ITT Industries Goulds Pumps 3656 Manual

Installation,
Operation and
Maintenance
Instructions
Model
3656/3756
Table of Contents
SUBJECT PAGE
Safety Instructions.......................................................... 2
Description and Specifications ........................................ 2
Engineering Data ........................................................... 2
Installation .................................................................... 2
Location .................................................................... 2
Close-Coupled Units .................................................. 2
Frame-Mounted Units ................................................ 3
SAE Engine Driven Pumps .......................................... 3
Coupling Alignment ....................................................... 3
Frame-Mounted Units Only ........................................ 3
Piping ............................................................................ 4
Suction ...................................................................... 4
Discharge ................................................................... 4
Wiring and Grounding ................................................... 4
Rotation ........................................................................ 4
Operation ...................................................................... 4
Maintenance .................................................................. 5
Disassembly ................................................................... 5
Reassembly .................................................................... 6
Packed Box Instructions ................................................. 6
Trouble Shooting ........................................................... 8
Repair Parts ................................................................... 9
Limited Warranty ........................................................ 12
IM010R06
Owner’s Information
Please fill in information and give this booklet to homeowner.
Warranty information is on page 12.
Model Number:
Serial Number:
Dealer:
Dealer’s Phone No.
Date of Purchase: Installation Date:

2
Engineering Data
Maximum Liquid Temperature:
212°F (100°C) – standard seal or packing
250°F (120°C) – Optional high temp. seal
Maximum Working Pressure (Fluid temperature dependant):
– NPT connections, 200 PSI (1379 kPa)
– 125# ANSI flanged connections, 200 PSI (1379 kPa)
Maximum Suction Pressure: 100 PSI (689.5 kPa)
Starts per Hour: 20, evenly distributed
Group Size Suction Discharge
11⁄2x 2-6 (H) 2" NPT 11⁄2" NPT
1 x 2-7 2" NPT 1" NPT
21⁄2x 3-7 3" NPT 21⁄2" NPT
S3 x 4-7 4" Flange 3" Flange
1 x 2-8 2" NPT 1" NPT
11⁄2x 2-8 2" NPT 11⁄2" NPT
2 x 2-5 2" NPT 2" NPT
21⁄2x 21⁄2-5 21⁄2" NPT 21⁄2" NPT
LH 3 x 3-5 3" NPT 3" NPT
4 x 4-5 4" Flange 4" Flange
5 x 5-6 5" Flange 5" Flange
21⁄2x 3-8 3" NPT 21⁄2" NPT
3 x 4-8 4" Flange 3" Flange
4 x 5-8 5" Flange 4" Flange
11⁄2x 2-10 2" NPT 11⁄2" NPT
21⁄2x 3-10 3" Flange 21⁄2" Flange
M3 x 4-10 4" Flange 3" Flange
4 x 6-10 6" Flange 4" Flange
21⁄2x 3-13 3" Flange 21⁄2 " Flange
3 x 4-13 4" Flange 3" Flange
4 x 6-13 6" Flange 4" Flange
6 x 8-13 8" Flange 6" Flange
L8x 10-13 10" Flange 8" Flange
4 x 6-16 6" Flange 4" Flange
Installation
LOCATION
• Locate the pump as near liquid source as practical; below
level of liquid for automatic repriming capability.
• Allow adequate space for servicing and ventilation. Protect
the unit from weather and water damage due to rain,
flooding or freezing temperatures.
• Protect the pump and piping from freezing temperatures.
• Allow adequate space around the unit for service and
ventilation.
CLOSE-COUPLED UNITS
• Units may be installed horizontally, inclined or vertically with
the motor above the pump.
• The motor feet MUST be bolted to a substantial surface
(horizontal or vertical) that is capable of complete and rigid
support for the pump and motor. For L-Group pumps, the
motor adapter feet must also be bolted to the supportive
surface.
• For vertical operation, the motor should be fitted with a drip
cover or otherwise protected against liquid entering the
motor (rain, spray, condensation, etc.)
NOTICE: DO NOT INSTALL WITH MOTOR
BELOW PUMP. ANY LEAKAGE OR
CONDENSATION WILL AFFECT
THE MOTOR.
