Alemite 7795-A5 Series User manual

Alemite, LLC • 167 Roweland Drive, Johnson City, Tennessee 37601 • www.alemite.com
Copyright © 2018 by Alemite, LLC
SERVICE GUIDE
7795-A5
7795-B5*
SER 7795-A5
Revision (2-18)FORM: 670639
HIGHPRESSURE GREASE PUMP
Description
The major components of the pump models in the 7795 series
consist of an air-operated motor and a pump tube. The air motor
connects directly to the double-acting reciprocating pump tube.
These high-pressure non-divorced grease pumps (80:1 ratio) are
designed to deliver a range of greases (up to NLGI # 3) and operate
directly from their original drums or bulk containers*.
Models 7795 Series Comparison
Each pump model is designed with a pump tube length to accom-
modate dierent size containers. See Figure 1.
* Pump model 7795-A5 is operated in various type systems, Refer to
the section entitled Alternate Installation (page 12) for details.
Specications
Air motor*
Air motor
model
Air inlet Maximum
air pressure
Body Adapter
323640-4 3/4 in
NPTF
Not applicable 100 psi
(7 bar)
For additional air motor specications, refer to Service Guide
SER 323640-4*, form 397897*
* Indicates change
Noise level
Air pressure 60psi (4.1 bar) 100 psi (6.8 bar)
dB1) 96 98
1) measured distances: 3 ft. (0.9 m)
Pump model Container size X Y
7795-A5 400 lbs. 33 1/8 in
(84 cm)
52 1/4 in
(133 cm)
7795-B5 120 lbs. 25 5/8 in
(65 cm)
7795-B5
Figure 1 High-Pressure Pump Model 7795 Series Model 7795-A5 Shown
Pump model Material outlet adapter Maximum material
pressure
Deliver/min.
(approximate)
Displacement
per cycle
7795-A5 and 7795-B5 1/2 in NPTF (f) x 1/2 in NPTF (m) 8000 psi (552 bar) 13 lbs (6 kg) 2.45 in3(40.15 cm3)
** For detailed information, refer to Figure 3.
Table 1 High-pressure pump model 7795 series specications
Pump tube
* Indicates change

High pressure grease pump SER 7795-A5
Revision (2-18) 2 Alemite, LLC
131) 2)
14
15
16
17
1) 2)
1) 2)
1) 2)
1) 2)
181) 2)
19
201) 2) 3)
21
201) 2) 3)
22
See
Figure 5-B
12
Weep
hole
Weep
hole
11
101) 2)
91) 2)
81)
71) 2)
Apply
thread sealant
here
6
5
1
2
34
Part of air motor
323640-F1
Figure 2-A High-Pressure Grease Pump Model 7795 Series - Exploded View*
* Indicates change

