Section
E41•T41
Page 507
Dated
June 2016
97-4622-01-588
4.
Service
E41•T41 SERIES
PUMP ENDS
A.
Preliminary
B.
Disassembly C3 & P3(T41)
C.
Disassembly C15 & P15(T41)
D.
Disassembly D3 (E41)
E.
Inspection of Components
F.
Reassembly C3 & P3(T41)
G.
Reassembly C15 & P15(T41)
H.
Reassembly D3 (E41)
I.
Testing and Final Adjustments
4A Preliminary
Before attempting any service on the
pump or motor, disconnect the elec-
trical power to the motor. If the pump
and motor are to be removed as a
unit, note the wiring configuration.
1. Disconnect the inlet and outlet pip-
ing before unbolting the pump and
motor.
2. Unbolt the motor from the base
and remove the unit. All work on
the unit should be performed on
an elevated workbench whenever
possible.
The disassembly and reassembly
procedures are broken into four sec-
tions covering the following units:
4B — Disassembly of the C3 and P3
Units (3 hp and under)
4C — Disassembly of the C15 and
P15 Units (5 hp and up)
4D — Disassembly of the D3 (E41)
Units
4F — Reassembly of the C3 and P3
Units
4G — Reassembly of the C15 and
P15 Units
4H — Reassembly of D3 (E41) Units
Exploded views of each unit, Figures
4-4, 4-5, 4-16, and 4-20, are provided
for referencing the numbers in the
following procedures, i.e. (#1), motor
bracket.
4B Disassembly (T41- C3 and P3)
The following tools and equipment
are needed for disassembly of C3
and P3 units.
1. Soft plastic or wooden mallet.
2. 9/16” wrench or socket.
3. 5/32” hex wrench.
4. Penetrating oil.
5. 1” wood dowel (Approx. 6” long).
6. Thin blade screwdriver.
7. Two large blade screwdrivers.
8. Cealube G or similar glycol base
lubricant. (DO NOT use petroleum
products.)
To disassemble the pump:
Refer to Figures 4-4 and 4-5 for refer-
ence to the numbered parts in the
procedures below.
1. Remove all liquid from the pump.
Air blown through the pump will
remove the water quickly.
2. Remove the four (4) 3/8” X 4” bolts
(#19) from the cover (#2).
3. Remove the cover. In some
cases light tapping with a plastic
or wooden mallet on the outside
diameter of the cover may be
required to loosen it from the
motor bracket. Care should be
taken if a screwdriver is needed to
pry between the cover and motor
bracket. Damage to the “O” ring
(#7) and/or impeller can result.
4. Remove the impeller (#11), refer
to Figure 4-1. The impeller is a
slip fit and, under normal condi
-
tions, can be removed by gently
tapping on the end of the shaft
sleeve with a mallet. Leave the
impeller key (#23) in place. Strik-
ing the sleeve too hard could
damage the seat or rotating ele-
ment.
procedures are followed carefully,
no damage will result from “breaking
loose” the impeller.
3F Cooling Water
When the pump is used to trans-
fer hot fluids, consideration should
be given to cooling the seals and/
or selecting materials that will give
satisfactory seal life. The actual tem-
perature at the seal faces, the most
critical area, will always exceed the
surrounding fluid temperature.
3G Priming
Pumps should not be operated
unless they are completely filled
with liquid. Damage to parts of the
pump that depend on liquid for their
lubrication can occur. Impellers can
seize quickly when a pump is run dry.
Without lubrication, seal faces can be
damaged from heat buildup.
3H Starting
Before starting a pump for the first
time, be sure that all the preceding
operations have been carried out.
Proper rotation, priming, and a free
turning pump are most important.
1. Start the pump with the minimum
possible line restriction.
2. Open discharge valves before
pressing the starter.
3. Start the pump and let the system
clear of air.
4. Listen for foreign material being
carried through the pump.
5. Slowly close necessary valves
or otherwise place the pump into
service.
6. Listen for indications of undue
load or other sounds indicating
problems.
7. Use a clip-on ammeter to check
for a steady load after ap-
proximately fifteen minutes of
operation.
3I Stopping
It is best to stop the pump with the
least discharge head possible both
for minimizing strain on components,
and to be in low power mode in antic-
ipation of restarting.