SAFETY INSTRUCTIONS
TO AVOID SERIOUS OR FATAL PERSONAL INJURY
OR MAJOR PROPERTY DAMAGE, READ AND
FOLLOW ALL SAFETY INSTRUCTIONS IN THE
MANUAL AND ON THE PUMP.
This is a SAFETY ALERT SYMBOL.
When you see this symbol on the pump or
in the manual, look for one of the following
signal words and be alert to the potential for
personal injury or property damage.
Warns of hazards that WILL cause serious
personal injury, death or major property
damage.
Warns of hazards that CAN cause serious
personal injury, death or major property
damage.
Warns of hazards that CAN cause personal
injury or property damage.
NOTICE: INDICATES SPECIAL INSTRUCTIONS
WHICH ARE VERY IMPORTANT AND
MUST BE FOLLOWED.
THIS MANUAL IS INTENDED TO ASSIST IN THE
INSTALLATION AND OPERATION OF THIS UNIT.
THOROUGHLY REVIEW ALL INSTRUCTIONS AND
WARNINGS PRIOR TO PERFORMING ANY WORK
ON THIS PUMP.
MAINTAIN ALL SAFETY DECALS.
NOTICE: INSPECT UNIT FOR DAMAGE AND
REPORT ALL DAMAGE TO CARRIER
IMMEDIATELY.
UNIT NOT DESIGNED FOR USE
WITH HAZARDOUS LIQUIDS OR
FLAMMABLE GASES.
DESCRIPTION and SPECIFICATIONS
The series 3656/3756 are single stage, end suction, centrifugal
pumps for general liquid transfer, booster applications,
irrigation and general service pumping. Pumps are available in
three different materials of construction: all iron, bronze-fitted
and all bronze (“S” group only).
Pump impellers are fully enclosed, key driven and held in
position by an impeller bolt and washer. Casings are full volute
in design with replaceable wear rings.
Dependant on the pump size, the suction and discharge
connections will be threaded or flanged. Shafts are protected
with stainless steel shaft sleeves.
Close-coupled units have NEMA standard JM or JP motors
with C-face mounting and key driven shaft extension. SAE
drive units bolt directly to the engine flywheel housing for SAE
sizes 1, 2, 3, 4 or 5. Optional elastomer element couplings are
available for 61⁄2, 71⁄2, 8, 10, 111⁄2and 14 inch flywheels. Frame
mounted units can be coupled to motors through a spacer
coupling, or belt driven.
DANGER
WARNING
CAUTION
WARNING
Hazardous fluids
can cause fire,
burns or death.

3
• For L-Group pumps it is recommended that the pump is
supported beneath the two feet cast into the motor adapter
(3). These feet must be bolted to the support.
• Begin the assembly of the pump to the engine by thoroughly
cleaning the engine flywheel and flywheel housing.
• For Goulds Pumps optional couplings – Ensure that the
coupling hub set screw is backed out enough to ensure
clearance for the shaft key during assembly. Mount the
coupling assembly to the engine flywheel using the bolts
provided torqued as follows in a crossing sequence:
61⁄2" or 71⁄2" Flywheel – 11 lbs.-ft. (15 N.m)
8", 10" or 111⁄2" Flywheel – 20 lbs.-ft. (27 N.m)
14" Flywheel – 50 lbs.-ft. (68 N.m)
(For other couplings follow manufacturers
recommended installation procedure.)
• Place the pump shaft key into the pump shaft (122) and align
the shaft to the coupling. Slide the pump into the coupling
until the engine adapter ring (340) contacts the engine
flywheel housing.
• Mount the pump to the engine using the bolts and lock-
washers provided, torqued as follows in a crossing sequence:
SAE #2, #3, #4, #5 – 20 lbs.-ft. (27 N.m)
SAE #1 – 50 lbs.-ft. (68 N.m)
• Install coupling guards (501N).
• Bolt motor adapter (3) to the rigid support described above.
Coupling Alignment
FAILURE TO DISCONNECT AND
LOCKOUT ELECTRICAL POWER
BEFORE ATTEMPTING ANY
MAINTENANCE CAN CAUSE
SEVERE PERSONAL INJURY.
