OPERATOR’S MANUAL
LM2305A-X-B
INCLUDING: SPECIFICATIONS, SERVICE KITS, GENERAL INFORMATION, PARTS, TROUBLESHOOTING
INCLUDE MANUAL: S- GENERAL INFORMATION (PN 97999-
RELEASED: 12-27-04
632
624).
REVISED:
9-23-11
(REV. 03)
3” AIR MOTOR
5:1 RATIO
0 - 750 P.S.I. RANGE
LM2305A-XX-B
TWO-BALL PUMP SERIES
READ THIS MANUAL CAREFULLY BEFORE INSTALLING,
OPERATING OR SERVICING THIS EQUIPMENT.
It is the responsibility of the employer to place this information in the hands of the operator. Keep for future reference.
SERVICE KITS
PUMP DATA
• Use only genuine AROR replacement parts to assure compatible
pressure rating and longest service life.
• 637226 Pump Rebuild Kit. Includes the necessary soft parts for
normal service of the entire pump.
MODEL LM2305A-XX-B
SPECIFICATIONS
Air Inlet (female)
See “Specifications”
Model Series (refer to option chart) . . . . . . . . LM2305A-XX-B
Type . . . . . . . . . . . . . . . . . . . . . . . . . Air Operated, Two-Ball
Double Acting Oil Pump
“A”
Ratio . . . . . . . . . . . . . . . . . . . . . . . . . 5:1
Air Motor Diameter . . . . . . . . . . . . . . 3” (7.62 cm)
Stroke . . . . . . . . . . . . . . . . . . . . . . 3” (7.62 cm)
Air Inlet (female)
Outlet (female)
See “Specifications”
1-7/16”
(36.5 mm)
LM2305A-X1-B . . . . . . . . . . . . . . 1/4 - 18 N.P.T.F. - 1
LM2305A-X2-B . . . . . . . . . . . . Rp 1/4 (1/4 -19 BSPParallel)
Material Inlet (female)
2” N.P.T. Bung Adapter
LM2305A-X1-B . . . . . . . . . . . . . . 1-1/2 - 11-1/2 N.P.T.F. - 1
LM2305A-X2-B . . . . . . . . . . Rp 1-1/2 (1-1/2 - 11 BSP Parallel)
Material Outlet (female)
“B”
Figure 1
LM2305A-X1-B . . . . . . . . . . . . . . 1/2 - 14 N.P.T.F. - 1
LM2305A-X2-B . . . . . . . . . . . . Rp 1/2 (1/2 -14 BSPParallel)
Pump Construction . . . . . . . . . . . . Carbon Steel
Dimensional Data . . . . . . . . . . . . . . . See chart
Weight . . . . . . . . . . . . . . . . . . . . . . . . See chart
1/2” (12.7 mm) Thru hole
Material Inlet (female)
See “Specifications”
NOTE: Dimensions are shown in inches and (mm), supplied for reference only and are typically
rounded up to the nearest 1/16 inch.
PERFORMANCE
Air Inlet Pressure Range . . . . . . . . . . 0 - 150 p.s.i. (0 - 10.3 bar)
Fluid Pressure Range . . . . . . . . . . . . 0 - 750 p.s.i. (0 - 51.7 bar)
Cycles / Minute Rec’d @ Working Flow . . . . 170
Displacement In3 Per Cycle . . . . . . . . 8.3
MODEL
“A” (mm)
21” (533.4)
“B” (mm)
9-3/4” (247.7)
30” (762)
WEIGHT (kg)
15.75 (7.14)
24.3 (11.02)
28.5 (12.93)
31.7 (14.38)
LM2305A-1X-B
LM2305A-3X-B 41-1/4” (1047.8)
Volume / Cycle . . . . . . . . . . . . . . . . . . 4.60 oz. (135.97 ml)
Cycles Per Gallon . . . . . . . . . . . . . . . 28
LM2305A-4X-B
51” (1295.4)
39-3/4” (1009.7)
LM2305A-5X-B 58-5/8” (1489.1) 47-3/8” (1203.3)
Maximum Working Flow Rate . . . . . . 6 g.p.m. (22.7 l.p.m.)
