To replace a failed seal, you must disassemble the pump.
Remove the impeller nut.
Insert a screwdriver in one
of the impeller waterway passages and back off the
impeller nut.
Remove the impeller.
Insert a screwdriver in the slot
of the motor shaft. Unscrew the impeller while holding the
shaft against the rotation.
Remove the seal, gasket case, adapter and
flinger.
See the exploded view for detail.
Clean the gasket and flange faces, seal seat cav-
ity and shaft.
The shaft shoulder that fits against the
impeller must be clean.
Replace the flinger.
Lubricate the seal seat cavity of
the adapter and the flinger with soapy water solution
before pressing the flinger squarely into the cavity. Do not
chip or scratch the lapped seat face.
Remount the adapter to the motor.
Make sure the
motor shaft does not dislocate or chip the seat of the seal.
Replace the remaining seal components.
Apply a
soapy water solution to the motor shaft and the rubber bel-
lows of the rotating seal. Be sure the rotating seal face
stays in the holding collar during installation. Do not chip
or scratch the lapped seat faces.
Reassemble the remaining components
, holding
the shaft against rotation as previously described. Remove
any burrs caused by the screwdriver on the impeller.
Reattach the pump to the volute case.
Make sure
you replace any damaged gasket or O-ring between the
pump assembly and volute case. Check for free rotation
after assembly is completed.
D
ISASSEMBLING
AND
A
SSEMBLING
3
/
4
- 2
HP
P
UMPS
UGH015/0100
Thermolator TW-1 and TW-2
T
ROUBLESHOOTING
6-23
Pump motor
Flinger*
Pump adapter
Gasket, case*
Seal*
Impeller
D washer*
Impeller nut*
*
Indicates Parts Supplied
in the Seal Repair Kit
1
2
3
4
NOTE:
Before restarting,
close all drain openings using
sealant on the threads and
refill the unit with fluid. Do not
start the the pump when the
unit is dry.
5
6
7
8
9
Summary of Contents for Thermolater vacuTrac
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