FRAME-MOUNTED UNITS ONLY
• Alignment MUST be checked prior to running. See Figure 2.
Figure 2
• Tighten all hold-down bolts before checking alignment.
• If realignment is necessary, always move the motor. Shim
as required.
• Parallel misalignment, shafts with axis parallel but not
concentric. Place dial indicator on one hub and rotate this
hub 360°while taking readings on the outside diameter of
the other hub. Parallel alignment is achieved when reading is
0.010" (0.254 mm) TIR, or less.
• Angular misalignment, shaft with axis concentric but not
parallel. Place dial indicator on one hub and rotate this hub
360°while taking readings on the face of the other hub.
Angular alignment is achieved when reading is 0.020"
(0.508 mm) TIR, or less.
Sleeve
Washer
Lug
Top of foundation –
clean and wet down
Grout
Leveling wedges or shims – left in place
BaseGrout hole
(
1
⁄ 4 ”)
Finished grouting
(
1
⁄ 2 to
3
⁄ 4 ”)
Allowance
for leveling
Wood
frame
FRAME-MOUNTED UNITS
• A flat substantial foundation surface MUST be provided to
avoid distortion and/or strain when tightening the
foundation bolts. A rubber mounting is acceptable to reduce
noise or excessive vibration.
• Tighten motor hold-down bolts BEFORE connecting piping
to pump.
Figure 1
• It is recommended that the baseplate be grouted to a
foundation with solid footing. Refer to Figure 1.
• Place unit in position on wedges located at four points, two
below approximate center of driver and two below
approximate center of pump. Adjust wedges to level unit.
Level or plumb suction and discharge connections.
• Make sure bedplate is not distorted and final coupling
alignment can be made within the limits of movement of
motor and by shimming, if necessary.
• Tighten foundation bolts finger tight and build dam around
foundation. Pour grout under bedplate making sure the areas
under the pump and motor feet are filled solid. Allow grout
to harden 48 hours before fully tightening foundation bolts.
• Tighten pump and motor hold-down bolts before aligning
shaft or connecting the piping to pump.
• Allow grout to harden for 48 hours before tightening 4
foundation bolts.
SAE – Engine Driven Pumps
The SAE engine drive bearing frame is designed to bolt directly
to the flywheel housing for engines with an SAE no. 1, 2, 3, 4
or 5 mount. The pump shaft extension is sized for use with
couplings bolted directly to the flywheel. Goulds Pumps
optional couplings are sized for 61⁄2", 71⁄2", 8", 10", and 14"
flywheels. Although other flywheel mount couplings may be
used, it is recommended that the Goulds Pumps coupling be
used to ensure long and trouble-free operation from your
Goulds Pump.
INSTALLATION
• The pump may be installed horizontally, with the discharge
rotated to any position allowed by the casing bolt pattern
(13). It is recommended that the discharge be located
horizontally, above the suction.
• The casing must be supported on all pumps by a rigid
support which is anchored to the unit base or foundation.
• For M-Group pumps it is recommended that this support is
bolted to the motor adapter ring using 2 or more of the
casing bolts (13). It is likely that longer bolts will be required
for the additional support thickness. Use SAE grade 5 bolts,
torqued as indicated in this manual.
Hazardous machinery
can cause personal
injury or death.
WARNING
Parallel
Angular

4
• Final alignment is achieved when parallel and angular
requirements are satisfied with motor hold-down bolts tight.
NOTICE: ALWAYS RECHECK BOTH ALIGNMENTS
AFTER MAKING ANY MECHANICAL
ADJUSTMENTS.
Piping
• Piping should be no smaller than pump’s discharge and
suction connections and kept as short as possible, avoiding
unnecessary fittings to minimize friction losses. See Table 1.
• All piping MUST be independently supported and MUST
NOT place any piping loads on the pump
NOTICE: DO NOT FORCE PIPING INTO PLACE
AT PUMP SUCTION AND DISCHARGE
CONNECTIONS.
• All pipe joints MUST be airtight.
PIPING – SUCTION
• For suction lifts over 10 ft. (3 m) and liquid temperatures
over 120°F (49°C), consult pump performance curve for
net positive suction head required (NPSHR).
