Alemite 7889-6 User manual

Service Guide 7889-6
7889-B
7889-C
Alemite Corporation
PO Box 473515, Charlotte, North Carolina 28247-3515
www.alemite.com
Copyright © 2003 by Alemite Corporation
This document contains confidential information that is the property of Alemite Corporation
670750 and is not to be copied, used, or disclosed to others without express written permission. Revision (3-03)
SER 7889-6
Figure 1 High-Pressure Pump Model 7889 Series
Description
The major components of the pump models in the
7889 series consist of a reciprocating air motor and a
double-acting pump tube. The pump tube is divorced
from the motor which:
• protects the motor from product contamination
• allows separation without product leakage
The pump tube features a dynamic primer (see Figure
3A) that enables the delivery of a variety of materials,
including lubricants. These high-pressure (40:1) pumps
contain a bung adapter [2 " NPTF (m)] that allows
operation directly from original drums or bulk
containers.*
Models 7889-6, 7889-B and 7889-C
NOTE: Models 7889-6 and 7889-C can be
hoist-mounted. Refer to the Page 2 for details.
Pump models 7889-6 and 7889-C are designed with a
pump tube length to accommodate different size
containers. See Figure 1.
* Model 7889-B is designed for remote installation.
Specifications
Air Motor
Pump Tube
Piston Diameter / Stroke
Air Inlet/Outlet
Max. Air Pressure
Inches Centimeters psi Bars
4-1/4 / 4 10.8 / 10.2 3/4 " NPTF (f) 200 14
For air motor data, refer to Service Guide SER 323440-4
Material
Outlet
Max. Material
Pressure
Delivery/Minute
(Approximate)*
Displacement/
Cycle
psi Bars lb kg gal l ci cc
1/2 " NPTF 8000 552 27 12.3 3.5 13.2 2.45 40.15
* For detailed information, refer to Figure 2
Table 1 7889 Model Series Specifications
High-Pressure Material Pump
Pump
Model
Container Size X Y
lb kg Inches Cm Inches Cm
7889-6 400 180 64-3/8 164 35-1/8 89
7889-B Threaded Primer Body
for Remote Installation 54-3/8 138 25-1/8 64
7889-C 120 -

SER 7889-6 High-Pressure Material Pump
Revision (3-03) 2 Alemite Corporation
Accessories
Hoists
Performance Curves
A pump’s ability to deliver material is based on the pressure (psi/Bars) and quantity
(cfm/lpm) of air supplied to the motor and the amount of material discharge [back] pressure to
be overcome within the system. This chart contains curves based on three different air
pressures. The curves relate delivery in pounds (kilograms) per minute (X axis) to air
consumption in cubic feet (liters) per minute (right Y axis) and to material discharge pressure in
psi/Bars (left Y axis).
Model
Number Air Hose Material
Hose Follower
Cover
Union Muffler
Pound Kilogram
7889-6
317811-5 317882-7
338912 318040-4 338984
321155 324170
322590-4 *
7889-B ---
7889-C 338804 323800-4 **
* This cover contains an inspection/fill port ** Requires Adapter Plate 322593
Table 2 Pump Model 7889 Series Accessories
Hoist Description Pump Hoist Model
Material Follower
Plate Adapter
35-lb 400-lb
Single-Post 7889-6 2741-4, * 2742-4, * 2743-4 - 327242
327247
2742-4, * 2743-4 324610
7889-C
2742-4, * 2743-4 -
Dual-Post 7818-F5 - 327690 **
* Requires Adapter Plate 322593 Requires Adapter (Attaches the Plate to Inlet of Pump) ** Included with Hoist
Table 3 Hoists available for Pump Model 7889 Series
Figure 2 Delivery versus Discharge Pressure and Air Consumption

