OPERATOR’S MANUAL
LM2250E-X-B
INCLUDING: SPECIFICATIONS, SERVICE KITS, GENERAL INFORMATION, PARTS, TROUBLESHOOTING
INCLUDE MANUAL: S-633 GENERAL INFORMATION (PN 97999-625)
RELEASED:
REVISED:
(REV. K)
6-1-00
6-11-10
2” AIR MOTOR
LM2250E-( )-B
CHOP-CHECK GREASE PUMP
50:1 RATIO
0 - 7500 P.S.I. RANGE
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.
• 637332 Pump Rebuild Kit. Includes the necessary soft parts for
normal service of the entire pump.
MODEL LM2250E-X-B
SPECIFICATIONS
Air Inlet (female)
See “Specifications”
Model Series . . . . . . . . . . . . . . . . . . . . LM2250E-X-B
Type . . . . . . . . . . . . . . . . Air Operated, Chop-Check Grease Pump
Ratio . . . . . . . . . . . . . . . . . . . . . . . . . . 50:1
Air Motor Diameter . . . . . . . . . . . . . . . 2” (5.08 cm)
Stroke . . . . . . . . . . . . . . . . . . . . . . . . . 3” (7.62 cm)
Air Inlet (female)
LM2250E-X1-B . . . . . . . . . . . . . . . 1/4 - 18 N.P.T.F. - 1
LM2250E-X2-B . . . . . . . . . . . . Rc 1/4 (1/4 - 19 BSP Taper)
Material Outlet (female)
1-1/4”
(31.8 mm)
Material Outlet (female)
See “Specifications”
2” N.P.S.M. Bung Adapter
(not included with LM2250E-6X-B)
“A”
LM2250E-X1-B . . . . . . . . . . . . . . . . . . 3/8 - 18 N.P.T.F. - 1
LM2250E-X2-B . . . . . . . . . . . . . . . Rc 3/8 (3/8 - 19 BSP Taper)
Pump Construction . . . . . . . . . . . . . Carbon Steel
Dimensional Data . . . . . . . . . . . . . . . . see chart
Weight . . . . . . . . . . . . . . . . . . . . . . . . . see chart
“B”
Figure 1
PERFORMANCE
5/16” (8 mm) Thru hole
Air Inlet Pressure Range . . . . . . . . . . . 0 - 150 p.s.i. (0 - 10.3 bar)
Fluid Pressure Range . . . . . . . . . . . 0 - 7500 p.s.i. (0 - 517.2 bar)
Cycles / Minute Rec’d @ Working Flow 80
NOTE: Dimensions are shown in inches and (mm), supplied for reference only and are typically
rounded up to the nearest 1/16 inch.
Displacement In3 Per Cycle . . . . . . . . . 0.300
Volume / Cycle . . . . . . . . . . . . . . . . . . . 0.17 oz. (4.91 ml)
Maximum Delivery / Minute . . . . . . . . . 9 lbs (4.1 kg)
Noise Level @ 100 p.s.i. . . . . . . . . . . . . 85 db(A)*
Accessories Available . . . . . . . 61113 Wall Mount Bracket
66073-1 Air Line Connection Kit
MODEL
“A” (mm)
“B” (mm)
WEIGHT (kg)
15 (6.8)
LM2250E-2X-B 27-13/16” (705)
LM2250E-3X-B 40-9/16” (1029)
LM2250E-4X-B 49-1/16” (1245)
16-9/16” (421)
29-5/16” (744)
37-13/16” (960)
19-5/16” (490)
27-9/16” (700)
36-13/16” (935)
19 (8.6)
21.5 (9.8)
15.9 (7.2)
18.3 (8.3)
21.2 (9.6)
LM2250E-6X-B
30-9/16” (775)
LM2250E-7X-B 38-13/16” (985)
LM2250E-8X-B 48-1/16” (1220)
* 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.
IMPORTANT
This is one of two documents which support the pump. Replace-
ment copies of these forms are available upon request.