• If a pipe size larger than pump suction is required, an
eccentric pipe reducer, with the straight side up, MUST be
installed at the pump suction.
• If pump is installed below the liquid source, install a gate
valve in the suction for pump inspection and maintenance.
NOTICE: DO NOT USE THE GATE VALVE TO
THROTTLE PUMP. THIS MAY CAUSE LOSS
OF PRIME, EXCESSIVE TEMPERATURES
AND DAMAGE TO PUMP, VOIDING
WARRANTY.
• If the pump is installed above the liquid source, the following
MUST be provided:
• To avoid air pockets, no part of the piping should be above
the pump suction connection.
• Slope the piping upward from liquid source.
• Use a foot valve or check valve ONLY if necessary for
priming or to hold prime during intermittent duty.
• The suction strainer or suction bell MUST be at least
3 times the suction pipe diameter area.
• Insure that the size and minimum submergence over
suction inlet is sufficient to prevent air from entering pump
through a suction vortex. See Figures 3 through 6.
PIPING – DISCHARGE
• Install a check valve suitable to handle the flow, liquids and
to prevent backflow. After the check valve, install an
appropriately sized gate valve to be used to regulate the
pump capacity, pump inspection and for maintenance.
• When required, pipe increaser should be installed between
the check valve and the pump discharge.
Wiring and Grounding
Install, ground and wire according to
local and National Electrical Code
Requirements.
Install an all leg electrical power
disconnect switch near the pump.
Disconnect and lockout electrical
power before installing or servicing
the pump.
Electrical supply MUST match
pump’s nameplate specifications.
Incorrect voltage can cause fire,
damage motor and void the warranty.
Motors without built-in protection MUST be provided
with contactors and thermal overloads for single phase
motors, or starters with heaters for three phase motors.
See motor nameplate.
• Use only copper wire to motor and ground. The ground
wire MUST be at least as large as the wire to the motor.
Wires should be color coded for ease of maintenance.
• Follow motor manufacturer’s wiring diagram on the motor
nameplate or terminal cover carefully.
FAILURE TO PERMANENTLY
GROUND THE PUMP, MOTOR AND
CONTROLS BEFORE CONNECTING
TO ELECTRICAL POWER CAN CAUSE
SHOCK, BURNS OR DEATH.
Rotation
NOTICE: INCORRECT ROTATION MAY CAUSE
DAMAGE TO THE PUMP AND VOIDS
THE WARRANTY.
• Correct rotation is right-hand, CLOCKWISE when viewed
from the motor end. For frame mounted units, switch power
on and off quickly to observe rotation. On close coupled
units, remove motor end plug or cover to observe rotation.
• To reverse three phase motor rotation, interchange any two
power supply leads.
Operation
DO NOT OPERATE FRAME
MOUNTED OR SAE UNITS WITHOUT
SAFETY GUARDS IN PLACE OR
SEVERE PERSONAL INJURY MAY
RESULT.
Figure 5 Figure 6
H min.
DD
H min.
D D
1.5D
min.
3.0D
min.
H min.
D min.
2
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
H = Min. Submergence in feet
H
12345678910111213141516V
V = Velocity in feet per second
= GPM x 0.321
Area
GPM x 0.4085
D
2
Figure 3 Figure 4
WARNING
Hazardous voltage
can shock, burn or
cause death.
WARNING
Hazardous
voltage
Hazardous machinery
can cause personal
injury or death.
WARNING

5
SPLASHING OR IMMERSING OPEN
DRIP PROOF MOTORS IN FLUID CAN
CAUSE FIRE, SHOCK, BURNS OR
DEATH.
OPERATION AT OR NEAR ZERO
FLOW CAN CAUSE EXTREME HEAT,
PERSONAL INJURY OR PROPERTY
DAMAGE.
NOTICE: NO NOT RUN PUMP DRY OR SEAL
DAMAGE WILL RESULT.
• After stabilizing the system at normal operating conditions,
check the piping. If necessary, adjust the pipe supports.
• On frame-mounted units, coupling alignment may have
changed due to the temperature differential between pump
and motor. Recheck alignment following procedures and
hazard warnings in “COUPLING ALIGNMENT” section
of this manual.