High-Pressure Material Pump SER 7889-6
Alemite Corporation 3 Revision (3-03)
Item
No. Part No. Description Qty Model Notes Numeric Order Part # (Item #)
1 323842 Bolt, Eye, 3/8 " NPTF (m) 1 11828 (5)
2 323440-A1 Motor Assembly, Air 1 See SER 323440-4 77807 (8)
3 328037 Connector, 3/4 " NPTF (m) 1 172207-4 (7)
4 328031 Coupler, Air, 1/2 " NPTF (f) 1 323440-A1 (2)
5 Screw, 1/2 " -20 x 2 " 4 323842 (1)
6a Tube Assembly, Pump 1 7889-6
See Figure 3-B
328031 (4)
7889-C 328037 (3)
6b Tube Assembly, Pump 1 7889-B 333183-A1 (6a)
7 172207-4 Lockwasher, 1/2 " 4 333183-B1 (6b)
8 Nut, 1/2 " -20 4 333183-C1 (6a)
Legend:
Part numbers left blank (or in italics) are not available separately
Figure 3-A High-Pressure Lubricant and Material Pump Model 7889 Series - Exploded View

SER 7889-6 High-Pressure Material Pump
Revision (3-03) 4 Alemite Corporation
Figure 3-B High-Pressure Lubricant and Material Pump Model 7889 Series - Exploded View

High-Pressure Material Pump SER 7889-6
Alemite Corporation 5 Revision (3-03)
Repair Kits
Part No. Kit Symbol Description
393101-1 Kit, Major Repair
393102-1 Kit, Minor Repair (includes upper and lower Seals in pump tube)
393103-1 Kit, Body Seal (includes Seal in Body)
394077-1 Kit, Lower Seal (includes lower Seal in pump tube)
393530-7 Kit, Seal [includes five (5) of item number 28]
393530-8 Kit, Seal [includes five (5) of item number 43]
393530-12 Kit, Seal [includes five (5) of item number 14]
Item
No. Part No. Description Qty Notes Numeric Order Part # (Item #)
9 Screw, 1/2 " -20 x 1-1/4 " 4 18850 (47)
10 Washer, Lock, Internal Tooth, 0.55 " 4 50666 (35)
11 337436 Screw, Packing 1 131398-1 (45)
12 330481-2 Mounting, Upper 1 131402 (25)
13 Bearing, Upper (Bronze) 1 171032-9 (37)
14 Seal, 0.812 " ID x 1.312 " OD 1 171256 (10)
15 332222 Bearing, Lower (Bronze) 1 171258 (9)
16 Body 1 171700-32 (34)
17 323439 Coupling 2 172190-8 (43)
18 324648 Clip, Spring 4 Qty of 1 in kit 172190-7 (28)
19 332225 Rod, Piston, Upper 1 172190-12 (14)
20 333186 Rod, Piston, Lower, 16.28 " Long 1 Model 7889-6 323439 (17)
333186-A1 Rod, Piston, Lower, 6.28 " Long 1 Model 7889-B & C 323693 (23)
21 333256 Nut, Jam, 2 -16 UN -2B 1 323717 (32)
22 326750-B1 Adapter, Bung, 2 " NPTF (m) 1 323732 (36)
23 323693 Gasket, 1.92 " OD (Aluminum) 1 323734 (46)
24 333257-2 Tube, Pump, 25.65 " Long 1 Model 7889-6 323738 (44)
333257-5 Tube, Pump, 15.65 " Long 1 Model 7889-B & C 323741 (41)
25 131402 Gasket, 1.68 " OD (Aluminum) 4 323742 (40)
26 337380 Barrel Assembly 1 323747-2 (39)
27 Ring, Wear (Glass-Reinforced Nylon) 1 Included w/ 337380 324648 (18)
28 Seal, 1.00 " ID x 1.375 " OD 1 326750-B1 (22)
29 Bearing (Brass) 1 327705 (33)
30 Spacer 1 330481-2 (12)
31 332246 Piston 1 332222 (15)
32 323717 Retainer 1 332223 (13)
33 327705 Spring, 1-1/2 " Long Straight 1 332225 (19)
34 Ball, 1/2 " Dia. 1 332228 (16)
35 50666 Washer, 0.87 " OD (Aluminum) 1 332246 (31)
36 323732 Adapter and Insert Assembly 1 333085 (48)
37 171032-9 Pin, Roll, 3/32 Dia. x 3/4 " Long 1 333186 (20)
38 333342 Rod, Primer 1 333186-A1 (20)
39 323747-2 Adapter 1 333256 (21)
40 323742 Washer, Guide 1 333257-2 (24)
41 323741 Screw, 1.00 " 1 333257-5 (24)
42 Washer, 0.93 " OD (Nylon) 2 333342 (38)
43 Seal, 0.50 " ID x 0.950 " OD 1 333693 (49)
44 323738 Body, Valve 1 337436 (11)
45 131398-1 Seat, Valve 1 337376 (30)
46 323734 Plate 1 337377 (29)
47 18850 Nut, Elastic Stop, 1/4 " - 28 1 337378 (42)
48 333085 Body, Primer 1 Model 7889-6 & C 337379 (27)
49 333693 Body, Primer, 1-1/2 " NPTF (m) 1 Model 7889-B 337380 (26)
Legend:
Part numbers left blank (or in italics) are not available separately
designates a repair kit item