SER 7795-A5 High pressure grease pump
Alemite, LLC 3 Revision (2-18)
Item
no.*
Part number Description Qty. Notes Numeric order
(Part # Item #)
1 323842 Bolt, eye, 3/8 in NPTF (m) 1 10522 (6)
2 Motor assembly, air 1 See SER 323640-4 171009-13 (13)
3 328037 Connector, 3/4 in NPTF (m) 1 Model 7795-A5, -B5 171009-33 (9)
4 328031 Coupler, air, 1/2 in NPTF (f ) 1 171009-35 (10)
5 327706 Adapter, 1/2 in NPTF (f) 1 172190-5 (15)
6 10522 Plug, pipe 1/4 in NPTF (m) 1 172190-6 (17)
7 323419 Washer, 1.29 in OD 1 Model 7795-MA 323419 (7)
8 324274 Bushing (rubber) 1 1)2) 323640-4 (2)
9 X171009-33 O-Ring, 1 13/16 in ID x 2 in OD 1 1) 323460-F1 (2)
10 X171009-35 O-Ring, 1 15/16 in ID x 2 1/8 in OD 1 1)2) Pack of ten (10) 323693 (20)
11 323786 Body 1 1)2) 323786 (11)
12 323787 Screw, Cap, Socket Head, 1/2 in - 13 3 323787 (12)
13 O-ring 1 3/16 in ID x 1 5/16 in OD 1 323842 (1)
14 Spacer 1 1)2) 324274 (9)
15 Seal, 0.812 in ID x 1.062 in OD 1 1)2) 327706 (5)
16 Ring, Lantern (Brass) 1 1)2) 328031 (4)
17 Seal, 0.812 in ID x 1.562 in OD 1 1)2) 328037 (3)
18 337361 Washer, 1.55 in OD 1 1)2) 332465 (21)
19 332466 Spacer 1 1)2) 332466 (19)
20 323693 Gasket 2 333256 (22)
21 332465 Washer, 1.93 in OD 1 1)2) 3) 337361 (18)
22 333256 Nut, Jam, 2.00 - 16 UN - 2B 1 337362 (16)
337363 (14)
Legend: Part numbers left blank (or in italics) are not available separately
1) 2) 3) designated a repair kit item
Repair kits
Part number Kit number Description Notes
398988-2 1) Kit, major repair Includes items on Figure 2-B and 2-B
393040-1 2) Kit, minor repair (for body and seal group)
393622* 3) Kit, minor repair (for pump tube assembly) Includes items on Figure 2-A and 2-B
393530-5 Kit, seal [includes ve (5) of item number 15]
393530-6 Kit, seal [includes ve (5) of item number 17]
* Indicates change

High pressure grease pump SER 7795-A5
Revision (2-18) 4 Alemite, LLC
Apply
Loctite 222
here
41
Weep
hole
42
43
441) 2) 3)
451) 2) 3)
44
46
271) 2) 3)
47
271) 2) 3)
48
491) 2)
Apply
Loctite 222
here
Apply
Loctite 222
here
50
33
34
35
36 1)
371) 2)
38 1)
391) 2)
40
Place
punch
here
321)
271) 2)
311) 2)
301) 2)
291) 2)
28
271) 2)
Weep
hole
26
241) 2)
23
241) 2)
25
241) 2)
231)
241) 2)
Figure 2-B High-Pressure Grease Pump Model 7795 Series - Exploded View*
* Indicates change

SER 7795-A5 High pressure grease pump
Alemite, LLC 5 Revision (2-18)
Item
no.*
Part no. Description Qty Note Numeric order
(part# item #)
23 323439 Coupling 2 18850 (49)
24 324648 Clip, spring 4 1) 2) Qty 2 in 2) kit 50666 (37)
25 323438-22 Rod, pump tube, 13.25 in Long 1 Model 7795-A5 131402 (27)
323438-23 Rod, pump tube, 5.75 in Long 1 Model 7795-B5 131398-1 (47)
26 333257-1 Tube, pump, 22.25 in Long 1 Model 7795-A5 171032-12* (39)
333257-3 Tube, pump, 14.75 in Long 1 Model 7795-B5 171700-32 (36)
27 131402 Gasket, 1.68 in OD 4 1) 2) 3) Qty 2 in 3) kit 172190-8 (45)
28 337380 Barrel assembly 1 Includes Item 31 172190-7 (30)
29 Ring, wear (glass-reinforced nylon) 1 1) 2) 323438-22 (25)
30 Bearing (brass) 1 1) 2) 323438-23 (25)
31* Seal, 1.00 in ID x 1.375 in OD 1 1) 2) 323439 (23)
32* Spacer 1 1) 323717 (34)
33 332246 Piston 1 323732 (38)
34 323717 Retainer 1 323734 (48)
35 327705 Spring, 1-1/2 in Long straight 1 323738 (46)
36 Ball, 1/2 in Dia. 1 1) 323741 (43)
37 50666 Washer, 0.87 in Od (aluminum) 1 1) 2) 323742 (42)
38 323732 Adapter and insert assembly 1 1) 323747-2 (41)
39 171032-12* Pin, roll, 3/32 dia. X 15/16 in Long 1 1) 2) 324648 (24)
40 333342 Rod, primer 1 327705 (35)
41 323747-2 Adapter 1 332246 (33)
42 323742 Washer, guide 1 333085 (50)
43 323741 Screw, 1.00 in 1 333257-1 (26)
44 Washer, 0.93 in OD (nylon) 2 1) 2) 3) 333257-3 (26)
45* 323738 Body, valve 1 1) 2) 3) 333342 (40)
46* Seal, 0.50 in ID x 0.950 in OD 1 1) 337376 (32)
47 131398-1 Seat, valve 1 1) 337377 (31)
48 323734 Plate 1337378 (44)
49 18850 Nut, elastic stop, 1/4 in - 28 1 337379 (29)
50 333085 Body, primer 1 1) 2) 337380 (28)
Legend: Part numbers left blank (or in italics) are not available separately
1) 2) 3) designated a repair kit item.
Repair kits
Part number Kit number Description Notes
398988-2 1) Kit, major repair Includes items on Figure 2-B and 2-B
393622 2) Kit, minor repair (for pump tube assembly) Includes items on Figure 2-A and 2-B
394077-1 3) Kit, minor repair (for lower pump tube packing)
393530-7 Kit, seal [includes ve (5) of item number 31]
393530-8 Kit, seal [includes ve (5) of item number 46]
* Indicates change

