Alemite 7730 Service Manual
Service Guide
High-Pressure Bulk Grease Pump
Description
The major components of pump model 7730 consist of an airoperated motor and a pump tube. The air motor connects directly
to the double-acting reciprocating pump tube.
This high-pressure (75:1 ratio) grease pump is designed to
deliver a range of greases [up to NLGI # 3] directly from bulk
containers.
Mounting
In most cases these pumps connect horizontally to a bulk
container . S ee Figure 6. The pump includes the male portion of a
3-inch camlock connection for ease in installation.
7730
Distribution System
The use of the proper equipment that comprise the entire
product distribution system is essential.
All components must have a pressure rating that allows safe
operation at the maximum anticipated pump pressure.
Specifications
Air Motor
Piston Diameter x Stroke
Inches Centimeters psi Bars
4-1/4 x 4 10.8 x 10.2 3/4 " NPTF (f) 100 6.9
For information on the air mo tor, refer to Service Guide SER 323440-4
Air Inlet / Outlet
Pump Tube
Max. Material
Material
Outlet
1/2 " NPTF (f) 7500 517 12.5 5.7 1. 36 22.3
* For detailed information , refer to Figure 3
Pressure
psi Bars Pounds Kilograms
Ta ble 1 7730 Model Series Specifications
Max. Delivery/Minute
(Approximate)*
Max. Air Pressure
Displacement
per Cycle
3
in
cm
3
Figure 1 High-Pressure Bulk Grease Pump
Model 7730
Alemite Corporation
PO Box 473515, Charlotte, North Carolina 28247-3515
www.alemite.com
Copyright © 2001 by Alemite Corpo ration
This document contai ns confid enti al infor mation that is the proper ty of Alemit e Corpora tion
670700 and is not to be copied , used, or disclo sed to others with out ex press w ritten permissio n. Revision (8-01)
SER 7730
SER 7730 High-Pressure Bulk Grease Pump
Figure 2-A High-Pressure Bulk Grease Pump Model 7730- Exploded View
Revision (8-01) 2 Alemite Corporation
High-Pressure Bulk Grease Pump SER 7730
Item
No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
Part No. Description Qty Notes
10522 Plug, Square Head Pipe, 1/4 " NPTF (m)
327706 Adapter, 1/2 " NPTF (m)
Motor Assembly, Air
328037 Connector, 3/4 " NPTF (m)
328031 Coupler Air, 1/2 " NPTF (f)
Screw, 1/2 " -20 x 2 "
Lockwasher, 1/2 "
Nut, 1/2 " -20
171009-33 O-Ring, 1-13/16" ID x 2 " OD
171009-35 O-Ring, 1-15/16" ID x 2-1/8 " OD
O-Ring, 1/2" ID x 5/8 " OD
338881 Body
323787 Screw, Cap, Socket Head, 1/2 " - 13
O-Ring, 1-3/16" ID x 1-5/16 " OD
1
1
1 See SER 323440-4
1
1
4
4
4
1
1
3
1
3
1
Numeric Order
Part # (Item #)
10522 (1)
11828 (6)
77807 (8)
171009-2 (11)
171009-13 (14)
171009-33 (9)
171009-35 (10)
172190-5 (16)
172190-6 (18)
172207-4 (7)
323440-C1 (3)
323693 (21)
323787 (13)
327706 (2)
15
16
17
18
19
337361 Washer, 1.55 " OD
20
332466 Spacer
21
323693 Gasket (Aluminum)
22
332465 Washer, 1.93 " OD
23
333256 Nut, Jam, 2.00 - 16 UN - 2B
Legend:
Part numbers left blank (or in italic s) are not available separately
designates a repair kit item
Spacer
Seal, 13/16 " ID x 1-1/16 " OD
Ring, Lantern (Brass)
Seal, 13/16 " ID x 1-9/16 " OD
1
1
1
1
1
1
2
1
1
Repair Kits
Part No. Kit Sym bol Description Notes
328031 (5)
328037 (4)
332465 (22)
332466 (20)
333256 (23)
337361 (19)
337362 (17)
337363 (15)
338881 (12)
393669
393623
393040-1
393530-5
393530-6
Kit, Major Repair Includes items on Figure 2-A and 2-B
Kit, Minor Repair (for Pump Tube Assembly) Includes items on Figure 2-A and 2-B
Kit, Minor Repair (for Body and Seal Group)
Kit, Seal [includes five (5) of item number 16]
Kit, Seal [includes five (5) of item number 18]
Alemite Corporation 3 Revision (8-01)
SER 7730 High-Pressure Bulk Grease Pump
Figure 2-B High-Pressure Bulk Grease Pump Model 7730 Series - Exploded View
Revision (8-01) 4 Alemite Corporation
High-Pressure Bulk Grease Pump SER 7730
Item
No.
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
Legend:
Part No. Description Qty Notes
171000-107 O-Ring, 4 " ID x 4-3/8 " OD
338838 Adapter, Camlock
323439 Coupling
324648 Clip, Spring
333257-6 Tube, Upper Pump, 9 " Long
131402 Gasket, 1.68 " OD (Aluminum)
337461 Barrel Assembly
337465 Ring, Wear (Glass-Reinforced Nylon)
Seal, 0.925 " ID x 1.300 " OD
337464 Ring, Back-Up
337463 Bearing (Brass)
337462 Spacer
337466 Piston
319763 Retainer
327704 Spring, 1-7/8 " Long Straight
Ball, 3/8 " Dia.
46584 Gasket, 0.64 " OD (Aluminum)
326855 Adapter and Insert Assembly
171032-8 Pin, Roll, 3/32 Dia. x 11/16 " Long
333343 Rod, Primer, 21/32 " Dia. x 7-3/16 "
323747-1 Adapter
326852 Washer, Guide
Seal, 0.650 " ID x 0.990 " OD
Body, Valve
131398-1 Seat, Valve
323734 Plate
18850 Nut, Elastic Stop, 1/4 " - 28
333085 Body, Primer
Part numbers left blank (or in italic s ) are not av ailabl e separat ely
designates a repair kit item
1
1
1
2
1
4
1 Includes Item 31
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
Numeric Order
Part # (Item #)
18850 (50)
46584 (40)
131398-1 (48)
131402 (29)
171000-107 (24)
171032-8 (42)
172190-13 (46)
172190-14 (32)
172270-9 (39)
319763 (37)
323439 (26)
323734 (49)
323747-1 (44)
324648 (27)
326852 (45)
326855 (41)
327704 (38)
333085 (51)
333257-6 (28)
333343 (43)
337461 (30)
337462 (35)
337463 (34)
337464 (33)
337465 (31)
337466 (36)
338422 (47)
338838 (25)
Repair Kits
Part No. Kit Symbol Description N otes
393669
393623
394078
393530-13
393530-14
Kit, Major Repa ir Includes items on Figure 2-A and 2-B
Kit, Minor Repair (for Pump Tube Assembly) Includes items on Figure 2-A and 2-B
Kit, Minor Repair (for Lower Pump Tube Packing)
Kit, Seal [includes five (5) of item number 46]
Kit, Seal [includes five (5) of item number 32]
Alemite Corporation 5 Revision (8-01)
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