REPAIR INSTRUCTIONS
TYPE AE PUMPS
PACKED
Read this entire bulletin
before attempting to repair this pump. For installation
and operation refer to instruction bulletin 2880549.
Properly installed, your Peerless pump will give you satisfactory, dependable service. We urge that you carefully
read these step-by-step instructions, to simplify any
problems of installation, operation or repair.
Failure to read and comply with installation and operating instructions will void the responsibility of the
manufacturer and may also result in bodily injury as well
as property damage.
This bulletin is intended to be a permanent part of your
pump installation and should be preserved in a convenient location for ready reference. If these instructions
should become soiled, obtain a new copy from Peerless
Pump. Include pump model and/or serial number with
your request.
Peerless Pump Company
-
These instructions are prepared for a pump with grease or
oil lubricated bearings and packed stuffing boxes. Optional
features are covered by separate instruction sheets which
are furnished when the equipment supplied includes these
features.
Model numbers used in Table I are for the commercial
pumps. Listed and approved fire pumps have the letters
“AEF” in place of “AE” in the model number. Many
models have suffix letters in the model number. These
suffix letters have been intentionally omitted from Table
I. However, when ordering repair parts, provide the
complete model number including suffix letters and the
pump serial number; both are stamped on the pump
nameplate.
4851938
Rev. 11/93
WARRANTY
New equipment manufactured by Seller is warranted to
be free from defects in material and workmanship under
normal use and service for a period of one year from date
of shipment; Seller’s obligation under this warranty being
limited to repairing or replacing at its option any part
found to its satisfaction to be so defective provided that
such part is, upon request, returned to Seller’s factory
from which it was shipped, transportation prepaid. This
warranty does not cover parts damaged by
decomposition from chemical action or wear caused by
abrasive materials, nor does it cover damage resulting
from misuse, accident, neglect, or from improper
operation, maintenance, installation, modification or
adjustment. This warranty does not cover parts repaired
outside Seller’s factory without prior written approval.
Seller makes no warranty as to starting equipment,
electrical apparatus or other material not of its
manufacture, since the same are usually covered by
warranties of the respective manufacturers thereof.
Do not operate this pump at any pressure, flow rate, or liquid
temperature other than those for which the pump was
originally purchased. Do not pump any other liquid than the
one for which the pump was originally purchased
WARNING
-
Before starting disassembly of the pump, it is recommended that a set of spare parts as shown on page 8 be
obtained. Peerless Pump does not recommend reuse of
gaskets, O-rings, packing rings, or ball bearings.
Shut down pump. Disconnect power to the pump driver
before starting any repairs. Refer to
Bulletin No. 2880549
for the procedure to follow.
WARNING
1-1. Disengage the coupling halves. Refer to the coupling
manufacturers’ instructions.
1-2. PUMP. (See Figure 1.) Disassemble pump to the
extent required as follows:
a. Remove the nuts from the gland bolts (17B) and
remove packing glands (17) from the shaft (6). The
packing gland halves are separable.
b. Remove all nuts or cap screws from the upper casing
(1B) and from the bearing caps (41 & 43). Match mark
bearing caps to lower casing (1A).
c. Use the jack screws (not shown) on the bottom side of
the lower casing split flange to separated the upper and
lower casings. Turn the jack screws back below the split
flange surface to avoid reassembly interference.
4851938
In the event, notwithstanding the terms of this agreement, it
is determined by a court of competent jurisdiction that an
express warranty has been given by Seller to Purchaser with
respect to the head, capacity or other like performance
characteristics of said equipment, Seller’s liability for breach
of the same shall be limited to accepting return of such
equipment F.O.B. plant of manufacture, refunding any
amount paid thereon by Purchaser (less depreciation at the
rate of 15% per year if Purchaser has used the equipment
for more than thirty (30) days) and canceling any balance
still owing on the equipment.
