12
859.0089
Check Valve Repair
NOTE: Kits are available for new check valve balls and
seats in a range of materials. See page 26 to order kits
in the material(s) desired. An o-ring kit and fastener kits
also are available.
NOTE: To ensure proper seating of the check balls,
always replace the seats when replacing the balls. Also,
on models with manifold o-rings, replace the o-rings.
Disassembly
1.
Follow the Pressure Relief Procedure on page 9.
Disconnect all hoses.
2.
Remove the pump from its mounting.
3.
Use a 10 mm socket wrench to remove the outlet
manifold fasteners (6). See F
NOTE: For plastic pumps (
VA25(HE)CC,
VA25(HE)PP,
and
VA25(HE)KP
), use hand tools only
until thread-locking adhesive patch releases.
4.
Remove the o-rings (12, not used on some models),
seats (10), and balls (11).
5.
Turn the pump over and remove the inlet manifold.
Remove the o-rings (12, not used on some models),
seats (10), and balls (11).
Reassembly
1.
Clean all parts and inspect for wear or damage.
Replace parts as needed.
2.
Reassemble in the reverse order, following all notes
in F
. 6. Be sure the ball checks (10-12) and mani-
folds (4, 5) are assembled exactly as shown. The
arrows (A) on the fluid covers must point toward the
outlet manifold (4).
F
IG
. 6. Ball check valve assembly
Torque to 90 in-lb (10.2 N•m). See Torque Instructions,
page 16.
1
Not used on some models.
3
ti14098a
6
4
11
12
10
12
3
6
5
Arrow (A) must point toward outlet manifold.
2
1
1
2
A
10
12
12
3
3
3
3
11
Aluminum pump
shown
7
Summary of Contents for VERDERAIR VA 25
Page 33: ...859 0089 33 Notes ...
