ARO LM2350E-32-B, LM2350E-21-B, LM2350E-31-B, LM2350E-22-B, LM2350E-41-B Operator's Manual

OPERATOR’S MANUAL LM2350E-X-B

INCLUDING: SPECIFICATIONS, SERVICE KITS, GENERAL INFORMATION, PARTS, TROUBLESHOOTING

INCLUDE MANUAL: S-632 GENERAL INFORMATION (PN 97999-624)

RELEASED:
REVISED:
(REV.

N)

8-14-98
10-2-15

3” AIR MOTOR
50:1 RATIO
0 - 7500 P.S.I. RANGE

CHOP-CHECK GREASE PUMP

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

x Use only genuine AROR replacement parts to assure compatible

pressure rating and longest service life.

x 637227-B Pump Rebuild Kit. Includes thenecessarysoft parts for

normal service of the entire pump.

SPECIFICATIONS

Model Series LM2350E-XX-B....................

Type Air Operated, Chop-Check.......................

Grease Pump

Ratio 50:1..........................

Air Motor Diameter 3” (7.62 cm)...............

Stroke (Double Acting) 3” (7.62 cm)...........

Air Inlet (female)

LM2350E-X1-B 1/4 - 18 N.P.T.F. - 1...............

LM2350E-X2-B Rp 1/4 (1/4 - 19 BSP Parallel)............

Material Outlet (female)

LM2350E-X1-B 3/8 - 18 N.P.T.F. - 1.................

LM2350E-X2-B Rc 3/8 (3/8” - 19 BSP Taper)..............

Pump Construction Carbon Steel...............

Dimensional Data see chart................

Weight see chart.........................

PERFORMANCE

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 135.
Displacement In

Volume / Cycle 0.48 oz. (14.33 ml)...................

Cycles Per Lb. 30...................

Maximum Delivery / Min. 7.5 lbs (3.4 kg)...........

Noise Level @ 100 p.s.i. 85 db(A)*............

Accessories Available 61113 Wall Mount Bracket........

* Thepump sound pressure level has been updated to an Equivalent Continuous Sound

Level (L

Aeq

microphone locations.

3

Per Cycle 0.875.........

-1 Air Line Connection Kit

66073

) to meet the intent of ANSI S1. 13-1971, CAGI-PNEUROP S5.1 using four

GENERAL DESCRIPTION

Model LM2350E-X-B Series chop-check grease pump is intended to be
used primarily for grease delivery systems. It uses carbon steel and oth­er materials which make it compatible with most petroleum based lu­brication products.
NOTE: If this pump was purchased separately (not part of a system),
consult your sales representative for compatible dispensing accesso­ries which will best match the application. All accessories must be able
to withstand the maximum pressure developed by the pump.

LM2350E-XX-B

PUMP DATA

MODEL LM2350E-XX-B

Air Inlet (female)

See “Specifications”

1-1/4”

(31.8 mm)

‘‘A”

‘‘B”

NOTE:Dimensions are shown in inches and (mm), supplied for reference only and are typical-

ly rounded up to the nearest 1/16 inch.

Model Number "A"

LM2350E-21-B 27-3/4" (704.2) 16-9/16" (420.6) 18.0 lbs (8.16)
LM2350E-22-B 27-3/4" (704.2) 16-9/16" (420.6) 18.0 lbs (8.16)
LM2350E-31-B 38-7/16" (975.7) 27-1/4" (692.1) 21.9 lbs (9.94)
LM2350E-32-B 38-7/16" (975.7) 27-1/4" (692.1) 21.9 lbs (9.94)
LM2350E-41-B 48" (1218.6) 36-13/16" (935.0) 25.4 lbs (11.52)
LM2350E-42-B 48" (1218.6) 36-13/16" (935.0) 25.4 lbs (11.52)
LM2350E-61-B 30-1/2" (774.1) 19-5/16" (490.5) 19.0 lbs (8.62)
LM2350E-71-B 40-1/2" (1028.1) 29-5/16" (744.5) 22.7 lbs (10.28)
LM2350E-81-B 49" (1244.0) 37-13/16" (960.4) 25.8 lbs (11.68)

(mm)

"B"

IMPORTANT
This is one of two documents which support the pump. Replace­ment copies of these forms are available upon request.

