5.
Inspect the valve plate (110) in place. If
damaged, use a Torx (T20) screwdriver or 7 mm
(9/32) in.) socket wrench to remove the three
screws (107). Remove the valve plate (110).
6.
Inspect the bearings (113, 115) in place. See
. The bearings are tapered and,
if damaged, must be removed from the outside.
This requires disassembly of the fluid section.
See
Center Section Repair, page 19
7.
Clean all parts and inspect for wear or damage.
Replace as needed.
Reassemble
Reassemble
Reassemble Air
Air
Air Valve
Valve
Valve
NOTE:
NOTE:
NOTE: If repairs involve removing
fluid covers, perform the steps in
Reassemble the Overmolded Diaphragms, page 17
prior to reassembly of the air valve. The air valve
configuration will be modified to aid fluid cover
installation.
1.
If the center section was disassembled to
replace the bearings (113, 115), complete
the
Center Section Repair, page 19
continuing with the air valve reassembly.
2.
Install the valve plate (110) in the cavity, seal
down. Install the three screws (107), using a
Torx (T20) screwdriver or 7 mm (9/32 in.) socket
wrench. Tighten until the screws bottom out on
the housing.
3.
Install an o-ring (108) on each pilot pin (112).
Grease the pins and o-rings. Insert the pins into
the bearings,
narrow
narrow
narrow
end first.
4.
Install u-cups (106) on each actuator piston
(114), so the lips of the packings face the
narrow
narrow
narrow
end of the pistons.
5.
Lubricate the u-cups (106) and actuator pistons
(114). Insert the actuator pistons in the bearings
(115),
wide
wide
wide
end first. Leave the narrow end of
the pistons exposed.
6.
Grease the lower face of the pilot block (116) and
install so its tabs snap into the grooves on the
ends of the pilot pins (112).
7.
Grease the lower face of the valve carriage (105).
8.
Install the valve carriage (105) so its tabs slip into
the grooves on the narrow end of the actuator
pistons (114).
10
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