SER 7889-6 High-Pressure Material Pump
Revision (3-03) 6 Alemite Corporation

High-Pressure Material Pump SER 7889-6
Alemite Corporation 7 Revision (3-03)
4. Lower the Air Motor onto the wood block.
5. Remove upper Spring Clip (18) that secures the air
motor piston to the Coupling.
6. Rotate the Coupling until the air motor piston is free.
7. Remove the Air Motor Assembly.
Access to Upper Seal (Packing)
8. Remove lower Spring Clip (18) that secures Upper
Piston Rod (19) to the Coupling.
• Remove the Coupling from the Upper Piston Rod.
9. Loosen Jam Nut (21) that secures the Pump Tube
assembly to Body (16).
10. Place a lever between the Upper Mounting and
Packing Screw (11).
CAUTION
Support the Body and Upper Mounting assembly
during removal. Damage to the Upper Piston Rod
can occur.
11. Unscrew the Body and Upper Mounting assembly
from Pump Tube (24).
12. Remove Gasket (23) from the Body.
Overhaul
NOTE: Refer to Figure 3-A and 3-B for
component identification on all overhaul
procedures.
Prior to performing any maintenance procedure, the
following safety precautions must be observed. Personal
injury may occur.
WARNING
Do not use halogenated hydrocarbon sol-
vents such as methylene chloride or 1,1,1-trichlor-
ethane in this pump. An explosion can result
within an enclosed device capable of containing
pressure when aluminum and/or zinc-plated parts
come in contact with halogenated hydrocarbon
solvents.
Release all pressure within the system prior to
performing any overhaul procedure.
• Disconnect the air supply line from the pump
motor.
• Into an appropriate container, operate the
control valve to discharge remaining pressure
within the system.
Never point a control valve at any portion of your
body or another person. Material discharged at
high velocity can penetrate the skin and cause
severe injury. Should any fluid appear to puncture
the skin, get medical care immediately.
Read each step of the instructions carefully. Make
sure a proper understanding is achieved before
proceeding.
Disassembly
Separate Air Motor from Pump Tube
1. Clamp the pump assembly vertically in a vise at Bung
Adapter (22).
2. Remove Screws (5), Lock Washers (7), and Nuts (8)
that secure the Air Motor Assembly to the Pump Tube
Assembly.
3. Lift the motor upward to expose upper Coupling (17)
and at the same time place a wood block (2’ x 4’) onto
the surface of Upper Mounting (12). See Figure 4.Figure 4 Separation of Air Motor from Pump Tube with
use of Wooden Block

