Repair
10
334127D
Replace the Throat Packings
The throat packings are available as pre-assembled
kits.
1. Relieve the pressure. See
Pressure Relief Proce-
dure
on page
8
.
2. See Figure 3. Unscrew the packing nut (2) using a
pipe wrench. Remove the o-ring (27) and washer
(26) from the bottom of the packing housing (25) or
from the outlet housing (3).
3. Place the flats of the packing nut (2) in a vise.
Unscrew the packing housing (25) and discard it
and the packings.
4. Remove the washer (24), seal (23), and back up
washer (22) from the packing nut.
5. The throat repair kit is pre-assembled. Screw the kit
into the packing nut (2), making sure that the
backup washer (22), seal (23), and washer (24) are
properly positioned on top of the packing housing
(25) with the lips of the seal facing down. Torque the
packing housing (25) to 225 +/- 10 ft-lb (305 +/- 14
N•m).
6. Before installing the packing housing into the pump,
generously lubricate the seals with the high tem-
perature grease supplied with the repair kit.
7. If necessary, use an arbor press to install the o-ring
(27) in the packing housing (25).
8. Screw the packing nut (2) and packing housing (25)
into the outlet housing (3). Torque to 150 +/- 30 ft-lb
(203 +/- 41 N•m).
Pump Part No.
Throat Seal Repair Kit
24W152
24V752
24W153
24V753
24W150
24V752
24W151
24V753
F
IG
. 3: Replace Throat Packings
WLD
Torque to 225 +/- 10 ft-lbs (305 +/- 147 N•m).
Torque to 150 +/- 30 ft-lbs (203 +/- 41 N•m).
Lips of the u-cup packing must face down.
1
2
3