= LM2250E-X-B MODEL OPERATOR’S MANUAL
GENERAL DESCRIPTION
Model LM2250E-X-B Series chop-check grease pump is intended to be
usedprimarilyforgreasedeliverysystems. Itusescarbonsteelandoth-
er materials which make it compatible with most petroleum based lu-
brication products.
NOTE: If this pump was purchased separately (not part of a system),
consult your sales representative for compatible dispensing accesso-
ries which will best match the application. All accessories must be able
to withstand the maximum pressure developed by the pump.
- S-633 GENERAL INFORMATION LUBRICATION PISTON PUMPS
WARNING READ THE GENERAL INFORMATION MANUAL
INCLUDED FORADDITIONAL OPERATINGAND SAFETYPRE-
CAUTIONS AND OTHER IMPORTANT INFORMATION.
INGERSOLL RAND COMPANY LTD
209 NORTH MAIN STREET – BRYAN, OHIO 43506
(800) 495-0276 FAX(800) 892-6276
CCN 99879389
© 2010
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PARTS LIST / LM2250E-XX-B
30
1
6
31 ,
7
8
9
5
2
32
3
4
37 ,
13
10
12
33
. 11
34
35
36 ,
14
15
9
8
5
4
16
17
18
38
7
MATERIAL CODE
[A] = Aluminum
[B] = Nitrile
[Br] = Brass
[C] = Carbon Steel
[Co] = Copper
[D] = Acetal
6
39
41
40
42
19
[N] = Neoprene
[SH] = Hard Stainless Steel
[SS] = Stainless Steel
[T] = PTFE
[U] = Polyurethane
[Z] = Zinc
[ZA] = Zinc / Aluminum Alloy
43
45
44
46
48
18
20
22
3
47
50
21
23
49 ,
51
52 ,
28 ,
29
27
24
25
26
. TORQUE REQUIREMENTS ,
(11) 80 in. lbs (9.0 Nm) maximum.
(28) 80 in. lbs (9.0 Nm).
(31, 37, 52) 65 ft lbs (88.1 Nm) minimum.
(36) 17 - 25 ft lbs (23.1 - 33.9 Nm).
(49) 70 - 100 in. lbs (7.9 - 11.3 Nm).
54
53
Figure 2
LM2250E-X-B
Page 3 of 4
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3. Assemble(45) guideand(44) “U” cupinto (46) valve body, securing
with (43) retaining ring. NOTE: Assemble chamfered corner of (45)
guide into (46) valve body first.
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 (11) adapter, containing (12
and 13) “O” rings, releasing (14) muffler housing.
2. Using a 7/16” wrench, remove (28) nuts.
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.
6. Remove (16) retaining ring, (17) washer and (19) piston.
7. Remove (22) dowel pin, releasing (20) piston adapter.
8. Remove (3) gasket.
9. Clamp (31) extension tube horizontally in a vise. Unthread and re-
move (27) base, (30) gasket, (26) spring and (25) washer. NOTE:
Remove (24) rod seal only if replacement is necessary.
10. Pull up on (33) piston rod to reveal (35) cotter pin.
11. Remove (35) cotter pin and (34) connecting pin, releasing (33) pis-
ton rod.
12. Using (33) piston rod, push down on (36) connector until it bottoms.
13. Remove (51) retainer ring.
14. Push (50) primer up into (52) primer tube.
15. Lightlywedgeaflat blade screwdriver between(50) primer and (52)
primer tube, so (50) primer unthreads with (52) primer tube.
16. Insert a 5/16” diameter rod thru the cross holes in (52) primer tube
and use the rod to unthread and remove (52) primer tube.
17. Remove(42)spacer,(47)gasketand(48)valveseatfrom(52)prim-
er tube.
18. Remove (43 - 46) foot valve assembly from (49) primer rod.
19. Remove (43) retaining ring, releasing (44) “U” cup. NOTE: Do not
remove (45) guide unless replacement is necessary.
