14
308368
Service
Ball Check Valve Repair
Tools Required
D
Torque wrench
D
10 mm socket wrench
D
O-ring pick
Disassembly
NOTE:
A Fluid Section Repair Kit is available. Refer to
page 21 to order the correct kit for your pump. Parts
included in the kit are marked with an asterisk, for
example (201*). Use all the parts in the kit for the best
results.
NOTE:
To ensure proper seating of the balls (301),
always replace the seats (201) when replacing the
balls.
NOTE:
(Extension Version) To ensure proper sealing
of extension (115), always replace o–rings (116) when
replacing the balls.
1.
Follow the
Pressure Relief Procedure Warning
on page 9. Disconnect all hoses.
2.
Remove the pump from its mounting.
3.
Using a 10 mm socket wrench, remove the four
bolts (106) holding the outlet manifold (103) to the
fluid covers (101). See Fig. 10.
4.
Remove the seats (201), balls (301), and o-rings
(202) from the manifold.
NOTE:
Some models do not use o-rings (202).
5.
Turn the pump over and remove the inlet manifold
(102). Remove the seats (201), balls (301), and
o-rings (202) 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 Fig. 10. Be sure the ball checks are
assembled
exactly
as shown. The arrows (A) on
the fluid covers (101)
must
point toward the outlet
manifold (103).
Apply medium-strength (blue) Loctite
R
or equivalent
to the threads. Torque to 120 to 150 in-lb
(14 to 17 N.m).
TI0352B
Fig. 10
1
2
Arrow (A) must point toward outlet manifold (103).
106
103
101
A
*201
*301
106
102
201*
301*
2
1
1
*202
202*
3
Not used on some models.
3
3
4
Beveled seating surface must face ball (301).
4
4
113
5
5
Used on stainless steel model only.
Z
117
103
*301
*201
*202
Z
115
Z
116
101
Extension
Models Only
TI2233A
