Wilfley DRYLOCK II A7 RETROFIT Owner's manual

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A2551 rev B
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7350 E. Progress Place • Englewood, CO USA 80111 • Toll Free: 800.525.9930 • Phone: [phone] • Fax: [phone]
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TABLE OF CONTENTS
FOREWORD ..................................................................................................................................................... 1
1.0 INTRODUCTION......................................................................................................................................... 2
2.0 SAFETY CONSIDERATIONS..................................................................................................................... 2
2.1 SAFETY TIPS.............................................................................................................................................. 3
Apparel...................................................................................................................................................... 3
Maintenance.............................................................................................................................................. 3
3.0 A7 WITH DRYLOCK II™ SEAL DISASSEMBLY & REASSEMBLY ........................................................... 4
3.1 DISASSEMBLY............................................................................................................................................ 5
3.2 CLEANING/INSPECTION............................................................................................................................ 5
3.3 DRYLOCK II™ ASSEMBLY......................................................................................................................... 8
DryLock II™ Seal Clearance Adjustment Procedures..............................Error! Bookmark not defined.
Impeller Clearance.................................................................................................................................. 16
Standard A7 Pump.................................................................................................................................. 16
Dial Indicator Procedures........................................................................................................................ 16
Feeler Gauge Procedures....................................................................................................................... 16
4.0 ORDERING PARTS .................................................................................................................................. 19
5.0 SPECIAL SERVICE................................................................................................................................... 19
FIGURES
Figure 1 - A7 PUMP............................................................................................................................................4
Figure 2 - DryLock II™ Style A1 For A7 Pump...................................................................................................6
Figure 3 - DryLock II™ Style A2 For A7 Pump...................................................................................................7
Figure 4 – A7 DryLock II™ Ball Assembly..........................................................................................................8
Figure 5 – A7 Rotating DryLock II™ Assembly Step 1.......................................................................................9
Figure 6 – A7 Rotating DryLock II™ Assembly, Step 2....................................................................................10
Figure 7 – A7 Stationary DryLock II™ Assembly Step 1..................................................................................11
Figure 8 – A7 Stationary DryLock II™ Assembly Step 2 – Varilip Configuration.............................................12
Figure 9 – A7 Stationary DryLock II™ Assembly Step 2 – Wiper Seal Configuration......................................12
Figure 10 – A7 Complete DryLock II™ Assembly............................................................................................13
Figure 11 – A7 Complete Pump Assembly.......................................................................................................14
Figure 12 – Flush Configuration .......................................................................................................................15
Figure 13 – Dial Indicator Method (Preferred Method).....................................................................................16
Figure 14 – Feeler Gauge Method ...................................................................................................................16
Figure 15 – Shaft Wrench Drawing ..................................................................................................................20
TABLES
Table 1 – Casing and Impeller Clearances ......................................................................................................16
Table 2 – A7 Nominal Shaft Diameters............................................................................................................20
Table 3 – A7 Bolt Torque Values......................................................................................................................21

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FOREWORD
This manual provides instructions for the installation, operation, maintenance and storage of the Wilfley
Model A7 ANSI Standard Pump. This manual covers the standard product plus common options that are
available. For special options, supplemental instructions are supplied. This manual must be read and
understood before installation and start-up.
The design, materials and workmanship incorporated in the construction of Wilfley pumps makes them
capable of giving trouble-free service if properly applied and maintained. The life and satisfactory service of
any mechanical unit is enhanced and extended by correct application, proper installation, periodic inspection,
condition monitoring and careful maintenance. This instruction manual was prepared to assist operators in
understanding the construction and the correct methods of installing, operating, maintaining and storing
these pumps.
A.R. Wilfley and Sons, Inc. shall not be liable for damage or delays caused by a failure to observe
the instructions for installation, operation, maintenance and storage that are contained in this
manual.
Warranty is valid only when genuine Wilfley parts are used. Contact your local Wilfley
representative for basic warranty information and before making any changes.
Use of the equipment on a service other than stated in the order could nullify the warranty, unless written
approval is obtained in advance from A.R. Wilfley and Sons, Inc.
To assure proper installation, supervision from an authorized manufacturer’s representative is
recommended.
Additional manuals can be obtained by contacting your local Wilfley representative.
THIS MANUAL EXPLAINS
•Proper Installation
•Ordering Spares or Repair Parts