= LM2350E -X-B MODEL OPERATOR’S MANUAL

- S-632GENERAL INFORMATION LUBRICATIONPISTON PUMPS

WARNING

READ THE GENERAL INFORMATION MANUAL

INCLUDED FOR ADDITIONAL OPERATING AND SAFETY PRE­CAUTIONS AND OTHER IMPORTANT INFORMATION.

Material Outlet (female)

See “Specifications”

2-11-1/2 N.P.S.M. Bung Adapter
(not included with LM2350E-6

X-B)

Figure 1

5/16” (8 mm) Thru hole

(mm) Weight (kg)

INGERSOLL RAND COMPANY LTD

209 NORTH MAIN STREET – BRYAN, OHIO 43506

[phone]  FAX [phone]



arozone.com

© 2015

CCN 99762585

PARTS LIST / LM2350E-XX-B

Item Description (size in inches) Qty Part No. [Mtl] Item Description (size in inches) Qty Part No. [Mtl]

1 Carriage Bolt (1/4” - 20 x 9” long) (4) 94333 [C]
2 Upper Cap (1) 94390 [Z]

n 3 Track Gasket (2) 94392 [B]

4 Sleeve (2) 94316 [Br]

n 5 “O” Ring (1/16” x 11/16” o.d.) (4) Y325-15 [B]
n 6 “O” Ring (1/8” x 3/4” o.d.) (4) Y325-206 [B]

7 Spool (2) 94310 [D]

n 8 “U” Cup (1/8” x 3/4” o.d.) (2) Y240-7 [B]
n 9 “O” Ring (.106” x .587” o.d.) (2) 15066-PM [B]

10 Cylinder (1) 94306 [A]
11 Adapter models LM2350E-X1-B (1) 94384 [C]

models LM2350E-X2-B (1) 94384-1 [C]

n 12 “O” Ring (1/16” x 3/4” o.d.) (1) Y325-16 [B]
n 13 “O” Ring (1/16” x 7/16” o.d.) (1) Y325-11 [B]

14 Muffler Housing (1) 94443 [A]
15 Foam Liner (2) 94402
16 Edge Trim (2) 94378-1 [N]
18 Retaining Ring (1) 94406 [C]
19 Washer (1) 94515 [C]

n 20 “U” Cup (3/16” x 3” o.d.) (2) 94518 [B]

21 Piston (1) 94403 [D]
23 Piston Adapter (1) 94388 [C]

n 24 “O” Ring (3/32” x 1” o.d.) (1) Y325-117 [B]

25 Dowel Pin (1/4” o.d. x 7/8” long) (1) Y148-37 [C]
26 Washer (1) 94785 [C]

n 27 “O” Ring (3/32” x 11/16” o.d.) (1) Y325-112 [B]

28 Spring (1) 94705 [C]

n 29 Rod Seal (1) 93921 [U]

30 Base models LM2350E-X1-B (1) 67188 [C/Z]

models LM2350E-X2-B (1) 67188-1 [C/Z]

31 Nut (1/4” - 20) (4) 93828 [SS]
32 Ground Screw (#10 - 32 x 1/4”) (1) 93005 [C]

n 33 Gasket (1) 70834 [Co]

34 Extension Tube

- LM2350E-2X-B (7.531’’) (1) 94401-2 [C]

- LM2350E-3X-B (20.281’’) (1) 94401-3 [C]

- LM2350E-4X-B (28.781’’) (1) 94401-4 [C]

n 35 Gasket (1) 70837 [Co]

36 Piston Rod (1) 94385 [C]
37 Pin (1) 94786 [C]

n 38 Cotter Pin (1/16” x 1/2” long) (1) Y15-21 [C]

39 Connector - LM2350E-2X-B (3.457”) (1) 94340-2 [C]

40 Lower Suction Tube (1) [C]
41 Plunger (1) [C]
42 Ball Stop (1) 83276 [C]
43 Ball (9/32” dia.) (1) Y16-209 [C]
44 Adapter (1) 70817-11 [C]

n 45 Guide Washer (1) 71524-1 [Co]