SER 7889-6 High-Pressure Material Pump
Revision (3-03) 8 Alemite Corporation
Body Seal (Packing)
13. Remove the Packing Screw from the Body.
IMPORTANT: Should the pump contain flat
packings in the Body (see Figure 5), the
pump must be converted to use Seal (14).
Replace existing Screw with Packing Screw
(11) [order separately].
14. Remove Upper Bearing (13), Seal (14), and Lower
Bearing (15) from the Body.
15. Remove Screws (9) and Lock Washers (10) that secure
the Upper Mounting to the Body as required.
• Separate the Upper Mounting from the Body.
Pump Tube
16. Move and secure the Bung Adapter to Adapter (39).
• Secure the pump assembly once again horizontally
in the vise.
17. Unscrew Primer Body (48 or 49) from Adapter (39).
18. Remove Stop Nut (47) from Primer Rod (38).
• Support the Primer Rod through the hole as needed.
19. Remove Plate (46) from the Primer Rod assembly.
20. Grip Upper Piston Rod (19) and pull the entire rod
assembly from the Pump Tube.
21. Remove Gasket (25), Valve Seat (45), and additional
Gasket (25) from the Adapter.
22. Remove Valve Body (44) [with attached components]
and Guide Washer (40) from the Adapter.
23. Remove Screw (41), nylon Washer (42), Seal (43) and
additional Washer (42) from the Valve Body.
24. Unscrew Pump Tube (24) from the Adapter.
• Use a strap wrench.
25. Remove Spacer (30) from Barrel Assembly (26).
IMPORTANT: Should the pump contain flat
packings in the obsolete Barrel Assembly
(see Figure 5), the pump must be converted
to use Seal (28), Bearing (29), and Spacer
(30). Order Barrel Assembly (26) separately.
26. Remove the Barrel Assembly from the Pump Tube.
27. Remove both aluminum Gaskets (25).
28. Remove brass Bearing (29), Seal (28), and nylon Wear
Ring (27) from the Barrel Assembly.
Rod Assembly
29. Remove upper and lower Spring Clips (18) that secure
Lower Piston Rod (20) and Piston (31) to Coupling
(17).
30. Unscrew the Lower Piston Rod and the Piston from the
Coupling.
CAUTION
Support the Piston and Primer Rod assembly dur-
ing Roll Pin (37) removal. Damage to components
can occur.
31. Remove Roll Pin (37) that secures Adapter and Insert
Assembly (36) to Primer Rod (38).
• Use a punch and a small hammer.
32. Unscrew the Primer Rod and the Piston from the
Adapter and Insert Assembly.
33. Remove aluminum Washer (35), Ball (34), Spring
(33), and Retainer (32) from the Piston.
34. Separate Upper Piston Rod (19) from the Lower Piston
Rod as required.
Clean and Inspect
NOTE: Use the appropriate repair kit for
replacement parts. Make sure all the compo-
nents are included in the kit before discard-
ing used parts.
1. Clean all metal parts in a modified petroleum-based
solvent. The solvent should be environmentally safe.
2. Make sure to remove the thread sealant from both male
and female threaded connections.
3. Inspect all parts for wear and/or damage.
• Replace as necessary.
4. Inspect Upper Piston Rod (19), Piston (31), and Primer
Rod (38) closely. Use a magnifying glass to detect any
score marks.
• Replace as necessary.
5. Closely inspect the mating surfaces of all check valve
components for any imperfections Ensure a smooth
and clean contact is obtained when assembled.

