18
819.4496
Service
Ball Check Valve Repair
Tools Required
•
Torque wrench
•
10 mm socket wrench
•
O-ring pick
Disassembly
NOTE: A Fluid Section Repair Kit is available. Refer to page
25 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.
1.
Relieve the pressure. Disconnect all hoses.
2.
Remove the pump from its mounting.
3.
Using a 10 mm socket wrench, remove the eight bolts
(106) and four washers (113), holding the outlet manifold
(103) to the fluid covers (101). See F
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 bolts (112),
washers (114), and 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
F
. 11. 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).
Torque to 17–18 N•m. See Diaphragm Kits, page 29.
Arrow (A) must point toward outlet manifold (103).
Not used on some models.
F
IG
. 11
_______________________
Warning
To reduce the risk of serious injury whenever you are
instructed to relieve pressure, always follow the Pressure
Relief Procedure on page 13.
1
2
3
106
103
101
A
201*
301*
112
102
201*
301*
2
1
1
202*
202*
3
3
04619C
113
114
