-lb (9.0 to 13.6 N-m).
2
5 4
3
14
7
4 6
11
1
10
4
2
9
2
8
9
2
9069A
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