THIS WARRANTY IS EXPRESSLY IN LIEU OF ANY
OTHER WARRANTIES, EXPRESSED OR IMPLIED,
AND SELLER SPECIFICALLY DISCLAIMS ANY
IMPLIED WARRANTY OF MERCHANTABILITY OR
FITNESS FOR A PARTICULAR PURPOSE.
Without the consent of Peerless Pump or its authorized
representatives. Disregard of this warning can result in
pump failure and serious personal injury or death.
d. Attach hoist to customer-furnished eye bolt in upper
casing. Use eye bolt to lift upper casing only. Eye bolt
must have ½-13 UNC external thread.
e. Place slings around the shaft near the bearing
housings and lift rotating element from lower casing (1A).
Tap lightly on the underside of the bearing housings to
separate the housings from the brackets.
f. Place rotating element in a convenient work place.
1-3. ROTATING ELEMENT. Disassemble in the following manner:
a. Loosen set screws and remove the coupling half. Tap
from the back of the hub or use a puller. Remove
coupling key (46), and outboard deflector (40B).
b. Take out cap screws to remove bearing covers (35,37)
and the gaskets (73B). Remove inboard bearing cover
seal (47) from cover (35) only if replacement of seal is
required.
c. Remove retaining ring (18A) from outboard end of
shaft.
d. Remove housings (31 & 33), bearings (16 & 18), and
bearing housing seals (169) as units with a bearing
puller. Remove deflectors (40A).
e. Remove casing rings (7). On most pump this may be
done before removing the coupling half.
2
Item
FIG
URE 1
* For oil lubricated construction, bearing end cover (123) is gasketed to the outboard bearing housing
3
No.
1A
1B
2 Impeller
6 Shaft
7 Casing Ring
8 Impeller Ring (Optional)
13 Packing Ring
14, 14A Shaft Sleeve
14B Shaft Sleeve O-Ring
16 Inboard Ball Bearing
17 Packing Gland
17A Gland Clip (when used)
17B Gland Bolt
18 Outboard Ball Bearing
18A Bearing Retaining Ring
29 Lantern Ring (Optional)
31 Inboard Bearing Housing
Lower Casing
Upper Casing
Description
Item
No.
32 Impeller Key
33 Outboard Bearing Housing
35 Inboard Bearing Housing Cover
37 Outboard Bearing Housing Cover
40A Inboard Deflector
40B Outboard Deflector
41 Inboard Bearing Housing Cap
43 Outboard Bearing Housing Cap
46 Coupling Key
47 Inboard Bearing Cover Seal
63 Stuffing Box Bushing
73A Casing Casket (Not Shown)
73B Bearing Cover Gasket
123 Bearing End Cover
127 Water Seal Piping (Optional)
169 Bearing Housing Seal
cover (37) with a silicone gasket material such as loctite superflex ultra blue.
Description
4851938
f. Remove packing rings (13), lantern rings (29) if provided, and stuffing box bushings (63).
g. Loosen shaft sleeve set screws then loosen shaft
sleeves (14 & 14A) with a spanner wrench. Sleeve (14)
has right-hand thread, sleeve (14A) has left-hand thread.
Remove sleeves from shaft.
NOTE
A seal between the shaft and sleeve is made with an Oring (14B) in a groove in the sleeve. Use care not to
damage the O-ring.
h. Remove the impeller with an arbor press or a tube
and hammer.
NOTE
The interference between impeller hub ID and shaft OD
meets ANSI B4.1 standards for “Preferred Limits and
Fits for Cylindrical Parts” and corresponds to standard fit
LC-1.
i. Remove impeller key (32).
1-4. CLEANING. Clean all metal parts (except bearings)
with a solvent. Use a bristle brush (NOT metal or wire) to
remove tightly adhering deposits. A fiber scraper may be
used to remove the gasket and shellac from casing flanges.
