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Repair
6 312068M
Pump Base Disassembly
Disassemble and clean pump base annually. For
pumpline P7758-255773, disassemble and clean the
pump base on every six months.
1. Relieve pressure, page 3.
2. Turn OFF the main disconnect and lock out power at
the source.
3. Remove pump cap (19) from pump base (23), and
remove o-ring (6):
a. Remove outlet ball (4) and o-ring (9).
b. Remove inlet ball cage (14), spring (22) and
inlet ball (10).
c. Remove inlet ball seat (11) and o-ring (9) from
bottom of cavity.
d. Thoroughly clean all metal parts in a compatible
solvent and inspect for wear or damage. Inspect
each ball and seat for nicks or scratches;
replace as required.
e. Replace all o-rings. Kit 261859 contains all
o-rings for pump base rebuild.
Pump Base Reassembly
1. Install inlet valve in pump base by inserting o-ring
(9), inlet ball seat (11), ball (10), spring (22), and
inlet ball cage (14) into pump base cavity. See Parts
on page 15.
2. Install outlet valve in pump base:
a. Install o-ring (9) and valve ball (4) into the cavity.
b. Install the o-ring (6) on pump cap (19). Install
and tighten cap to pump base. Torque to 75 ft-lb
(101.3 N•m).
19
6
4
9
14
22
10
11
9
23
TI9780b