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1.0 INTRODUCTION
This manual contains instructions and guidelines
for the installation, operation, maintenance and
storage of the Wilfley A7 ANSI Standard Pump.
There are many factors affecting the successful
installation, operation and maintenance of a
pump. From one pump to the next there is
typically significant variation in these factors. This
makes it impossible to create a bulletin that
covers all situations.
Therefore, the information contained herein is
meant to serve only as a general guideline. If
detailed questions or problems arise, contact the
Wilfley Sales Office or authorized
Distributor/Representative.
It is extremely important that this entire
manual be read prior to installation or start-up
of the pump.
This is important for safety, for proper
performance of the pump and for maximum Mean
Time between Planned Maintenance (MTBPM).
2.0 SAFETY CONSIDERATIONS
Like all machinery, centrifugal pumps can be
dangerous if used improperly. Any of the following
misuses may result in a pump that does not
function properly. A pump that does not function
properly may be a hazard and could cause
damage or injury.
For maximum safety and reliability, use only
factory-supplied parts and closely follow all
maintenance and operating recommendations and
instructions.
Do not change the pumping conditions or
installations of a Wilfley pump without consulting
A.R. Wilfley and Sons, Inc. first to ascertain if the
pump is capable of handling the new conditions
and/or fluid. It is not possible to list all the
conceivable misuses. Therefore, the following list
is not meant to be complete and is provided only
as a guide of the types of misuse that can
damage a pump and cause injury. The list will
also give a good idea of the kinds of misuses that
will void any and all warranties.
1. Do not run a pump with the discharge valve
closed or below minimum rated flow.
2. Do not run a pump in the reverse direction.
3. Do not start a pump that is “wind-milling” in
the reserve direction due to fluid flowing
back down the discharge pipe.
4. Do not continue to operate a pump when
there are indications that something is
rubbing, binding or knocking.
5. Do not continue to run a pump that gives an
indication of overheating.
6. Do not operate a pump with the coupling
guard removed. Make sure the guard fits
snugly around the coupling so there are no
openings.
7. Do not operate a pump that is excessively
vibrating, surging or making abnormal
noise.
8. Do not work on a pump unless the drive
system is locked out and the pump is
disconnected from the drive system.
9. Do not connect the pump to the drive
system without first checking to see that the
drive system is running in the correct
direction.
10. Do not rely on the factory’s alignment of the
pump and the drive system. Alignment may
have changed during shipment.
11. Do not put a cold liquid in or on a hot pump
or a hot liquid in or on a cold pump.
12. Do not hit a pump with any object.
13. Do not use worn or faulty parts.
14. Do not stick hands, arms, legs or any other
object into the discharge, suction or any
other opening of a pump.
15. Do not weld attachments to the pump.
16. Do not apply external heat to the pump.
17. Do not lift the pump by its case only.
18. Do not examine a pump without using
proper eye and face protection.
19. Do not run equipment dry or start the pump
without the proper prime (Casing Flooded).
20. Do not exceed the maximum allowable
pressure (“Max. P. @ 38°C” as shown on
pump nameplate).