High-Pressure Material Pump SER 7889-6
Alemite Corporation 9 Revision (3-03)
Assembly
NOTE: Prior to assembly, certain compo-
nents require lubrication in clean oil.
Refer to Table 4 for details.
Upper Rod Seal
NOTE: Refer to Figure 5 for a section
view of the Pump Tube Assembly.
1. Position Body (16) small diameter upward.
2. Install and seat Lower Bearing (15) [small diameter
first], Seal (14) [lips downward], and Upper Bearing
(13) into the Body.
3. Install and align Upper Mounting (12) onto the Body
as required.
4. Install Screws (9) and Lock Washers (10) that secure
the Upper Mounting to the Body.
• Tighten the Screws securely in a crisscross pattern.
5. Install Packing Screw (11) into the Body.
• Tighten the Screw securely with the use of the
torque bar. See Figure 3-B.
6. Install and seat Gasket (23) into the Body.
• Hold the Gasket in place with a coating of grease.
Rod and Pump Tube Assembly
7. Screw Lower Piston Rod (20) [with Loctite 222] into
Upper Piston Rod (19) as required.
8. Clamp the flats of Piston (31) into a soft-jaw vise.
• Make sure the Piston bore points upward.
9. Install Retainer (32) [flange end first] into the Pis-
ton.
• Make sure the Retainer centers and seats properly.
10. Install Spring (33) into the Piston.
11. Install Ball (34) into the Spring.
12. Install Washer (35) onto Adapter and Insert
Assembly (36).
13. Screw the Adapter and Insert Assembly (with Loctite
222) into the Piston.
• Tighten the Adapter and Insert Assembly securely.
14. Remove the Piston assembly from the vise.
15. Install Washer (42) into Valve Body (44).
16. Install and seat Seal (43) [heel end first] into the Valve
Body.
• Use care not to damage the Seal.
17. Install additional Washer (42) and Screw (41) into the
Va l v e B o d y.
• Do not tighten or seat the Screw.
18. Lubricate Primer Rod (38) with Grease.
19. Install the Valve Body assembly (Screw upward) onto
the upper end of the Primer Rod.
• Use care not to damage the Seal.
• Tighten the Screw into the Valve Body securely.
20. Install Guide Washer (40) onto the upper end of the
Primer Rod.
21. Screw the Primer Rod assembly into the Adapter and
Insert Assembly until the roll pin holes align.
CAUTION
Support the Primer Rod and the Adapter and Insert
Assembly during Roll Pin installation. Damage to
components can occur.
22. Install Roll Pin (37).
• Use a small hammer.
23. Install Valve Seat (45) [small diameter first], Plate (46)
[convex surface first], and Stop Nut (47) onto the lower
end of the Primer Rod.
• Tighten the Stop Nut securely. Place a small punch into
the hole of the Primer Rod to prevent its rotation.
24. Secure Bung Adapter (22) [threads downward} onto the
internally-threaded end of Adapter (39).
• Secure the Bung Adapter in a vise to align the Adapter
horizontally.
Internally-Threaded End of Adapter
25. Install Gasket (25) into the internally-threaded end of the
Adapter.
Item No.
on Figure 3-B Description
14 Seal, 0.812 " ID x 1.312 " OD
27 Ring, Wear (Glass-Reinforced Nylon)
28 Seal, 1.00 " ID x 1.375 " OD
43 Seal, 0.50 " ID x 0.950 " OD
Table 4 Lubricated Components

SER 7889-6 High-Pressure Material Pump
Revision (3-03) 10 Alemite Corporation
Figure 5 Pump Tube Assemblies 333183-A1, 333183-B1 and 333183-C1 - Section View
Refer to Figure 3-B Parts List for Parts identification