Maintenance
FAILURE TO DISCONNECT AND
LOCKOUT ELECTRICAL POWER
BEFORE ATTEMPTING ANY
MAINTENANCE CAN CAUSE SHOCK,
BURNS OR DEATH.
FAILURE TO RELIEVE SYSTEM
PRESSURE AND DRAIN SYSTEM
BEFORE ATTEMPTING ANY
MAINTENANCE CAN CAUSE
PROPERTY DAMAGE, PERSONAL
INJURY OR DEATH.
IF PIPING HAZARDOUS OR TOXIC
FLUIDS, SYSTEM MUST BE FLUSHED
PRIOR TO PERFORMING SERVICE.
CLOSE-COUPLED UNITS
• Bearings are located in and are part of the motor. For
lubrication information, refer to motor manufacturer’s
instructions.
FRAME-MOUNTED UNITS
• Model 3756 S-group has greased for life bearings.
No regreasing is possible or necessary.
• Model 3756 M or L-group bearing frame and SAE drive
bearing frame should be regreased every 2,000 hours or at a
three month interval, whichever occurs first. Use a #2
sodium or lithium based grease. Fill until grease comes out of
relief fittings, or lip seals, then wipe off excess.
• Follow motor or engine and coupling manufacturer’s
lubrication instructions.
• Recheck alignment.
SEASONAL SERVICE
• To REMOVE pump from service, remove drain plug and
drain all unprotected piping.
• To RETURN pump to service, replace drain plug using
Teflon™ tape or equivalent on male threads.
• Reconnect suction line if removed, examine union and repair
if necessary.
• Refer to OPERATION section of manual.
Disassembly
• Follow ALL warnings and instructions in the
“MAINTENANCE” section of this manual.
• Close-coupled units: Remove motor hold-down bolts.
• Frame-mounted units: Remove coupling guard, spacer,
coupling and frame hold-down bolts.
LIQUID END
1. Remove casing bolts (13).
2. Remove back pull-out assembly from casing (1).
3. Remove casing wear ring (4) if excessively worn.
NOTICE: DO NOT INSERT SCREWDRIVER BETWEEN
IMPELLER VANES TO PREVENT ROTATION.
4. On close-coupled units, remove motor end plug or cover
to expose screwdriver slot or flats on end of motor shaft.
5. While restraining shaft with an appropriate tool (close-
coupled units) or with a strap wrench (frame-mounted
units) remove impeller bolt (6). Impeller bolt may need
to be heated with torch to remove. Discard.
NOTICE: EXERCISE CAUTION WHEN HANDLING
HOT IMPELLER BOLT.
NOTICE: FOR SAE DRIVE UNITS, REMOVE IMPELLER
NUT SET SCREW (22A) PRIOR TO
REMOVING IMPELLER NUT (22). IMPELLER
SET SCREW AND IMPELLER NUT MAY NEED
TO BE HEATED TO BE REMOVED.
6. Remove impeller washer (7).
7. Insert two pry bars, 180°apart, between impeller (2) and
seal housing (3). CAREFULLY pry off impeller.
8. Remove impeller key (8).
9. Remove seal housing bolts (14) and seal housing (3)
pulling with it the mechanical seal assembly. Discard seal
assembly and seal housing o-ring (9). For packed box
pumps see “PACKED BOX INSTRUCTIONS”.
10. Remove adapter (108).
11. Inspect shaft sleeve (11). If badly scored, remove by
heating with torch. Discard.
12. Push out the mechanical seal stationary seat from the
seal housing. Discard.
WARNING
Hazardous voltage
can shock, burn or
cause death.
Extreme heat can
cause personal injury
or property damage.
WARNING
Hazardous fluids can
cause personal injury
or property damage.
WARNING
WARNING
Hazardous voltage
can shock, burn or
cause death.
Hazardous pressure
can cause personal
injury or property
damage.
CAUTION

6
13. On units equipped, remove seal housing wear ring (5)
if excessively worn.
DISASSEMBLY OF BEARING FRAME OR
SAE BEARING FRAME
1. Remove deflector (123) from shaft.
2. Remove bearing cover (134).
3. Remove shaft assembly from frame.
4. Remove lip seals (138, 139) from bearing frame (228) and
bearing cover (134) if worn. Discard.