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The Wilfley A7 process pump has been designed
and manufactured for safe operation. In order to
ensure safe operation, it is very important that this
manual be read in its entirety prior to installing or
operating the pump. Wilfley shall not be liable for
physical injury, damage or delays caused by a
failure to observe the instructions for installation,
operation and maintenance contained in this
manual.
Remember that every pump has the potential to
be dangerous, because of the following factors:
•Parts are rotating at high speeds.
•High pressures may be present.
•High temperatures may be present.
•Highly corrosive and/or toxic chemicals may
be present.
Paying constant attention to safety is always
extremely important. However, there are often
situations that require special attention. These
situations are indicated throughout this book by
the following symbols:
DANGER – Immediate hazards that WILL result in
severe personal injury or death.
WARNING – Hazards or unsafe practices that
COULD result in severe personal injury or death.
CAUTION - Hazards or unsafe practices that
COULD result in minor personal injury or product
or property damage.
NOTE: ALWAYS COORDINATE REPAIR
ACTIVITY WITH OPERATIONS PERSONNEL
AND FOLLOW ALL PLANT SAFETY
REQUIREMENTS AND APPLICABLE SAFETY
AND HEALTH LAWS/REGULATIONS.
2.1 SAFETY TIPS
Apparel
•Insulated work gloves when handling hot
bearings or using bearing heater
•Heavy work gloves when handling parts
with sharp edges, especially impellers
•Safety glasses (with side shields) for eye
protection, especially in machine shop
areas
•Steel-toed shoes for protection when
handling parts, heavy tools, etc.
•Other personal protective equipment to
protect against hazardous/toxic fluids
Maintenance
•Always lockout/tagout power.
•Ensure pump is isolated from system and
pressure is relieved before disassembling
pump, removing plugs, or disconnecting
piping.
•Use proper lifting and supporting equipment
to prevent serious injury.
•Observe proper decontamination
procedures.
•Know and follow company safety
regulations.
•Never apply heat to remove impeller.
•Observe all cautions and warnings
highlighted in pump instruction manual.
DANGER
!
WARNING
!
CAUTION
!

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3.0 A7 WITH DRYLOCK II™ SEAL DISASSEMBLY & REASSEMBLY
The following sections of this manual give instructions on how to perform a complete seal retrofit on the A7
Pump from a DryLock® I to a DryLock II™.
Refer to Figures 1 through 11 for item number references used throughout this section.
Note: The pictures in the following section represent typical parts to clarify assembly. Details of the parts may
differ slightly from parts supplied with the pump.
ITEM NO. QTY. DESCRIPTION ITEM NO. QTY. DESCRIPTION
1 1 CASING 61N 5 CAP SCREW
1A 8
1
CAP SCREW 62 1 SHAFT
3* 1 CASE GASKET 62A* 1 BEARING, INBOARD
14 1 IMPELLER 62B* 1 BEARING, OUTBAORD
15 1 CASEPLATE 62C* 1 LOCKNUT
61 1 BEARING FRAME 67* 1 OIL SEAL, BEARING
61A 1 OIL FILL PLUG 72 1 BEARING CARRIER
61B 1 OIL DRAIN MAGNETIC PLUG 72A* 1 O-RING, BEARING CARRIER
61D 1 FRAME BRACKET 72B 3 JAM NUT
61E 1 FRAME FOOT 73 1 RETAINING RING
61H 3 CAP SCREW 75 6 CAP SCREW
61J 1 INBOARD BEARING COVER 76* 1 OIL SEAL, OUTBOARD
61K* 1 INBOARD BEARING COVER GASKET 79 2 OIL SIGHT GLASS
61M 3 CAP SCREW
Notes:
* Recommended spare parts
1Frame 3 has qty. 12 cap screws
Figure 1 - A7 PUMP
11A 61D 61N 61M 61 61A 73 62B*
75
62C*
76*
62
75
72B
72
62A* 61B 79 61E 61H 72A*
67* 61J 61K* 3*
14
SEE DRYLOCK II™
SEALASSEMBLY
17
15

