Intake Valve
(See Fig 5)
1. Unscrew the intake valve housing (119) and remove
the ball stop pin (1 IO), retainer
o-ring (1 1
ball guide (116) and ball
2 . Reassemble the intake valve with a new o-ring and
ball.
Piston, Sleeve or Displacement Rod (See
Fig 5)
1.
2 .
3 .
4 .
5 .
6 .
7 .
8 .
9 .
Screw the intake valve housing (119)
the pump
housing (120).
Loosen the packing nut/wet-cup (121).
Push the displacement rod (115) down until the flats
of the piston clear the bottom of the housing.
Loosen the piston stud (117) and pull it and the rod
out the bottom of the housing.
Screw the piston out of the rod and remove the ball,
glands, and packing retainer and packings.
Inspect the outside of the displacement rod and the
smooth inner surface of the sleeve (106) for scoring
or other surface defects. A worn or damaged rod or
sleeve will cause packings to wear faster and result
in pump leakage.
To remove the sleeve, pull it out the bottom of the
pump housing. If you cannot get it out, contact your
nearest
Factory Branch or Service Depart-
ment. Install a new sleeve so the beveled edge is at
the bottom of the pump housing.
Lubricate the inside of the sleeve
the rod (115).
Lubricate the new packings and glands and the
outside of the piston stud (117). One at a time, stack
the packings and glands on the piston stud
in
the order shown in the
PARTS DRAWING
on page 9.
Be sure the lips of the v-packings face up.
IO. Place a new ball
on the seat. Apply thread
sealant to the threads of the piston stud (117). Screw
the assembly into the displacement rod (115). Torque
the piston to 65-75 ft-lb (88-102 N.m).
Throat Packings (See
Fig 5)
1.
2 .
3 .
4 .
5 .
6.
7 .
8 .
Screw the intake valve
out of the pump housing.
Remove the piston and displacement rod assembly.
Unscrew and remove the packing nut/wet-cup(l21).
Remove the packings and glands from the cavity of
the pump housing.
Lubricate the new packings and glands. One at a
time, stack the packings and glands in the top of the
pump housing (120) in the order shown in the
PARTS
DRAWING
on page 9. Be sure the lips of the v-pack-
ings face down.
Install and tighten the packing nut just enough to stop
leakage, but no tighter.
Reconnect the displacement pump to the
reciprocator.
Fill the packing nut/wet-cup (121)
full with
Throat Seal Liquid or a compatible solvent.
Reconnect the ground wire if it was disconnected for
servicing the pump.
307-623
Leather
LIPS
. . . . . . . .
V - P A C K I N G S
IN THROAT
--
A
FACE DOWN
N O T E :
Throat Packings
are stacked:
UHMWPE, leather,
UHMWPE, leather,
leather, UHMWPE
Leather
Fig
5
Содержание Viscount I 3000
Страница 1: ...Parts...