High pressure grease pump SER 7795-A5
Revision (2-18) 6 Alemite, LLC
Accessories*
Model number Follower Cover Air hose Material hose Union Bung adapter Muer
7795-A5 338912 323847-4 317811-5 317882-7 321155 326750-B1 324170
7795-B5 338804 323800-4
Performance curves
A pump’s ability to deliver material is based on the pressure (psi/bar) 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 four dierent 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/bar (left Y axis).
NLGI 2 grease at 77 °F (25 °C)
bar psi
Material discharge pressure
550
500
450
400
350
300
250
200
150
100
50
8000
7000
6000
5000
4000
3000
2000
1000
0
100 psi (6.9 bar) 100 psi (6.9 bar)
75 psi (5.2 bar) 75 psi (5.2 bar)
50 psi (3.4 bar)
50 psi (3.4 bar)
25 psi (1.7 bar) 25 psi (1.7 bar)
Legend:
Air pressure
Air consumption
Material discharge pressure
0 2 4 6 8 10 12 14 Pounds/minute
Delivery
1 2 3 4 5 6 Kilograms/minute
Air consumption
cfm lpm
160
140
120
100
80
60
40
20
0
4500
4000
3500
3000
2500
2000
1500
1000
500
Figure 3 Delivery versus Discharge Pressure and Air Consumption
Table 2 Model 7795 Series Accessories
* Indicates change