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3.1 DISASSEMBLY
1. Before performing any maintenance,
disconnect the driver from its power supply
and lock it off line.
Lock out power to driver to prevent personal
injury.
2. Close the discharge and suction valves and
drain all liquid from the pump.
3. Close all valves on auxiliary equipment and
piping, then disconnect all piping.
4. Decontaminate the pump as necessary.
If Wilfley pumps contain dangerous
chemicals, it is important to follow plant
safety guidelines to avoid personal injury or
death.
5. Remove the coupling guard.
6. Remove the spacer from the coupling.
7. Disconnect any seal drain piping.
8. Remove the fasteners holding the bearing
frame (61E) and case (1) to the baseplate.
Remove pump and relocate to a
workstation.
It is important to follow plant safety
guidelines when lifting pump components.
9. Remove the fasteners (1A) holding the
casing to the bearing frame and remove
casing (1).
10. Mount a shaft key and a shaft wrench to the
end of the shaft (62). With the wrench
handle pointing to the left when viewed from
the impeller end, grasp the impeller firmly
with both hands (wear heavy gloves) and
then rotate it until the wrench handle is at
the 11 o’clock position; next, spin the
impeller quickly in a counterclockwise
direction so that the wrench end makes a
sudden impact with a hard surface. After
several sharp raps, the impeller should be
loose. The shaft wrench can be fabricated
locally, per the shaft wrench drawing (see p.
19).
11. Unscrew the impeller and remove it from the
shaft.
Do not apply heat to the impeller. An
explosion could occur.
12. Remove the case plate (15) and the
expeller (17). Next, remove the large o-ring
(30A) found between the plate and the seal
housing (30), then remove the complete
seal housing assembly.
Further disassembly is not required unless the
power end needs maintenance. See pump IOM
manual for instructions.
3.2 CLEANING/INSPECTION
All parts should now be thoroughly cleaned and
inspected. New bearings, o-rings, gaskets and oil
seals should be used. Any parts that show wear
or corrosion should be replaced with OEM Wilfley
parts.
Casing
•Thoroughly clean gasket surfaces and
alignment fits to remove rust and debris.
•Inspect for any unusual erosive wear in
volute.
Impeller/Expeller
•Inspect leading and trailing edges of vanes
for pitting, erosion or corrosion damage.
Frame
•Inspect frame, bracket and frame foot for
cracks.
•Inspect for corrosion or pitting if frame has
been exposed to pumpage.
•Inspect shafts and sleeves for wear.
It is important that only nonflammable,
noncontaminated cleaning fluids are used. These
fluids must comply with plant safety and
environmental guidelines.
DANGER
!
DANGER
!
CAUTION
!
DANGER
!
W
A
RNING
!

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ITEM
NO. QTY. DESCRIPTION
15 1 CASE PLATE
17 1 EXPELLER
18* 1 O-RING, SHAFT SLEEVE
19* 1 O-RING, EXPELLER
20* 1 O-RING, SHAFT
23* 1 STATIONARY SEAL RING
24 1 SEAL SLEEVE
24A* 1 O-RING, SEAL SLEEVE
24B* 1 SLIDE RING
24C 4 DRIVE SCREW
24D 4 DRIVE SCREW SLEEVE
24F 1 LOCKNUT
24G 1 ROTARY SEAL RING
24H* 1 O-RING, ROTARY SEAL
26 1 SEAL CARTRIDGE
26H 1 DISASTER BUSHING
26J* 1 O-RING, CARTRIDGE
29 1 DRAIN SPOUT
30 1 SEAL HOUSING
30A* 1 O-RING, SEAL HOUSING
30B* 1 O-RING, STAT RING
30M** 1 QUICK RELEASE PIN
30S** 1 POSI-LOCK PIN
30T** 1 POSI-LOCK BOLT
31A* 1 VARILIP
34 1 BALL HOUSING
34A 1 RETAINING RING
34B 1 SPRING PIN
34C 1 KEY
39 1 SHAFT SLEEVE
39A 1 RETAINING RING
40 1 BALL RETAINER
40A 3-18 BALLS
42 1 WAVE SPRING
43 1 ACTUATOR PLATE
* Recommended spare parts
** Seal will be fitted with Quick Release Pin
OR Posi-Lock Pin
Figure 2 - DryLock II™ Style A1 For A7 Pump
EXPELLER FLUSH
P
O
RT NOT VISIBLE
EXPELLER DRAIN
FOR FRAME 1
EXPELLER DRAIN FOR
FRAMES 2, 3, & 4
30M**
43
26H
24B*
34B
39A
24C
34A
30A* 30
26
20*
34
40A
40
24D
24C
39
26J*
30B*
23*
24A*
42
19*
18*
24
31A*
24H*
24F
24G
17
15
30s** 30t**
29