5. Remove retaining ring (361).
6. Use bearing puller or arbor press to remove ball
bearings (112, 168).
Reassembly
• All parts should be cleaned before assembly.
NOTICE: O-RING SHOULD BE REPLACED AFTER ANY
DISASSEMBLY OF UNIT.
BEARING FRAME
1. Replace lip seals if removed.
2. Replace ball bearings if loose, rough or noisy when rotated.
3. Check shaft (122) for runout. Maximum permissible is
0.002" (0.05 mm) TIR.
4. Refer to the “MAINTENANCE” section of this manual
for M-group bearing frame regreasing instructions.
LIQUID END
1. Inspect shaft removing any debris or burrs.
2. Treat shaft with LOCQUIC®Primer “T”, or equivalent,
following manufacturer’s instructions carefully.
3. When replacing shaft sleeve, spray new shaft sleeve’s bore
with LOCQUIC®Primer “T”, or equivalent. Let parts dry
and then apply LOCTITE®#262 on the same surfaces.
Slide new sleeve over shaft with a twisting motion, wipe
off excess. Let cure according to instructions.
NOTICE: MECHANICAL SEAL MUST BE REPLACED
WHENEVER SEAL HAS BEEN REMOVED.
FOLLOW SEAL MANUFACTURER’S
INSTRUCTIONS CAREFULLY. FOR PACKED
BOX PUMPS SEE “PACKED BOX
INSTRUCTIONS”.
4. Replace seal housing wear ring, if removed.
5. For mechanical seal pumps, stationary seal seat may be
dipped in water to ease installation. Place stationary seal
seat squarely into seal housing bore. Cover the polished
face of the seat with a thin piece of cardboard or paper
towel. Press seat firmly into bore using a round piece of
plastic or wood that disperses the force over the entire
seal face. NOTE: If mechanical seal is supplied with a
spring retainer, remove and discard the retainer.
6. Place adapter, concave face pointing up, over motor
shaft and lower it onto the motor.
7. Replace seal housing o-ring. This o-ring may be lubricated
with water or glycerin to ease in installation. Install seal
housing on adapter. Exercise care in that the motor shaft
does not dislodge or damage seal seat.
8. Fully and squarely install the rotary assembly of seal
against the stationary seat.
NOTICE: REPLACE IMPELLER BOLT AND WASHER
WHENEVER IMPELLER IS REMOVED.
9. Install impeller key in shaft keyway. Mount impeller on
shaft and push until it bottoms. Hold in place. For SAE
units, apply LOCTITE 271 to the impeller bore, keyway
and shaft. Mount impeller on shaft and push until it
bottoms. Hold in place.
10. Install new impeller washer. Impeller washer not used for
SAE units..
11. Apply LOCTITE
®
#271 or equivalent, to new impeller bolt
threads and tighten to:
3⁄8"-16 bolts 20 lbs.-ft. (27 N.m)
1⁄2"-13 bolts 38 lbs.-ft. (51 N.m)
Impeller bolt not used for SAE units.
12. For SAE units apply LOCTITE
®
#271 to the external
threads of the shaft and internal threads of the impeller
nut (22). Tighten impeller nut to the following:
1⁄2"-Impeller Nut (SAE M-Group) 80 lbs.-ft. (107 N.m)
3⁄4"-Impeller Nut (SAE L-Group) 100 lbs.-ft. (134 N.m)
13. For SAE units, after impeller nut (22) has been installed,
apply LOCTITE
®
#271 to set screw (22A). Install impeller
set screw into face of impeller nut (22) and tighten
hand-tight.
14. Replace casing wear ring, if removed.
15. Replace casing bolts and tighten, in a crossing sequence,
to torque values indicated below:
3⁄8"-16 bolts (bronze casing) 25 lbs.-ft. (34 N.m)
1⁄2"-16 bolts (cast iron casing) 37 lbs.-ft. (50 N.m)
1⁄2"-13 bolts (cast iron casing) 90 lbs.-ft. (122 N.m)
3⁄4"-10 bolts (cast iron casing) 175 lbs.-ft. (237 N.m)
16. Check reassembled unit for binding by rotating shaft with
appropriate tool from motor end.