2-1. INSPECTION. Visually inspect parts for damage
affecting serviceability or sealing. Emphasize inspection
of mating parts having relative motion – wear rings, for
example. Perform detail inspection as follows:
a. Check O-rings and bearing cover gaskets for cracks,
nicks or tears; packing rings for excessive compression,
fraying or shredding, embedded particles (dirt or metal).
Replace if defective in any way.
b. Mount the shaft between centers or on vee blocks.
Check for eccentricity throughout entire length with a
dial indicator; eccentricity must not exceed 0.003 inch
total indicator reading. Check that threads are clean and
sharp. Surfaces on which bearings mount must be
smooth, have a finish of 32 microinches or better, and
the shoulders square and free from nicks.
c. Measure the OD of the impeller wear surface or
impeller ring (8) and the ID of the casing ring (7).
Compute the diametrical clearance (ID minus OD) and
compare with the limits given in Table I. If measured
diametrical clearance exceeds two times values in Table
I, repair to restore design clearance is recommended. ID
surface of casing ring must be smooth and concentric
with ring OD.
d. Examine impeller passages for cracks, dents, gouges
or embedded material.
4851938
Blow dry with clean dry compressed air.
Peerless Pump does not recommend reuse of ball bearings
after removal from the shaft. If you choose to clean and
consider reuse, proceed as follows:
b. To clean ball bearings, remove bearings from housings.
c. Place bearings in wire basket so there is space for
cleaner to reach all parts.
d. Immerse in Stoddard solvent. Agitate basket until
grease is thoroughly loosened and can be flushed out.
e. Place bearings on a screened surface.
f. Using a spray gun with air filter and clean Stoddard
solvent, flush each bearing until all grease and sludge is
removed.
g. Blow solvent out of bearings with dry filtered air.
h. Lubricate bearings immediately after cleaning with
light spindle oil and place them in a covered container.
i. Do not spin bearings during cleaning.
1-5. REMOVAL OR REPLACEMENT. Refer to the Dis-
assembly Instructions for disassembly to the point of
removing bearings from the shaft. Normally, they should
be removed only to clean and inspect after operating
trouble is traced to the bearings.
2-2. REPAIR. Make needed repairs in the following
manner:
a. If ID of casing rings (7) is grooved, scored or
eccentric, replace the casing rings.
b. If impeller wear surfaces or impeller rings (8) are
defective, the impeller must be machined to install new
impeller rings. Be sure machining is concentric with
impeller bore. Use care NOT to reduce hub OD when
machining off old impeller rings.
TABLE I
IMPELLER/CASE WEAR RING
DIAMETRICAL CLEARANCE
.015/.019 .018/.022
2AE11 3AE9 3AE14
10AE16
4AE10 4AE11 4AE12
5AE8 5AE11 5AE12
5AE14 6AE10
6AE11 6AE12 6AE14
6AE16 6AE18 8AE12
8AE13 8AE15 8AE17
8AE20 10AE12
10AE14 10AE20
4
NOTE
5
Clearances in Table I are for standard bronze or cast
iron fitted pumps. For materials with a tendency to gall,
such as stainless steel, increase clearances by .010 inch.
NOTE
For bronze impellers and rings, the rings are shrunk on
the hub according to standard fit FN-4 of ANSI B4.1.
Hardened impeller rings are installed according to ANSI
B4.1 standard fit FN-1.
c. Install new impeller rings (8) on the impeller (shrink or
press depending on material). The impeller ring ID is
factory-machined for proper fit.
NOTE
Standard pump s are furnished without impeller rings; the
wear surface is an integral part of the impeller. Impeller
wear rings may be field-installed by machining. Refer to
note following paragraph 2-2b for standard fits to be
produced when making such repair. Replace impellers
which cannot be salvaged by such repair.
d. Replace worn shaft sleeves.