SER 7795-A5 High pressure grease pump
Alemite, LLC 7 Revision (2-18)
Overhaul
Note: refer to gure 2-a and 2-b for component identication
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 solvents such as
methylene chloride or 1,1,1-trichlorethane in this pump.
An explosion can result when aluminum and/or zinc-
plated parts in the pump 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. Accidental discharge of pressure and/or
material can result in injury.
Read each step of the instructions carefully. Make sure a proper
understanding is achieved before proceeding.
Removal
Note: these model pumps are used in numerous applications
and are mounted accordingly. The following procedures
consider the pump assembly to be mounted to a container
with a cover.
1. Remove the cover and pump assembly from its container.
2. Remove the four bolts that secure the pump assembly to the
cover.
Important: remove the follower from the bottom of the
container.
Disassembly*
1. Unscrew adapter (5) from air motor assembly (2).
2. Remove washer (7) and rubber bushing (8).
Separate pump tube from air motor*
3. Clamp the motor housing horizontally in a vise.
4. Loosen jam nut (22) that secures the pump tube assembly to
the air motor assembly.
CAUTION
Support the pump tube assembly during removal. Damage to
components can occur.
5. Unscrew pump tube (26) [with attached components] from
the air motor.
6. Pull on the pump tube to expose coupling (23).
7. Remove upper spring clip (24) that secures pump tube
rod (25) to coupling (23).
8. Unscrew the coupling from the air motor piston rod.
• Rotate the entire pump tube assembly.
Pump tube upper packing*
9. Unscrew cap screws (12) that secure body (11) to the air motor.
• Do not remove the cap screws from the body.
10. Remove the body from the air motor.
• Use the cap screws as levers.
11. Position the body on the bench with the larger diameter facing
upward.
12. Remove aluminum gasket (20), washer (21), and additional
gasket (20) from the body.
13. Remove spacer (19), washer (18), and seal (17).
14. Remove lantern ring (16) with seal (15), and spacer (14).
• Remove the seal from the lantern ring.
15. Remove o-ring (13), o-ring (9), and o-ring (10) from the body.
Pump tube*
16. Clamp the pump tube assembly at adapter (41) securely in a
soft-jaw vise.
17. Unscrew and remove pump tube (26) from the adapter.
18. Remove upper and lower spring clips (24) that secure pump
tube rod (25) to upper and lower couplings (23).
19. Unscrew the rod from both couplings.
* Indicates change

High pressure grease pump SER 7795-A5
Revision (2-18) 8 Alemite, LLC
Important: should the pump contain the obsolete piston
(see gure 5), and stall properly, certain parts within the
major repair kit are discarded. If the new piston is required,
order barrel assembly (28) and piston (33) separately.
20. Remove lower spring clip (24) that secures piston (33) to lower
coupling (23).
21. Unscrew the coupling from the piston.
22. Remove barrel assembly (29) from the piston.
23. Remove both aluminum gaskets (27).
24. Remove brass bearing (31), seal (30), and nylon wear ring (29)
from the barrel.
25. Unscrew primer body (50) from adapter (41).
26. Remove the primer rod (with attached components) from the
bottom of the adapter.
27. Remove spacer (32) from top of adapter.
28. Remove stop nut (49) from primer rod (40).
• Support the primer rod through the hole as needed.
29. Remove plate (48), gasket (27), valve seat (47), and additional
gasket (27) from the primer rod assembly.
CAUTION
Support the piston and primer rod assembly during roll pin (39)
removal. Damage to components can occur.
30. Remove roll pin (39) that secures adapter and insert assembly
(38) to primer rod (40).
• Use a punch and a small hammer.
31. Unscrew primer rod from adapter.
32. Remove valve body (46) [with attached components] and
guide washer (42) from the upper end of the primer rod as-
sembly.
33. Remove screw (43), nylon washer (44), seal (45) and additional
washer (44) from the valve body.
34. Unscrew the adapter from piston (33).
35. Remove aluminum washer (37), ball (36), spring (35), and
retainer (34) from the piston.
Clean and inspect*
Note: use the appropriate repair kit for replacement parts. Make
sure all the components are included in the kit before discarding
used parts.
1. Clean all metal parts in a modied petroleum-based solvent.
The solvent should be environmentally safe.
2. Inspect all parts for wear and/or damage.
• Replace as necessary.
3. Inspect piston (33) and primer rod (40) closely. Use a magnify-
ing glass to detect any score marks.
• Replace as necessary.
4. Closely inspect the mating surfaces of all check valve compo-
nents for any imperfections ensure a smooth and clean contact
is obtained when assembled.
Item no. on Figure 2-A Description Item number on Figure 2B Description
9 O-Ring, 1-13/16 in ID x 2 in OD 29 Ring, Wear (Glass-Reinforced Nylon)
10 O-Ring, 1-15/16 in ID x 2-1/8 in OD 30 Seal, 1.00 in ID x 1.375 in OD
13 O-Ring, 1-3/16 in ID x 1-5/16 in OD 45 Seal, 0.50 in ID x 0.950 in OD
15 Seal, 0.812 in ID x 1.062 in OD
17 Seal, 0.812 in ID x 1.562 in OD
Table 4 Components Lubricated in Clean Oil
* Indicates change