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ITEM
NO. QTY. DESCRIPTION
15 1 CASE PLATE
17 1 EXPELLER
18* 1 O-RING, SHAFT SLEEVE
19* 1 O-RING, EXPELLER
20* 1 O-RING, SHAFT
23* 1 STATIONARY SEAL RING
24 1 SEAL SLEEVE
24A* 1 O-RING, SEAL SLEEVE
24B* 1 SLIDE RING
24C 4 DRIVE SCREW
24D 4 DRIVE SCREW SLEEVE
24F 1 LOCKNUT
24G 1 ROTARY SEAL RING
24H* 1 O-RING, ROTARY SEAL
26 1 SEAL CARTRIDGE
26H 1 DISASTER BUSHING
26J* 1 O-RING, CARTRIDGE
29 1 DRAIN SPOUT
30 1 SEAL HOUSING
30A* 1 O-RING, SEAL HOUSING
30B* 1 O-RING, STAT RING
30M** 1 QUICK RELEASE PIN
30S** 1 POSI-LOCK PIN
30T** 1 POSI-LOCK BOLT
31A* 1 WIPER SEAL
34 1 BALL HOUSING
34A 1 RETAINING RING
34B 1 SPRING PIN
34C 1 KEY
39 1 SHAFT SLEEVE
39A 1 RETAINING RING
40 1 BALL RETAINER
40A 3-18 BALLS
42 1 WAVE SPRING
43 1 ACTUATOR PLATE
* Recommended spare parts
** Seal will be fitted with Quick Release Pin
OR Posi-Lock Pin
Figure 3 - DryLock II™ Style A2 For A7 Pump
EXPELLER FLUSH
P
O
RT NOT VISIBLE
EXPELLER DRAIN
FOR FRAME 1
EXPELLER DRAIN FOR
FRAMES 2, 3, & 4
30M**
43
26H
24B*
34B
39A
24C
34A
30A* 30
26
20*
34
40A
40
24D
24C
39
26J*
30B*
23*
24A*
42
19*
18*
24
31A*
24H*
24F
24G
17
15
30s** 30t**
29

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3.3 DRYLOCK II™ ASSEMBLY
Assembly videos are available online at www.wilfley.com/support/instruction-videos.html or you can scan the
QR codes below with your smartphone:
DryLock II™ A1 Seal Assembly DryLock II™ A2 Seal Assembly
Figure 4 – A7 DryLock II™ Ball Assembly
FRAME
NO. 950 RPM 1150 RPM 1450 RPM 1750 RPM 2950 RPM 3550 RPM
1 18 12 9 6 3 3
2 18 12 9 6 3 3
3 18 12 9 6 3 3
4 18 12 9 6 - -
Figure 4A – Number of DryLock II™ Actuator Balls per Pump RPM
1. Insert spring pin (34B) into ball housing (34). Place balls (40A) into the ball retainer (40) slots. For
smooth operation, the balls must be symmetrically placed. Please note the small hole on the face of
the ball retainer. This hole will fit over the spring pin. Be sure the spring pin fits into the hole of the ball
34A
34B
40
40A
34 34C

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retainer. Then align ball retainer into ball housing (34). Lock into place with retaining ring (34A) to the
hub of the ball housing. Lastly, insert key (34C) onto ball housing.
Figure 5 – A7 Rotating DryLock II™ Assembly Step 1
2. Slide o-ring (24H) over seal sleeve (24). Make sure it is in the groove after the threads. Slide rotary
seal ring (24G) over o-ring then tighten with lock nut (24F). Insert slide ring (24B) into seal sleeve.
**NOTE: Lock nut (24F) has left hand threads**
24F
24G
24H
24B 24
APPLY TEFLON
®
LUBRICATION
TO THREADS

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Figure 6 – A7 Rotating DryLock II™ Assembly, Step 2
3. Slide wave spring (42) over shaft sleeve (39). Place o-ring (24A) into groove in the shaft sleeve.
Lubricate o-ring and then carefully insert into the completed assembly from the previous step. Take
care when pushing the shaft sleeve past the slide ring (24B). Try to center the keyway directly between
the tapped holes in the assembly created in Step 1. Then install o-ring (20) into the groove in the shaft
sleeve (39).
20 42
39
24A
COMPLETED
ASSEMBLY FROM
PREVIOUS STEP

