Pump Reassembly - Graco ULTRA PLUS+ 1500 Instruction Manual

Displacement Pump
Pump
Reassembly
1. Clean the piston valve threads. One at a time,
stack the backup washer (203*), seal
(215')
(with
lips facing down), and female gland (214') on the
piston. Alternately stack the polyethylene
(212*)
the piston. Then install the male gland (210'). See
and leather (206*) packings (lips facing up) on
Fig. 23.
2.
Place the flats of the piston valve in a vise. lighten
Fig. 25
02558
the packing retaining nut against the piston valve
to
4
in-lb (0.35 Nm). See Fig. 24.
tainer nut. Maintain this alignment through Steps 4
Note the alignment of the piston to the packing r e
and
5.
3 .
Apply one drop of Locktiie to the threads. Place
the ball
(225')
on the piston valve. See Fig. 25.
4.
While maintaining the alignment, thread the
the piston valve nut contacts the rod.
See Fig. 26.
piston valve assembly into the piston rod just until
5 .
Place the flats of the rod in a vise. Carefully
Fig. 26
02569
tighten the piston valve nut
(21 1)
against the
piston rod to 19 ft-lb (27 Nm). Use two wrenches
to maintain the alignment. See Fig. 27.
6.
Place the male gland
(208*)
in the cylinder. Alter-
nately stack the polyethylene (213*) and leather
the female gland (209' ) in
the
top of the cylinder.
packings (207*) (lips facing down). Then place
Seat the packings. See Fig. 28.
*210
*212
*214
02570
Flg. 23
Torque to 4
in-lb
/
(0.35
N m )
(
x