High-Pressure Material Pump SER 7889-6
Alemite Corporation 11 Revision (3-03)
26. Install the Primer Rod and Piston assembly
(Piston end first) into the Adapter.
• Center and seat all components properly. Pull on the
Piston as necessary. Use care to ensure the Gasket
does not move.
27. Install the additional Gasket (25) onto the Valve Seat.
28. Temporarily screw Primer Body (48 or 49) into the
Adapter.
• Do not apply Loctite 222 at this time.
Externally-Threaded End of Adapter
29. Install steel Spacer (30) into the externally-threaded
end of the Adapter.
• Make sure the Spacer centers and seats properly.
30. Install Gasket (25) over the Spacer and onto the
Adapter.
31. Position Barrel Assembly (26) with the large diameter
pointing upward.
32. Install Wear Ring (27) into the Barrel Assembly.
33. Install and seat Seal (28) [lip end first] into the Barrel
Assembly.
34. Install Bearing (29) into the Barrel Assembly.
CAUTION
Use care installing the Barrel Assembly over the
threads of Piston (31). Damage to the Seal can
occur.
35. Install the Barrel Assembly (large diameter first) onto
Piston (31).
• Make sure the Barrel Assembly seats properly
against Spacer (30).
36. Install Gasket (25) onto the Barrel Assembly.
37. Screw lower Coupling (17) onto Lower Piston Rod
(20) until the Spring Clip holes align.
38. Install Spring Clip (18).
39. Screw the Rod and Coupling assembly onto the Piston
until the Spring Clip holes align.
40. Install the Spring Clip.
IMPORTANT: If a primer is used with Loc-
tite 222, the curing time is greatly reduced.
41. Screw Pump Tube (24) onto Adapter (39)
[with Loctite 222].
• Do not tighten at this time.
42. Unscrew Primer Body (48 or 49) from the Adapter
43. Screw the Primer Body [with Loctite 222] back into
the Adapter.
• Do not tighten at this time.
44. Move and secure the Bung Adapter to the upper end of
the Pump Tube.
• Secure the pump assembly once again horizontally
in the vise.
45. Screw Jam Nut (21) onto the Pump Tube.
46. Lubricate the Upper Piston Rod assembly with grease.
CAUTION
Use care installing the Body and Upper Mounting
assembly. Damage to Seal (14) can occur.
47. Install (with a slight twisting motion), and screw the
Body and Upper Mounting assembly onto the Pump
Tube.
48. Push on Plate (46) to expose the Upper Piston Rod
from Packing Screw (11) as necessary.
Step for Models 7889-6 and 7889-C
49. Place a wrench or other suitable tool into the slot of
Primer Body (48).
• Tighten all the components of the assembly securely.
• Crush all Gaskets.
Step for Model 7889-B Only
50. Place a pipe wrench onto Primer Body (49).
• Tighten all the components of the assembly securely.
• Crush all Gaskets.
51. Tighten Jam Nut (21).
52. Screw upper Coupling (17) onto the Rod until the
Spring Clip holes align.
53. Install lower Spring Clip (18).

SER 7889-6 High-Pressure Material Pump
Revision (3-03) 12 Alemite Corporation
Attach Pump Tube to Air Motor
54. Position the pump assembly vertically in a soft-jaw
vise.
55. Place a wood block (2’ x 4’) onto the surface of the
Upper Mounting as illustrated in Figure 4.
56. Position Air Motor Assembly (2) onto the Pump Tube
Assembly and block.
• Make sure to orient the Air Motor Assembly
properly.
57. Screw the air motor piston rod into the Coupling until
the Spring Clip holes align.
58. Install the Spring Clip.
59. Remove the block and position the Air Motor
Assembly onto the Pump Tube Assembly.
60. Install Screws (5), Lock Washers (7), and Nuts (8) that
secure the Air Motor Assembly to the Pump Tube
Assembly.
• Tighten the Screws securely in a crisscross pattern.
Bench Test and Operation
WARNING
Do not exceed the lowest pressure rating
of any component in the system.
Never point a control valve at any portion of your
body or another person. Lubricant discharged at
high velocity can penetrate the skin and cause
severe injury. Should any fluid appear to puncture
the skin, get medical care immediately.
Ensure all components are in operable condition.
Replace any suspect parts prior to operation.
Should leakage occur anywhere within the system,
disconnect air to the motor. Personal injury can
occur
1. Make sure air pressure at the regulator reads zero.
2. Install air Connector (3) to the inlet of the air motor.
3. Install Air Coupler (4) to an air supply line.
4. Connect the Air Coupler assembly to the Connector.
5. Slowly supply air pressure [not to exceed 30 psi
(2.1 Bars)] to the pump’s motor.
• The pump assembly should cycle.
If the pump assembly does not cycle, refer to the
Troubleshooting Chart for details.
With air pressure at zero:
6. Connect a product hose to the pump’s material outlet.
• Direct the hose into an appropriate collection
container.
7. Place the pump in the product to be dispensed.
8. Slowly supply air pressure to the pump’s motor.
9. Allow the pump to cycle slowly until the product is
free of air.
If the pump assembly does not prime, refer to the
Troubleshooting Chart for details.
With air pressure at zero:
10. Attach a control valve to the outlet hose of the pump.
• Make sure the nozzle on the control valve is open
and pointed into an appropriate collection container.