17. If rubbing exists, loosen casing bolts and proceed with
tightening sequence again.
18. Replace motor hold-down bolts and motor end plug or
cover on close-coupled units.
19. Replace coupling, spacer, coupling guard and frame
hold-down bolts on frame-mounted units.
NOTICE: ALWAYS RECHECK BOTH ALIGNMENTS
AFTER MAKING ANY ADJUSTMENTS.
20. Refer to the “COUPLING ALIGNMENT” section of
this manual to realign shaft.
21. Assembly is complete.
Packed Box
1. Make sure stuffing box is free of foreign materials and
clean before beginning packing of packed box. Refer to
Sectional Assembly in the repair parts section.
2. Take special care during installation of packing rings
because they are die-formed. To install, twist the ring
sideways just enough to fit it around the shaft sleeve.
DO NOT ATTEMPT TO PULL RINGS STRAIGHT
OUT. See Figure 7.
Figure 7
CORRECT WRONG

7
3. Install the two piece Teflon lantern ring supplied as shown
in figure 8. Note: two pieces make one ring. Notches on
ring must face each other, but alignment is not necessary.
4. Install the packing rings and lantern ring in the following
sequence to pack the packed box. Install two rings of
packing, then the lantern ring, followed by the final three
rings of packing. Install each ring separately and firmly
seat. The use of a wooden split bushing is recommended
to accomplish this. See Figure 9. Use gland to jack the
bushing and ring into the box. Stagger joints in each ring
90°. Make sure the flush tap in the packed box lines up
with the center of the lantern ring. Any extra rings are
spares.
5. Tighten gland nuts evenly, but not tight. When the pump
is started, slowly tighten the gland nuts until the leak rate
is between 40 and 60 drops per minute. A grease lubricant
can be used when the pumpage contains abrasive particles
or for a suction lift condition.
REMOVAL OF PACKED BOX
• Follow these steps to remove the packing from the
packed box.
1. Remove gland assembly.
2. With a “packing hook” remove packing.
3. Insert a wire hook into the ring on the outer edge to
remove the lantern ring.
4. Clean the packed box.
PRIME SAFE ARRANGEMENT (Optional – M & L Group Only)
• The Prime Safe arrangement can be provided with grease or
an oiler feed lubrication.
1. The grease gland (24) will have the letters "G" and "O"
stamped on the outside diameter and have two 1⁄8" NPT
connections for mounting a grease feeder or oiler.
2. For grease feed applications, the grease gland is assembled
with the "G" stamp in the 12 o' clock position. The grease
feeder (23) will mount in the grease gland at a 30 degree
angle from the horizontal. This is done to gain access to the
grease fitting located on the grease feeder. The lip seal (26)
mounted in the grease gland will be assembled as shown in
Figure 10.
3. For oiler feed applications, the grease gland is assembled
with the "O" stamp in the 12 o' clock position. The two
1⁄8" NPT connections on the grease gland will be located on
the horizontal, which is to ensure proper function of the
oiler. The lip seal (26) is to be mounted in the reverse or
opposite direction as shown in Figure 10.
4. The mounting of a grease feeder or oiler may require
additional pipe extensions and/or fittings that will be
provided from the factory as needed.
5. The grease feeder (23) will come with three springs (blue,
red and silver). The use of the different springs will be
varied depending on the operating temperature and the
lubricant (grease) to be used.
Grease Feeder Spring Size
Operating Temperature No. 1 Grease No. 2 Grease No. 3 Grease
-10ºF (-23ºC) to 40ºF (4ºC) SILVER RED —
-40ºF (-40ºC) to 110ºF (43ºC) SILVER SILVER RED
-110ºF (-79ºC) to 200ºF (93ºC) BLUE SILVER SILVER
Teflon Lantern Ring
Figure 8
Figure 9
STUFFING
BOX
WOODEN “SPLIT BUSHING”
SHAFT
GLAND
Figure 10
23
26
24
22
7

8
WARNING
Hazardous voltage
can shock, burn or
cause death.
Trouble Shooting Guide
DISCONNECT AND LOCKOUT
ELECTRICAL POWER BEFORE
ATTEMPTING ANY MAINTENANCE.