SER 7795-A5 High pressure grease pump
Alemite, LLC 9 Revision (2-18)
Assembly
NOTE: prior to assembly, certain components require
lubrication in clean oil. Refer to table 4 for details.
Pump tube upper packing*
Note: refer to gure 4 for a section view of the upper
packing components.
1. Install o-ring (9) and o-ring (10) onto body (11).
2. Position the body with the large diameter upward.
3. Install o-ring (13) into the body.
4. Install spacer (14) into the body.
• Make sure the spacer centers and seats properly.
5. Install seal (15) [lip end rst] into lantern ring (16).
6. Install the lantern ring assembly into the body.
• Make sure the assembly centers and seats properly.
7. Install and seat seal (17) [heel end rst] into the body.
CAUTION
Do not place washer (18) inside spacer (19). Damage to compo-
nents will occur.
8. Install washer (18) and spacer (19) into the body.
9. Lubricate the air motor piston rod with grease.
10. Install the body assembly (while holding the spacer in place)
onto the piston rod.
• Use a small hammer or other suitable tool.
11. Rotate the body to align the product outlet with the hole in the
air motor housing.
NOTE: refer to gure 2-a for steps 12 and 13.
12. Install washer (7) and bushing (8) onto adapter (5).
13. Install the adapter assembly (w/ thread sealant) into the body.
• Do not tighten the adapter at this time.
14
9
13
15
16
17
18
10
19
11
12
20
21
20
24
22
23
25
26
13
16
11
* Indicates change

High pressure grease pump SER 7795-A5
Revision (2-18) 10 Alemite, LLC
14. Install cap screws (12) that secure the body to the air motor.
• Tighten each cap screw securely.
15. Tighten the adapter assembly into the body.
16. Install gasket (20), washer (21), and additional gasket (20) into
the body.
• Make sure the components maintain their position.
17. Clamp the ats of piston (33) into a soft-jaw vise.
• Make sure the piston bore points upward.
Pump tube*
Note: refer to gure 5 for cross section view of pump tube
components.
18. Install retainer (34) [ange end rst] into the piston.
• Make sure the retainer centers and seats properly.
19. Install spring (35) into the piston.
20. Install ball (36) into the spring.
21. Install washer (37) onto adapter and insert assembly (38).
22. Screw the adapter (with loctite 222 ) into the piston.
See gure 2-b.
• Tighten securely.
23. Install washer (44) into valve body (46).
CAUTION
Use care seating seal (45) into the valve body. Damage to the seal
can occur.
24. Install and seat seal (46) [heel end rst] into the valve body.
25. Install additional washer (44) and screw (43) into the valve
body.
• Do not tighten or seat the screw.
23
24
24
25
26
27
29
28
30
31
27
32
33
34
35
36
37
38
39
40
41
42
43
44
46
45
47 27
50
48
49

