Service
18
3A4238B
Ball Check Valve Repair
Tools Required
•
O-ring pick
Disassembly
NOTE:
•
A Fluid Section Repair Kit is available. Refer to the
Repair Kit Matrix parts section for the appropriate
pump size so that the correct kit for your pump is
ordered. Parts included in the kit are marked with an
asterisk, for example (202*). Use all the parts in the
kit for the best results.
•
To ensure proper seating of the balls (301), always
inspect the seats (201) when replacing the balls.
Replace seats as necessary if seating surface
shows evidence of wear. Also, replace the o-rings
(202) as necessary. PTFE o-rings should be
replaced every time manifolds are removed.
1.
Relieve the pressure. Disconnect all hoses.
2.
Remove the pump from its mounting.
3.
Remove the clamps (106) holding the outlet mani-
fold (103) to the fluid covers (101). See F
IG
. 9.
4.
Remove the o-rings (202), seats (201), and balls
(301) from the manifold (103).
5.
Turn the pump over and remove the inlet manifold
(102). Remove the o-rings (202), seats (201), and
balls (301) from the fluid covers (101).
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
IG
. 9. Be sure the ball checks and manifolds are
assembled
exactly
as shown. The arrows (A) on
the fluid covers (101)
must
point toward the outlet
manifold (103).
F
IG
. 9
TI8932a
2
1
Arrow (A) must point toward outlet manifold (103)
Radiused seating surface must face the ball (301).
Large chamfer on O.D. must face o-ring.
103
301*
201
202*
101
A
301*
201
202*
102
1
2
2
113
113