FAILURE TO DO SO CAN CAUSE A
SHOCK, BURN OR DEATH.
SYMPTOM
MOTOR NOT RUNNING
See Probable Cause – 1 through 5
LITTLE OR NO LIQUID DELIVERED
See Probable Cause – 6 through 13
EXCESSIVE POWER CONSUMPTION
See Probable Cause – 3, 13, 14, 15
EXCESSIVE NOISE and VIBRATION
See Probable Cause – 3, 6, 7, 10, 12, 14, 16, 17
PROBABLE CAUSE
1. Motor thermal protector tripped
2. Open circuit breaker or blown fuse
3. Impeller binding
4. Motor improperly wired
5. Defective motor
6. Pump is not primed, air or gases in pumpage
7. Discharge, suction plugged or valve closed
8. Incorrect rotation (3 phase only)
9. Low voltage or phase loss
10. Impeller worn or plugged
11. System head too high
12. NPSHAtoo low – Excessive Suction lift or losses
13. Incorrect impeller diameter
14. Discharge head too low – excessive flow rate
15. Fluid viscosity, specific gravity too high
16. Worn bearing
17. Pump, motor or piping loose

9
LIQUID END COMPONENTS
Item No. Description Material
1Casing
2Impeller Cast iron or sil-brass*
3Adapter
4Wear ring (casing) Cast iron or bronze*
5** Wear ring (seal housing)
6Impeller bolt
7Impeller washer
8Impeller key
9Seal housing o-ring (optional materials) BUNA-N/EPR/Viton
10 Mechanical seal Consult factory
11 Shaft sleeve AISI Type 300
stainless steel
12 Drain plug – 1⁄4or 3⁄8NPT
13 Hex head cap screw (casing to adapter) Zinc plated steel
14 Hex head cap screw (adapter to motor/frame)
15 Hex head cap screw (Adapter to seal housing)
16 Lantern ring Teflon™
17 Packing, 5 rings Teflon™ impregnated
18 Gland AISI 316SS
19 Shaft sleeve
20 Gland stud
21 Gland nut
22 SAE Impeller nut 304 SS
22A Set screw, impeller nut
23 Grease feeder (oiler optional) Polycarbonate
Repair Parts Series 3656/3756
AISI Type 300
stainless steel POWER END COMPONENTS (shown on next page)
Item No. Description Material
112 Ball bearing (outboard) Steel
122 Pump shaft
122A Pump shaft (SAE) AISI 4140 steel
123 V-ring, deflector BUNA-N
134 Bearing cover Cast iron
138 Lip seal (outboard) BUNA-N
139 Lip seal (inboard)
168 Ball bearing (inboard) Steel
193 Grease fitting (M & L group)
327C Screw (cover to adapter) (SAE only) Zinc plated steel
340 Adapter/engine (SAE only) Cast iron
361 Retaining ring Steel
370C Hex head cap screw (frame to cover) Zinc plated steel
371C Hex head cap screw (adapter to frame)
(SAE only) NOT SHOWN Steel
399 Key, coupling
501N Cover/adapter (SAE only) Galvanized steel
SAE M & L
Replaces 6 & 7
46 7 8 2 5910 3 11
13
12 1 14
AISI Type 300
stainless steel
LIQUID END COMPONENTS
Item No. Description Material
24 Grease gland Aluminum
25 Pipe plug Zinc plated steel
26 Lip seal Buna
* Lead free
** Item #5 supplied on S-group model 21⁄2x 3-7 (71⁄2, 10 and 15 HP) and
M-group (except 3 x 4-10).
16 17 18
20
19
21
Packed Box Arrangement
3
Prime Safe Arrangement (optional – M & L group only)
10 3
23
11
26
24
25
2222A

10
123 168 122 134
138
361 370C112
139 399
123 371L
134
501N
112193168
139
370C
340
327C
138
193
361
168
370C
193 134
138
112122193123
361
S-Group Power Frame M-Group Power Frame
168
139
370C
193 134
138
112122193123
361
122A
L-Group Power Frame SAE Power Frame
3656/3756 Power Frames
399 399
399