Maximum Flow Rate . . . . . . . . . . . . . 9 g.p.m. (34.1 l.p.m.)
Noise Level @ 100 p.s.i. . . . . . . . . . . . 85 db(A)*
Accessories Available . . . . . . . . . . . . 61113 Wall Mount Bracket
66073-1 Air Line Connection Kit
IMPORTANT
This is one of two documents which support the pump. Replace-
ment copies of these forms are available upon request.
= LM2305A-X-B Model Operator’s Manual
- S-632 General Information Lubrication Piston Pumps
* The pump sound pressure level has been updated to an Equivalent Continuous Sound
Level (L ) to meet the intent of ANSI S1. 13-1971, CAGI-PNEUROP S5.1 using four
Aeq
microphone locations.
PATENTED
INGERSOLL-RAND COMPANY
209 NORTH MAIN STREET -- BRYAN, OHIO 43506
(800) 495--0276 D FAX (800) 892--6276
E2011
CCN 15237399
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PARTS LIST / LM2305A-XX-B
1
6
7
27
28
2
3
4
8
9
5
29
30 ,
10
11
13
31
32
33
34 ,
35
. 12
15
37
9
8
36 ,
16
5
4
17
38 H
H
7
6
18
19
39 ,
20
21
40
41
1/2”
20
3
42
43 ,
22
23
24
25
26
46
44
45
H Lubricate with Gadus S2 U1000 grease at assembly.
. TORQUE REQUIREMENTS ,
(12) 80 in. lbs (9 Nm) maximum.
(36) 80 in. lbs (9 Nm) minimum.
(30, 34) 65 ft lbs (88.1 Nm) minimum.
(39, 43) 140 ft lbs (189.8 Nm) minimum.
Figure 2
LM2305A-X-B
Page 3 of 4
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OPERATING AND SAFETY PRECAUTIONS
PUMP REASSEMBLY
NOTE: Thoroughly clean and lubricate all seals. Replace all soft
parts with new ones included in the repair kit. Note: Refer to the il-
lustration (figure 2, page 3) for “U” cup lip seal direction.
1. Replace (27) “O” ring on (28) piston rod.
WARNING READ THE GENERAL INFORMATION MANUAL
INCLUDED FORADDITIONAL OPERATINGAND SAFETYPRE-
CAUTIONS AND OTHER IMPORTANT INFORMATION.
WARNING EXCESSIVE INLET PRESSURE. Can cause ex-
plosionresultinginsevereinjuryordeath.Donotexceedmaxi-
mumoperatingpressureof750p.s.i.(51.7bar)at150p.s.i.(10.3
bar)inletairpressure.Donotrunpumpwithoutusingaregula-
tor to limit air supply pressure to the pump.
WARNING EXCESSIVE MATERIAL PRESSURE. Can cause
equipment failure resulting in severe injury or property dam-
age. Do not exceed the maximum material pressure of any
component in the system.
2. Replace (20) “U” cups on (21) piston and assemble (21) piston onto
(28) piston rod, securing with (19) washer and (18) retaining ring.
3. Assemble (3) gasket to (22) lower cap and assemble(22) lower cap
and (23) “O” ring onto (28) piston rod.
4. Assemble(33)balland(31)pistoncupto(30)cupfollower, securing
with (32) washer and (34) inner check seat.
5. Replace (26) packing in (25) bushing.
6. Replace (24) “O” ring on (25) bushing and assemble (25) bushing
onto (28) piston rod.
7. Clamp on flats of (28) piston rod in a vise.
PUMP RATIO X
MAXIMUM PUMP
FLUID PRESSURE
=
INLET PRESSURE TO PUMP MOTOR
8. Assemble(29) rodand(30) cup follower to(28) pistonrod and tight-
enbyusinga1-1/2”wrenchon(34)innercheck. NOTE:Torque(34)
check seat to 65 ft lbs (88.1 Nm).
