Chesterton 442C - 5 Seal Installation

5.0 SEAL INSTALLATION
5
Gaps at holder splits should be equal on both
sides.
3
Use hex wrench and alternately tighten holder
cap screws to finger-tightness to allow holder
to slide along the shaft. Caution: Care should be
taken not to rotate the rotary holder on the shaft.
2X
Push holder assembly so that plastic installation
spacers contact the stuffing box. Face. Use hex
wrench and alternately tighten holder cap
screws (Refer to Table 3 - Holder Cap screw
Torque Values). Ensure gaps at holder splits are
equal on both sides (see Figure 5).
Caution: DO NOT push directly on seal face.
4
2X
7
Alternately tighten 2 holder set screws (1 per
holder half) (refer to Table 4 – Holder Set
Screw Torque Values).
2X
Table 3
Holder Cap Screw Torque Values
SEAL SIZE
HOLDER
CAP
SCREW* (X)
HEX
WRENCH
SIZE
25 mm to 60 mm
(1" to 2.5")
4,8 Nm
(43 in-lbf)
5/32
65 mm to 120 mm
(2.625" to 4.75")
12,4 Nm
(110 in-lbf)
3/16
* Recommended maximum
Table 4
Holder Set Screw Torque Values
SEAL SIZE
HOLDER
SET SCREW*
(W)
HEX
WRENCH
SIZE
25 mm to 120 mm
(1" to 4.75")
4,3 Nm
(38 in-lbf)
1/8
* Recommended maximum
6
Remove installation spacers; retain for future
use.
2X
8
Clean rotary face with supplied cleaning wipe,
ensuring there is no debris at splits. Caution: Do
not push on seal face - it may cause the seal face
to misalign resulting in seal leakage.
2
Bring rotary holder assembly halves together
over shaft, engaging the pins. Caution: DO NOT
use holder installation spacers as handles. Note:
If shaft cannot be rotated manually, the holder
split line should not align with the gland split line
(refer to steps 12 and 17).
1
Equipment shaft should be cleaned and greased
prior to rotary holder installation. Apply supplied
grease only to face splits. Do not apply grease
to o-ring ends. Caution: Dirt particles on seal
face splits may cause leakage. The rotary holder
should not be rotated on the shaft during Steps
2 through 4 as it may lead to shaft leakage and/
or face damage.
10
Apply supplied grease only to face splits. Do
not apply grease to O-Ring ends. Caution: Dirt
particles on seal face splits may cause leakage.
9
Install gland installation tool between holder
assembly and stuffing box face.
9