VERDER AIR VA 25 Instructions-Parts List Manual page 16

1
Insert narrow end first.
2
Grease.
3
Install with lips facing
narrow end of piston (30).
4
Insert wide end first.
Fig. 9
Reassembly
1. If you replaced the bearings (28, 31), reinstall as
explained on page 21. Reassemble the fluid section.
2. Install the valve plate seal (15) into the groove at the
bottom of the valve cavity. The rounded side of the
seal must face down into the groove. See Fig. 10.
3. Install the valve plate (14) in the cavity. The plate is
reversible, so either side can face up. Install the three
screws (8), using a Torx (T20) screwdriver or 7 mm
(9/32 in.) socket wrench. Torque to 50–60 in-lb (5.6–
6.8 N•m). See Fig. 10.
4. Install an o-ring (27) on each push pin (26). Grease
the pins and o-rings. Insert the pins into the bearings
(28), narrow end first. See Fig. 9.
5. Install a u-cup packing (22) on each actuator piston
(30), so the lips of the packings face the narrow end
of the pistons. See Fig. 9.
6. Lubricate the u-cup packings (22) and actuator
pistons (30). Insert the actuator pistons in the
bearings (31), wide end first. Leave the narrow end of
the pistons exposed. See Fig. 9.
7. Install the pilot block (9) so its tabs snap into the
16 819.0254
Service
Fig. 10
grooves on the ends of the push pins (26). See Fig. 8.
8. Grease the o-ring (12) and install it in the valve block
(13). Push the block onto the valve carriage (11).
Grease the lower face of the valve block. See Fig. 8.
9. Align the valve carriage (11) with the actuator pistons
(30) and install so its tabs slip into the grooves on the
narrow end of the pistons. See Fig. 8.
10. Align the valve gasket (10) and cover (7) with the six
holes in the center housing (5). Secure with six
screws (8), using a Torx (T20) screwdriver or 7 mm
(9/32 in.) socket wrench. Torque to 50–60 in-lb (5.6–
6.8 N•m). See Fig. 7.