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Figure 7 – A7 Stationary DryLock II™ Assembly Step 1
4. Press disaster bushing (26H) into cartridge seal (26). Insert o-ring (30B) and lubricate prior to inserting
the stationary seal ring (23) into cartridge seal. When installing the stationary seal ring, make sure that
the tabs in the part align with the slots in the seal cartridge (26). Insert o-ring (26J) into the groove in
the seal cartridge. Carefully inspect the stationary seal ring (23) to insure that it has seated fully before
installation. The inside surface of the seal ring is the stationary seal face and must be free of scratches
or nicks.
23
30B
26H
26J
26

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Figure 8 – A7 Stationary DryLock II™ Assembly Step 2 – Varilip Configuration
5. VARILIP CONFIGURATION: Press the Varilip seal (31A) into the seal housing (30) with the lip facing
toward the suction of the pump.
Figure 9 – A7 Stationary DryLock II™ Assembly Step 2 – Wiper Seal Configuration
WIPER SEAL CONFIGURATION: Insert the Wiper Seal (31A) into the seal housing (30). Bend the
seal into a crescent moon shape in order to fit it into the angled groove. Make sure that the seal is
completely inserted in the groove before continuing.
30
31A
30
31A

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Figure 10 – A7 Complete DryLock II™ Assembly
6. Insert Rotating Assembly Step 2 into Stationary Assembly Step 2. Apply Teflon paste generously to
threads of Stationary Assembly Step 1 and lubricate o-ring before threading into Stationary Assembly
Step 2. **Do not overtighten – Leave 1 visible thread.** Tighten actuator plate (43) with flat cap screws
(24C) and drive screw sleeves (24D). It is recommended that “blue Loctite” be applied to the cap
screws (24C) to ensure they do not unscrew during operation. Recheck that the keyway in the shaft
sleeve is directly between the flat cap screws. Insert the key (34) into the keyway in the shaft sleeve.
Slide the Ball Housing Assembly over the Rotating Assembly created in Step 1 and lock it with
retaining ring (39A). Adjustment may be needed to make sure that the cap screws, key and ball
housing assembly fit correctly.
*Note: The complete DryLock II™ Assembly can be purchased fully assembled and ready to install.*
COMPLETED ROTATING
ASSEMBLY STEP 2
34
COMPLETED
BALL HOUSING
ASSEMBLY
39A
24C 24D 43
COMPLETED STATIONARY
ASSEMBLY STEP 1
COMPLETED STATIONARY
ASSEMBLY STEP 2

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Figure 11 – A7 Complete Pump Assembly
7. Lubricate o-ring (20). Install the DryLock II™ Assembly to the power end. The seal flush should be at
the 12 o’clock position and the drain at the 6 o’clock position. A drain nipple (29) may have been
supplied with the DryLock®II seal. The nipple can be screwed in to the drain port after pump assembly,
use Teflon tape on the threads.
COMPLETE
DRYLOCK II™
SEALASSEMBLY
29
1
14 3
1A
19 15 30A 17 18

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DIM A.
FRAME 1 30°
FRAME 2 50°
FRAME 3 15°
FRAME 4 20°
Figure 12 – Flush Configuration
8. Seat the seal housing o-ring (30A) and the shaft sleeve o-ring (18) in their grooves.
9. Place the expeller o-ring (19) into the groove on the expeller (17). Place the expeller onto the shaft.
10. Place the case plate (15) onto the DryLock II™ Seal Assembly.
11. Screw the impeller (14) onto the shaft. Be sure the impeller is securely tightened; use of a shaft wrench
is recommended to assist in the tightening process.
12. Install case gasket (3) onto the case plate (15). Use a grease type substance to secure the gasket if it
does not stay in place.
13. Secure the casing (1) to the frame with the supplied bolts (1A).
14. Set the impeller clearances using one of the following methods and set the clearances according to
table 6 below. Wilfley recommends that the dial indicator method be used to set the clearances.
15. Set the DryLock II™ seal clearances using the DryLock II™ Seal Clearance Adjustment Procedures
below.