SER 7795-A5 High pressure grease pump
Alemite, LLC 11 Revision (2-18)
26. Lubricate the primer rod with grease.
27. Install the valve body assembly onto the upper end of the
primer rod.
• Use a small hammer or other suitable tool.
28. Tighten the screw into the valve body securely.
29. Install guide washer (42) onto the primer rod.
30. Screw primer rod (40) into the adapter until the roll pin holes
align.
CAUTION
Support the primer rod and the adapter during roll pin (39) installa-
tion. Damage to components can occur.
31. Install roll pin (39).
• Use a small hammer.
32. Install valve seat (47), plate (48), and stop nut (49) onto the
primer rod.
• Tighten the stop nut securely. Place a small punch into the
hole of the primer rod to prevent its rotation
33. Position adapter (41) horizontally into the vise.
Internally-threaded end of adapter*
34. Install gasket (27) into the internally-threaded end of the
adapter.
35. Install the primer rod and piston assembly (piston end rst)
into the adapter.
• Center and seat all components properly. Pull on the
piston as necessary. Use care to ensure the gasket does
not move.
36. Install the additional gasket (27) onto valve seat (47).
Externally-threaded end of adapter*
37. Install spacer (32) into the externally-threaded end of the
adapter.
• Make sure the spacer centers and seats properly.
38. Install gasket (27) into the adapter.
39. Position barrel assembly (28) with the large diameter pointing
upward.
40. Install wear ring (29) into the barrel assembly.
41. Install and seat seal (30) [lip end rst] into the barrel assembly.
42. Install bearing (31) into the barrel assembly.
CAUTION
Use care installing the barrel assembly over the threads of piston (33).
Damage to the seal can occur.
43. Install the barrel assembly (large diameter rst) onto piston (33).
• Make sure the barrel assembly seats properly against
spacer (32).
44. Install gasket (27) onto the barrel assembly.
45. Screw the upper and lower couplings (23) onto each end of
pump tube rod (25) until the spring clip holes align.
46. Install spring clips (24).
47. Screw the rod and coupling assembly onto the piston.
• Install the spring clip.
Important: if a primer is used with loctite 222, the curing
time is greatlyreduced.
48. Screw pump tube (26) onto adapter (41) [With loctite 222 ].
See gure 2-b.
• Do not tighten.
49. Screw primer body (50) [with loctite 222] into the opposite end
of the adapter. See gure 2-b.
• Do not tighten.
50. Screw jam nut (22) onto the pump tube.
51. Push on plate (48) to expose coupling (23) from the pump
tube as necessary. Attach pump tube to air motor
52. Screw the coupling onto the air motor piston rod until the
spring clip holes align.
• Rotate the entire pump tube assembly.
53. Install the Spring Clip.
54. Screw the pump tube assembly into Body (11).
* Indicates change

High pressure grease pump SER 7795-A5
Revision (2-18) 12 Alemite, LLC
55. Place a large wrench or other suitable tool into the slot of
Primer Body (50).
• Tighten all the components of the assembly securely.
Crush all gaskets.
56. Tighten Jam Nut (22).
Operation
Bench Test and Prime
NOTE: Perform the following procedures at a pressure not
to exceed 40 psi (2.8 Bars).
1. Make sure air pressure at the regulator reads zero.
2. Connect a product hose to the pump’s material outlet.
3. Place the hose into an appropriate collection container.
4. Install Air Connector (3) to the inlet of the Air Motor.
5. Connect Air Coupler (4) to the Connector.
6. Slowly supply air pressure to the pump’s motor.
• The pump assembly should cycle.
If the pump assembly does not cycle, refer to the Troubleshooting
Chart for details.
Priming
With air pressure at zero:
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 system and product is
free of air.
If the pump assembly does not prime, refer to the Trouble-
shooting Chart for details.
10. Check the motor for air leakage.
If the motor leaks, refer to the Air Motor Service Guide for details.
Stall Test
WARNING
Should leakage occur anywhere within the system, disconnect air to
the motor. Personal injury can occur.
With air pressure at zero:
11. Attach a control valve to the outlet hose of the pump.
12. Set the air pressure to 100 psi (6.9 Bar).
13. Operate the control valve into a container.
14. Allow the pump to cycle until the system and product is once
again free of air.
15. Shut o the control valve.
• The pump should not cycle.
If the pump cycles slowly (once or twice a minute) or continuously,
refer to the Troubleshooting Chart for details.
Installation
NOTE: The following procedures consider the pump assembly to be
installed onto a container with a cover.
1. Install the bolts that attach the cover to the pump assembly.
• Tighten the bolts securely.
2. Place the follower into the container.
3. Press downward and maneuver the follower until grease
appears around its edges and center hole.
• Make sure all air is removed.
4. Install the pump assembly through the follower and onto the
container.
5. Secure the cover and pump assembly to the container.
Additional items that should be incorporated into the air pip-
ing systems are listed in Table 5.

