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Air Valve
NOTE: Air Valve Repair Kit 241657 is available. 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
6
of center housing (11).
Fig. 5
Service
NOTE:
•
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).
7. Grease the carriage pins (9), and slide the carriage
pins into the carriage pin bores.
8. Install the carriages (8). Make sure the carriages
engage the clip ends of the carriage plungers (7) and
carriage pins (9).
9. Grease the o-ring (4), and seat it in the groove around
the cover opening of the center housing (11).
10. Screw the cover (10) into the center housing, and
torque the cover to 80 to 100 in-lb (9.0 to 13.6 N-m).
†8
†2
5
4
†7
4
6
1
10
2†
5
4
3
14†
7†
4
6
11
8†
9†
2
4
2
9†
2
9069A
308797
13
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