Pump ratio is an expression of the relationship between the pump motor area and
the lower pump end area. EXAMPLE: When 150 p.s.i. (10.3 bar) inlet pressure is
supplied to the motor of a 5:1 ratio pump it will develop a maximum of 750 p.s.i.
(51.7 bar) fluid pressure (at no flow) -- as the fluid control is opened, the flow rate
will increase as the motor cycle rate increases to keep up with the demand.
9. Clamp (39) tube horizontally in a vise.
10. Assemble (28) piston rod and components into (35) base.
11. Using a 1-5/8” wrench, thread (25) bushing into (35) base until it
“bottoms”. NOTE: Be careful not to raise any burrs on flats of (25)
bushing.
NOTICE:Thermalexpansioncanoccurwhenthefluidinthemateri-
al lines is exposed to elevated temperatures. Example: Material
lines located in a non-insulated roof area can warm due to sunlight.
Install a pressure relief valve in the pumping system.
12. Replace (5) “O” rings on (4) sleeves and assemble (4) sleeves into
(10)cylinder. NOTE:Assembleeachsleeveintotheendofthecylin-
der nearest the exhaust hole.
Replacement warning label (pn 94520) is available upon request.
13. Replace (6 and 9) “O” rings and (8) “U” cups on (7) spools and as-
semble (7) spools into (10) cylinder from the opposite end as the (4)
sleeve went in.
14. Assemble (10) cylinder onto the pump, being careful when sliding
over the lips of (20) “U” cups. NOTE: Be sure (3) gasket is seated
properly.
15. Replace (3) gasket on (2) upper cap and assemble (2) upper cap to
(10) cylinder.
16. Assemble (1) bolts to pump, securing with (36) nuts. NOTE: Torque
(36) nuts evenly to 80 in. lbs (9 Nm).
PUMP DISASSEMBLY
NOTE:Allthreadsarerighthand.Refertofigure2(page3).Discon-
nect air supply and relieve all system pressure prior to servicing.
Carefullyremovetheparts,inspectfordamage, nicksorexcessivewear
and determine if any parts will need replacement.
1. Using a 7/8” wrench, unthread and remove (12) adapter and (11 and
13) “O” rings, releasing (15) muffler housing.
2. Using a 7/16” wrench, remove (36) nuts.
17. Replace (11 and 13) “O” rings on (12) adapter.
18. Assemble (16) foam liners and (17) edge trims to (15) muffler hous-
ing.
3. Remove four (1) bolts, (2) upper cap and (3) gasket.
4. Remove (10) cylinder, containing (4) sleeves and (7) spools.
5. Using (1) bolt, push (7) spools and (4) sleeves out “sleeve” end of
(10) cylinder.
19. Assemble (15) muffler housing to (10) cylinder, securing with (12)
adapter. NOTE: Torque (12) adapter to 80 in. lbs (9 Nm).
6. Pull up on (21) piston and (22) lower cap, allowing access to (25)
bushing.
7. Using a 1-5/8” wrench, unthread (25) bushing and pull (28) piston
rod and components from pump.
TROUBLE SHOOTING
8. Clamponflatsof(28)pistonrodinavise.Usingan11/16”wrenchon
flats of (30) cup follower, unthread and remove from (28) piston rod.
9. Clamp on flats of (30) cup follower in a vise. Using a 1-1/2” wrench,
unthread and remove (34) inner check seat, releasing (32) washer,
(33) ball and (31) piston cup.
If the pump will not cycle or will not deliver material.
• Becertaintocheckfornon-pumpproblemsincludingkinked,restric-
tiveorpluggedinlet/outlethoseordispensingdevice.Depressurize
the pump system and clean out any obstructions in the inlet / outlet
material lines.
10. Remove (25) bushing from (28) piston rod.
• Check all seals, including track gaskets.
11. Remove (24) “O” ring and (26) packing from (25) bushing.
• Check direction of “U” cup lips.
PN 97999-1134
LM2305A-X-B
Page 4 of 4
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