VERDER VA50PAPPSPSPFEOO, Repair Parts

Page: 14 / 36

Repair
Check Valve Repair
NOTE: Kits are available for new check valve balls
and seats in a range of materials. See page 27
to order kits in the material(s) desired. O-ring and
fastener kits also are available.
NOTE: To ensure proper seating of the check balls,
always replace the seats when replacing the balls.
Also, replace the o-rings every time the manifold is
removed.
Disassemble the Check Valve
1. Follow the Pressure Relief Procedure, page 11 .
Disconnect all hoses.
NOTE: The pump is heavy. Always use two
people or a lift to move it.
2. Remove the pump from its mounting.
3. NOTE: Use hand tools until thread-locking
adhesive patch releases. Use a 17 mm (11/16 in)
socket wrench to remove the manifold fasteners
(5), then remove the manifold (3).
4. Remove the o-rings (9), seats (7), and balls (8).
5. Turn the pump over and remove the inlet
manifold (4).
6. Remove the o-rings (9), seats (7), and balls (8).
Reassemble the Check Valve
1. Clean all parts and inspect for wear or damage.
Replace parts as needed.
2. Reassemble in the reverse order, following all
notes in the illustration. Put the inlet manifold on
first. Be sure the ball checks (7-9) and manifolds
(3, 4) are assembled exactly as shown. The ball
must seat on the chamfered side of the seat.
The arrows (A) on the fluid covers (2) must point
toward the outlet manifold (3).
Figure 1 Check valve assembly
Torque to 21 to 25 N·m (190 to 200
in-lb). Follow torque sequence. See
Torque Instructions, page 19 .
Arrow (A) must point toward outlet
manifold
The chamfered side of the seat must face
toward the ball.
14 859.0302