TABLE II
TORQUE VALUE (FT.-LB.)*
SIZE
INCH
MEDIUM CARBON
STEEL
SAE J429 GRADE 5
105-120,000 PSI
TENSILE
MEDIUM CARBON
ALLOY STEEL
SAE J429 GRADE 8
150,000 PSI
TENSILE
1/4 7-8 8-9
3/8 23-25 32-34
1/2 59-62 76-83
5/8 120-125 151-166
3/4 210-225 268-295
7/8 305-325 433-477
1 421-465 648-715
HEAD
SYMBOLS
e. Straighten or replace shafts having excessive run-out
(eccentricity). See paragraph 2-1b.
3-1. ROTATING ELEMENT. (See Figure 1) Reassemble
as follows:
a. Coat the shaft (6) lightly with oil.
b. Place impeller key (32) in shaft keyway.
c. Align impeller (2) on shaft and install with an arbor
press or brass tubular sleeve and hammer. Guard
against bending shaft. When assembled, the impeller
vanes must rotate in the proper direction. (See Figure 3),
and impeller hub must be centered on shaft journal.
*TORQUE VALUES SHOWN ARE FOR CLEAN
LUBRICATED THREADS; AND GASEKTED
JOINTS.
g. Place inboard deflectors (40A) on shaft.
h. If previously removed, install bearing housing seals
(169) into housings (31 & 33).
i. Press housing-bearing-seal assemblies on shaft to
seat bearings against shaft shoulders.
j. Install bearing retaining ring (18A) in groove against the
outboard bearing.
k. Install gaskets (73B) on bearing covers. Use factory
supplied parts or cut replacement gaskets from 1/16 inch
No. 444 Vellumoid. (SAE P3415A). EXCEPTION: For
all models using 3306 size outboard bearing, gasket 73B
is 1/32 thick.
l. Attach inboard and outboard bearing covers (35, 37).
In the assembled position, the grease drain tap must be
located at bottom in a horizontal plane.
m. Install outboard deflector (40B), and coupling key
(46); assemble coupling half on the shaft and tighten the
setscrews.
FIGURE 3. VANE POSITION FOR PROPER ROTATION
d. Coat shaft sleeve O-rings (14B) with oil and install in
shaft sleeves (14 & 14A). Install shaft sleeve set screws
in shaft sleeves. Assemble shaft sleeves to the shaft and
hand tighten against the impeller. Do not tighten shaft
sleeve set screws.
e. Install the stuffing box bushings (63).
f. Locate casing rings (7) on impeller.
3-2. PUMP. Complete the assembly of pump as follows:
a. Use factory supplied casing gasket (73A) or use the
upper casing (1B) as a template to cut a casing gasket
(73A) from 1/64 inch Vellumoid (SAE P3313B). It is very
important that specified material and thickness be used
for casing gasket. Machined surfaces of both casings
must be perfectly clean and free from burrs or nicks.
4851938
b. Affix the new casing gasket to lower casing (1A) with
shellac.
c. Use slings around the shaft near bearings to set rotating
element into lower casing. Position the casing rings (7) and
both bearing housings so that all dowel pins engage in slots
in the lower case split surface.
d. Assemble both bearing caps per match marks and
tighten the cap screws.
e. Adjust the shaft sleeves (14 & 14A) to center the
impeller in the lower casing volute, and tighten both shaft
sleeves with a spanner wrench, then tighten shaft sleeve
set screws to 130 inch-pounds torque.
f. Cover the top side of the casing gasket with a mixture of
graphite and oil. Install the gland bolts (17B). Carefully
locate the upper casing on the lower, making certain the
dowel pins engage. Install cap screws and tighten working
from the center of the casing to each end, to the torque
values in Table II. If any cap screws require replacement,
use only parts with equal or greater tensile strength. See
Table II. Rotate shaft by hand to check that it turns freely.
g. Push the stuffing box bushings (63) to the rear of the
stuffing boxes. Insert two packing rings, lantern ring (29) if
provided, and three packing rings. Insert each ring
separately and stagger the joints of successive rings 90d.