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Impeller Clearance
Cold temperature clearance (in.) for various
service temperatures
Standard A7 Pump
See table below for clearances between casing
and impeller.
Table 1 – Casing and Impeller Clearances
+/- 0.001” Tolerance
Dial Indicator Procedures
Figure 13 – Dial Indicator Method (Preferred
Method)
1. Set indicator so that button contacts the end
of the shaft (62).
2. Loosen jam nuts (72B) on jacking bolts (75)
and back jack bolts out two turns.
3. Tighten each retaining bolt (75) evenly
drawing the bearing carrier (72) towards the
frame (61) until the impeller (14) contacts
the casing (1). Turn the shaft to ensure
contact is made.
4. Set indicator to zero and back the retaining
bolts out one turn.
5. Tighten the jacking bolts so they evenly
(about one flat at a time) move the bearing
carrier away from the frame until the
indicator shows the clearance for your
pump (see chart).
6. Evenly tighten all jack and retaining bolts so
that they are equally tight. Recheck the dial
indicator to ensure the proper clearance has
been maintained.
7. Check shaft to be sure it turns freely.
Feeler Gauge Procedures
Figure 14 – Feeler Gauge Method
1. Loosen jam nuts (72B) on jacking bolts (75)
and back out approximately two turns.
2. Tighten each retaining bolt (75) evenly,
drawing bearing carrier (72) towards the
frame (61) until the impeller (14) contacts
the casing (1). Turn the shaft (62) to ensure
contact is made.
3. With a feeler gauge, set the gap between
the three sets of bolts and bearing carrier
that corresponds to the proper clearance for
your pump (see Table 1).
4. Evenly back out bearing carrier using the
three jacking bolts until it contacts the
retaining bolts. Evenly tighten jam nuts.
5. Check shaft to be sure it turns freely.
Max.
Service
Temp.
Frame
1 Frame 2 Frame 3 Frame 4
200°F
(93°C) 0.010 0.011 0.013 0.017
250°F
(121°C) 0.012 0.013 0.015 0.019
300°F
(149°C) 0.014 0.015 0.017 0.021
400°F
(204°C) 0.017 0.018 0.020 0.024

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DryLock®II Seal Clearance Adjustment Procedures (Posi-Lock Type)
1. Loosen bolt (30T) so Posi-Lock pin (30S) slides freely, pull pin out of
cartridge slot allowing the cartridge to rotate freely.
2. If not already done, using a 1/2” (Frame 4: 5/8”) open ended wrench,
loosen the seal cartridge (26) until approximately 1 full thread is visible.
3. Set the pump impeller clearances according to the procedures above.
4. Using the open ended wrench, tighten the seal cartridge (26) until you
feel it bottom out solidly.
5. Frame 1 & 2: Using the open ended wrench, loosen the cartridge a total
of 4 tabs. If you are halfway between tabs, loosen the cartridge the half
tab plus 4 additional tabs.
Frame 3 & 4: Using the open ended wrench, loosen the cartridge a total
of 5 tabs. If you are halfway between tabs, loosen the cartridge the half
tab plus 5 additional tabs.
6. Insert the Posi-Lock pin (30S) between the cartridge to prevent rotation of
the cartridge during pump operation.
7. Tighten Posi-lock locking bolt (30T) so that the pin can no longer slide.
1
2
3
4

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DryLock II™ Seal Clearance Adjustment Procedures (Quick Release Pin type)
1. Remove the quick release pin (30M) to allow the cartridge to rotate
freely.
2. If not already done, using a 1/2” (Frame 4: 5/8”) open ended wrench,
loosen the seal cartridge (26) until approximately 1 full thread is visible.
3. Set the pump impeller clearances according to the procedures above.
4. Using the open ended wrench, tighten the seal cartridge (26) until you
feel it bottom out solidly.
5. Frame 1 & 2: Using the open ended wrench, loosen the cartridge a total
of 4 tabs. If you are halfway between tabs, loosen the cartridge the half
tab plus 4 additional tabs.
Frame 3 & 4: Using the open ended wrench, loosen the cartridge a total
of 5 tabs. If you are halfway between tabs, loosen the cartridge the half
tab plus 5 additional tabs.
6. Insert the quick release pin (30M) to prevent rotation of the cartridge
during pump operation.