20. Remove (41) guide washer.
21. Clamp (37) lower suction tube horizontally in a vise. Unthread and
remove (31) extension tube and (32) gasket.
22. Using a 7/32” diameter rod in the cross hole in (36) connector and a
9/16” wrench on the flats of (38) plunger, unthread and remove (36)
connector from (38) plunger. NOTE: Do not damage the o.d. of (38)
plunger in any way.
23. Using a 5/32” diameter rod in the cross hole of (49) primer rod and a
9/16” wrench on flats of (38) plunger, unthread and remove (49)
primer rod, releasing (40) ball and (39) ball stop.
4. Assemble (41) guide washer and (43 - 46) foot valve assemblyonto
(49) primer rod.
5. Assemble (42) spacer, (47) gasket and (48) valve seat onto (49)
primer rod.
6. Thread (50) primer onto (49) primer rod, securing with (51) retainer
ring.
7. Thread (52) primer tube to (37) lower suction tube and tighten.
NOTE: Torque (52) primer tube to 65 ft lbs (88.1 Nm).
8. Assemble (33) piston rod to (36) connector, securing with (34) con-
necting pin and (35) cotter pin.
9. Assemble (32) gasket and (31) extension tube to (37) lower suction
tubeandtighten.NOTE:Torque(31)extensiontubeto65ftlbs(88.1
Nm).
10. Assemble (23) “O” ring, (24) rod seal, (25) washer, (26) spring and
(30)gasketinto(27)baseandassemble(27)baseto(31)extension
tube. Clamp (27) base horizontally in a vise and tighten (31) exten-
sion tube. NOTE: Torque (31) extension tube to 65 ft lbs (88.1 Nm).
11. Push up on (50) primer, exposing (33) piston rod.
12. Assemble (3) gasket to (27) base.
13. Assemble(21)“O”ringto(20)pistonadapterandassemble(20)pis-
ton adapter to (33) piston rod, securing with (22) dowel pin.
14. Replace (18) “U” cups on (19) piston and assemble (19) piston onto
(20) piston adapter, securing with (17) washer and (16) retaining
ring.
15. Replace (5) “O” rings on (4) sleeves and assemble (4) sleeves into
(10)cylinder. NOTE:Assembleeachsleeveintotheendofthecylin-
der nearest the exhaust hole.
16. 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.
17. Assemble (10) cylinder onto the pump, being careful when sliding
over the lips of (18) “U” cups. NOTE: Be sure (3) gasket is seated
properly.
18. Replace (3) gasket on (2) upper cap and assemble (2) upper cap to
(10) cylinder.
19. Assemble (1) bolts to pump, securing with (28) nuts. NOTE: Torque
(28) nuts to 80 in. lbs (9 Nm).
20. Replace (12 and 13) “O” rings on (11) adapter.
21. Assemble (15) foam liners to (14) muffler housing.
22. Assemble (14) muffler housing to (10) cylinder, securing with (11)
adapter. NOTE: Torque (11) adapter to 80 in. lbs (9.0 Nm).
PUMP REASSEMBLY
TROUBLE SHOOTING
NOTE: Thoroughly clean and lubricate all seals and bores with
ShellDarina“EP”2uponassembly. Replaceallsoftpartswithnew
ones included in the repair kit. Note: Refer to the illustration (figure 2,
page 3) for “U” cup lip seal direction.
1. Assemble(39)ballstopand(40)ballinto(38)plunger, securingwith
(49)primerrod. NOTE:Torque(49)primerrodto70-100in. lbs(7.9
- 11.3 Nm).
2. Thread (36) connector to (38) plunger, using a 7/32” diameter rod
thru the cross hole to tighten. NOTE: Tighten (36) connector to 17 -
25 ft lbs (23.1 - 33.9 Nm).
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.
• Check all seals, including track gaskets.
• Check direction of “U” cup lips.
PN 97999-914
LM2250E-X-B
Page 4 of 4
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