Insert the packing glands (17) and set the gland bolt nuts
finger tight – DO NOT USE A WRENCH.
h. Rotate shaft by hand to check that it turns freely.
i. Replace all drain plugs if removed during disassembly.
j. Re-lubricate the bearings. Refer to Table IV.
It is most important to provide proper lubrication and
keep bearings clean. Frequency of lubrication must be
determined by experience, as it depends upon bearing size,
speed, operating conditions and environment. Table III
should be used only as a guide for re-lubrication.
TABLE III
GREASING FREQUENCY
(See Table IV for amounts)
SERVICE GREASE EACH
Normal, 8-hour day operation.
Room free of dust and damaging
atmosphere.
Severe, 24-hour day operation.
Room with moderate dust
and/or damaging atmosphere,
or outdoor service.
Light, approximately 10-hour
week. Room relatively free of
dust and damaging atmosphere.
6 Months
1 Month
1 Year
4851938
TABLE IV
AMOUNT OF GREASE FOR BALL BEARINGS
OUNCES GRAMS BEARING SIZE
1 28 206/ 305
2 56 207/ 306
2 ¼ 63 208/ 307
2 ½ 70 210/ 308
3 ½ 100 212/ 310
4 ½ 128 213/ 311
GREASE SPECIFICATION:
Use Lithium soap base, worked penetration, meeting
NLGI Grade 2 specifications. Minimum dropping point
355dF., operating temperature range of –10dF to 240dF.
Obtain grease from your local supplier.
k. Oil. (Pumps are shipped without oil in the bearing
hoisings.) Be sure to fill and adjust constant level oilers
before initial start of pump.
(1) Adjust dust cap to lowest possible position on base
fittings.
(2) The pipe nipple and base fitting must be level; check
with spirit level. If pipe nipple is bent, replace it. A
constant level oiler that is not level will not provide
proper lubrication to the bearings.
(3) Fill bottle, screw it into the dust cap as far as it will
go – do not force. Allow the oil to flow into the bearing
housing. Repeat this procedure until there remains a
supply of oil in the bottle. Never fill bearing housing
through base fitting.
(4) Check the breather tube for cleanliness. The breather tube must be used with the oil lubrication system.
(5) The bottle on the constant level oilers is mad of
plastic, and it will be damaged by oil temperature over
170dF or solvents such as alcohol. For these conditions,
use a glass bottle.
LUBRICATING INSTRUCTIONS
1. The pump is shipped without oil in the bearing housings.
2. Change first oil after operating 1000 hours or 60 days,
whichever occurs sooner.
3. Frequency of oil change thereafter is dictated by service
conditions. It is suggested, however, that oil changes occur at
least every 3000 hours of operation.
4. In order to keep the bearing housings vented, the breather
tubes and filters must be kept clean.
Type:
High quality non-detergent straight H.V.I. mineral oil
Weight:
Brg. Operating Range (dF) Weight
0 – 150 150 SSU at 100dF
150 – 200* 300 SSU at 100dF
200 – 250* 500 SSU at 100dF
*Maximum oil temperature in plastic oiler bottle 170dF
Lubricating Oils
l. Consult the driver manufacturer’s
Maintenance instruct-
toins for lubricants and re-lubrication procedure for the
driver bearings.
6
3-3. TROUBLES. To reliably establish the performance of either the pump or driver, instruments such as tachometers, pressure
gauges and electric meters must be in proper working condition and preferable of recent calibration. In many cases, much time
and expense have been expended with faulty instruments. Table VI lists a number of troubles commonly occurring. If unable to
determine the cause, and remedy the trouble for this list, refer the problem to the Peerless Pump representative.
TABLE VI
TROUBLES
Overload on driver Pump speed high.
Pump vibrates or is noisy Driver unbalanced.
Failure to deliver liquid or sufficient
pressure.
Pump loses prime after starting Air leaks in suction line.
Total head lower than rating.
Tight packing.
Liquid is of higher specific gravity or
Viscosity than rating.