High-Pressure Material Pump SER 7889-6
Alemite Corporation 13 Revision (3-03)
11. Slowly supply air pressure to the pump’s motor.
12. Allow the pump to cycle slowly until the product is
once again free of air.
13. Set the air pressure to 100 psi (6.9 Bar).
14. Operate the control valve into the container
momentarily.
15. Shut off the control valve.
• Visually inspect the pump for external leaks.
• The pump should not cycle more than once or
twice in one hour.
If the pump does not stall, refer to the
Troubleshooting Chart for details.
16. Check the motor for air leakage.
If the motor leaks, refer to the Air Motor Service
Guide for details.
IMPORTANT: Make sure to reset the air
pressure to the required operating pres-
sure.
Installation
Additional items that should be incorporated into the air
piping systems are listed in Table 5.
* Although the air motor is lubricated at the factory, the
life of the motor can be extended with the use of a lubricator.
Part Number Description
338862 Moisture Separator/Regulator & Gauge Combination
5608-2 Moisture Separator
7608-B Regulator and Gauge
5908-2 Lubricator *
Tabl e 5 Air Line Components

SER 7889-6 High-Pressure Material Pump
Revision (3-03) 14 Alemite Corporation
Troubleshooting Chart
Pump Indications Possible Problems Solution
Pump does not cycle 1. Air motor not operating properly
2. Pump tube jammed and/or contains
loose components
3. Insufficient air pressure
1. Inspect air motor and rebuild or
replace as necessary
2. Rebuild pump tube
3. Increase air pressure
Pump will not prime 1. Excessive cycling speed
2. Pump leaking internally
1. Reduce air pressure
2. See Internal Leaks
Pump cycles rapidly Product source empty Replenish product
Pump cycles continuously, or
slowly (once or twice/hour)
1. Pump leaking internally
2. Pump leaking externally
3. Distribution system leaking
1. See Internal Leaks
2. See External Leaks
3. Correct leak
External Leaks
Product leakage visible at bottom
of Packing Screw (11)
1. Damaged Seal (14)
2. Damaged Upper Piston Rod (19).
1. Replace Seal (14)
2. Replace Upper Piston Rod (19)
Product leakage visible at bottom
of Body (16)
1. Pump tube not sufficiently tight
2. Damaged Gasket (23)
1. Tighten pump tube assembly
2. Replace Gasket (23)
Product leakage visible at weep
hole in Pump Tube (24) and/or
Adapter (39)
1. Pump tube not sufficiently tight
2. Damaged Gasket(s) (25)
1. Tighten pump tube assembly
2. Replace Gaskets (25)
Internal Leaks
Pump does not prime or cycles
continuously, or slowly
(once or twice/hour)
1. Foreign material between Ball (34) and
Adapter and Insert assembly (36)
2. Foreign material between Valve
Body (44) and Valve Seat (45)
3. Worn or damaged Ball (34)
4. Worn or damaged Adapter and Insert
assembly (36)
5. Worn or damaged Valve Body (44)
6. Worn or damaged Valve Seat (45)
7. Worn or damaged Seal (28)
8. Worn or damaged Piston (31)
9. Worn or damaged Seal (43)
10. Worn or damaged Primer Rod (38)
Locate and eliminate source of foreign
material.
Disassemble pump tube, clean, inspect
and replace worn or damaged
components.
Changes Since Last Printing
Changed Pump Displacement per Cycle Value in Ta b l e 1