SER 7795-A5 High pressure grease pump
Alemite, LLC 13 Revision (2-18)
Part number Description
338862 Moistrue separator/regulator and gauge
combination
5608-2 Moisture separator
7608-B Regulator and gauge
5908-2 Lubricator*
Table 5 Air Line Components
* Although the air motor is lubricated at the factory, the life of the
motor can be extended with the use of a lubricator.
Alternate Installations
Pump model 7795-A5 is often mounted:
• from either a single- or dual-post hoist
• in bulk grease distribution systems
When either of these type arrangements are employed, alternate
accessory items must be purchased. See Table 6.
Application Followers Adapter kit Primer body
Single-post hoist 327242 327247
Dual-post hoist 327690
Bulk grease 333693*
* 1 1/2 in NPTF (m)
Table 6 Accessory Items for Alternate Installations

High pressure grease pump SER 7795-A5
Revision (2-18) 14 Alemite, LLC
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. Insucient 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. 1. Product source empty. 1. Replenish product.
Pump cycles continuously, or
slowly (once or twice/minute).
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 weep hole in
Body (11).
1. Damaged Seal (17).
2. Damaged air motor piston rod.
1. Separate pump tube from air motor and
replace Seal (17).
2. Inspect piston rod and replace as
necessary
Product leakage visible at bottom
of Body (11).
1. Pump tube not suciently tight.
2. Damaged gasket(s) (20).
1. Tighten pump tube assembly.
2. Separate pump tube from air motor and
replace gaskets (20).
Air leakage at weep hole in body (11). 1. Damaged seal (15). 1. Separate pump tube from air motor and
replace seal (15).
Product leakage visible at weep hole in
Tube (26) and/or Adapter (41).
1. Pump tube not suciently tight.
2. Damaged gasket(s) (27).
1. Tighten pump tube assembly
2. Disassemble pump tube and replace
gaskets (27).
Internal Leaks
Pump does not prime or cycles continu-
ously, or slowly (once or twice/minute).
1. Foreign material between ball (36) and
adapter and insert assembly (38).
2. Foreign material between valve body (46)
and valve seat (47).
3. Worn or damaged ball (36),
4. Worn or damaged adapter and insert as-
sembly (38).
5. Worn or damaged valve body (46).
6. Worn or damaged valve seat (47).
7. Worn or damaged seal (30).
8. Worn or damaged piston (33).
9. Worn or damaged seal (45).
10. Worn or damaged primer rod (40).
Locate and eliminate source of foreign
material.
Disassemble pump tube, clean, inspect and
replace worn or damaged components.
Troubleshooting chart*
* Indicates change

SER 7795-A5 High pressure grease pump
Alemite, LLC 15 Revision (2-18)
Declaration of conformity as dened by
Machinery Directive 2006/42/EC
This is to declare that the design of the low pressure uid lubricant
pump complies with the provisions of directive 2006/42/CG
Applied standards:
•EN292-1SafetyofMachinery-BasicConcepts,GeneralPrinciples
and Design - Part 1: Basic Terminology, Methodology.
•EN292-2SafetyofMachinery-BasicConcepts,GeneralPrinciples
and Design - Part 2: Technical Principles and Specications -
ncorporates amendments 1 (1995) and 2 (1997) EN 809 Pumps and
Pump Units for Liquids - Common Safety Requirements.
•EN349SafetyofMachinery-MinimumGapstoAvoidCrushingof
Parts of the Human Body.
St. Louis, MO 08/14,
Robert Hoeer, Director Product Development and
Product Engineering

www.alemite.com
Alemite, LLC • 167 Roweland Drive, Johnson City, Tennessee 37601 • www.alemite.com