Mechanical trouble of pump or driver
Misalignment
Cracked foundation.
Worn ball bearings.
Pump not primed.
Pump not up to speed.
Discharge head too high.
Insufficient available NPSH.
Incorrect direction of rotation.
Air leaks in suction line or through stuffing boxes.
Impeller passages restricted.
Worn wearing rings.
Damaged impeller.
Foot valve too small or restricted by dirt.
Insufficient available NPSH.
** Always obtain new trim diameter from Peerless representative.
4851938
TROUBLE PROBABLE CUASE REMEDY
Motor voltage higher than name plate rating
will cause the motor to run faster. Either
reduce motor voltage or trim impeller
diameter. On other drives, reduce speed if
possible. If speed reduction not realized,
trim impeller diameter.**
Check suction and discharge pressures an d
determine the total dynamic head. If TDH
lower than ratings, throttle discharge to rated
TDH or, if this is not possible, reduce
impeller diameter.**
Stop pump – following proper repacking procedure. Check for scored sleeve; and for sleeve
run-out if packing wears rapidly. Replace
sleeve and packing as required.
Check with Peerless distributor to determine
if a larger motor is required.
See if pump and motor turn freely. Check
impeller fit, shaft straightness and ball
bearings.
Disconnect driver and operate it alone. Check
pump for large pieces of debris, such as wood,
rags, etc.
Realign pumping unit.
Replace foundation.
Replace bearings. Check lubricants for proper
grade. Check pump alignment. Check for
condensation on water cooled bearings.
Re-prime.
Check for low motor voltage or motor over-
load. Other drives, increase driver speed
when possible.
Check to see that all discharge valves are
opened and the discharge line is free from
obstructions. In some cases, the installation
has to be altered or a pump of suitable rating
must be provided.
Check NPSH requirements of pump and
increase system NPSH accordingly.
Check the impeller assembly for correct rotation either by removing upper case or through
priming connection. Check rotation of driver.
Tighten packing. Check for air leaks between
sleeve and shaft and replace O-ring if there is
an air leak. Check all suction line joints
for bad gaskets and loose joints.
Disassemble the pump and clean impeller.
Replace worn parts.
Replace or repair impelle r.
Replace with adequate size foot valve or clean foot
valve.
Tighten packing. Check for air leaks between
sleeve and shaft and replace O-ring if there
is an air leak. Check all suction line joints
for bad gaskets and loose joints.
Check NPSH requirements of the pump and
increase the system available NPSH
accordingly.
7
SPARE PARTS. To keep delays to a minimum when
pump repairs are required, we suggest that the following
spare parts be stocked:
(a) One set of bearings (16) & (18), bearings seals (47)
& (169), and bearing cover gaskets (73B).
(b) One set of shaft sleeves (14) & (14A) and sleeve O rings (14B).
(c) One set of casing rings (7).
(d) One se of impeller rings (8).
(e) One casing gasket (73A).
For installations where downtime is critical, a complete
rotating element should be stocked.
(f) One set of packing rings (13).
obtained from your local supplier.
For installations where downtime is critical, a complete
rotating element should be stocked.
NOTICE: Materials of construction, specification, dimensions, design features, and application information, where
shown in this bulletin, are subject to change and/or modification without notice by Peerless Pump at their option.
Packing can be
To obtain quick and accurate service when ordering
spare parts, provide the following information:
(A) Pump size and type as noted on nameplate.
(B) Pump serial number as noted on nameplate.
(C) The name and number of the parts as shown on the
sectional drawings.
(D) Quantity required of each item.
Aid may be obtained from the Peerless Pump representative or an authorized distributor for planning an
adequate supply of spare parts.
Peerless Pump Company
P.O. Box 7026 – Indianapolis, IN 46207-7026
Phone: (317) 925-9661 – Fax: (317) 924-7388
BULLETIN NO. 4851938 8 Printed in U.S.A.
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