46 Spacer (1) 72392-1 [C]
47 Retaining Ring (.763” o.d.) (1) Y147-68 [C]
48 “U” Cup (3/16” x 11/16” o.d.) (1) Y186-4 [B]
49 Guide Spacer (1) 76705 [T]
50 Valve Body (1) 76704 [SH]

n Foot Valve Ass’y (includes 47 - 50) (1) 60940

n 51 Gasket (1) F21-65 [Co]

52 Valve Seat (1) 6797 [C]
53 Primer Rod (1) 94446 [C]

n 54 Retainer Ring (1) 94397 [C]

55 Primer (1) 94400 [C]
56 Primer Tube (1) 94399 [C]

: 57 Bung Assembly (includes 58) (1) 67145-2 [ZA]
: 58 Thumb Screw (1/4”-20x1”) (3) Y66-59-C [C]

: Not included with models LM2350E-6X-B
n Gadus S2 U1000 Grease Packet
n Parts in Repair Kit 637227-B

- LM2350E-6X-B (10.281’’) (1) 94401-6 [C]

- LM2350E-7X-B (18.531’’) (1) 94401-7 [C]

- LM2350E-8X-B (27.781’’) (1) 94401-8 [C]

- LM2350E-3X-B (14.145”) (1) 94340-3 [C]

- LM2350E-4X-B (23.707”) (1) 94340-4 [C]

- LM2350E-6X-B (6.207”) (1) 94340-6 [C]

- LM2350E-7X-B (16.207”) (1) 94340-7 [C]

- LM2350E-8X-B (24.707”) (1) 94340-8 [C]

Piston & Tube Ass’y (includes 40 - 44) (1) 71523-1

(1)

94833

OPERATING AND SAFETY PRECAUTIONS

WARNING

plosion resulting in severe injury or death. Do not exceed maxi­mum operating pressure of 7500 p.s.i. (517.2 bar) at 150 p.s.i.
(10.3 bar) inlet air pressure. Do not run pump without using a
regulator to limit air supply pressure to the pump.

WARNING

equipment failure resulting in severe injury or property dam­age. Do not exceed the maximum material pressure of any
component in the system.

Replacement warning label is available upon request, PN \ 94520.

Page 2 of 4

EXCESSIVE INLET PRESSURE. Can cause ex-

EXCESSIVE MATERIAL PRESSURE. Can cause

INLET PRESSURE TO PUMP MOTOR

PUMP RATIO X

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 50:1 ratio pump it will develop a maximum of 7500 p.s.i.
(517.2 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.

MAXIMUM PUMP

=

FLUID PRESSURE

NOTICE: Thermal expansion can occur when the fluid in the materi­al 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.

LM2350E-X-B

PARTS LIST / LM2350E-XX-B

16

33

34 ,

13

12

. 11

14

15

16

7

2

8

9

5

3

4

35

40 ,

10

36

37

38

39 ,

9

5

4

8

7

41

18

MATERIAL CODE

[A] = Aluminum
[B] = Nitrile
[Br] = Brass
[C] = Carbon Steel
[Co] = Copper
[D] = Acetal
[N] = Neoprene
[SH] = Hard Stainless Steel
[SS] = Stainless Steel
[T] = PTFE
[U] = Polyurethane
[Z] = Zinc
[ZA] = Zinc / Aluminum Alloy

19

20

21

20

23

25

32

. TORQUE REQUIREMENTS ,

(11) 80 in. lbs (9 Nm) maximum
(31) 80 in. lbs (9 Nm) minimum

(34, 40, 56) 65 ft lbs (88.1 Nm) minimum

(39) 17 - 25 ft lbs (23.0 - 33.9 Nm)
(44) 50 - 70 ft lbs (67.8 - 94.9 Nm)

(53) 70 - 100 in. lbs (7.9 - 11.3 Nm)

6

42

43

44 ,

45
46

47

49

51

24

48

50

52

53 ,

27

3

31 ,

54

55

56 ,

30

29

26

58

28

57

Figure 2

LM2350E-X-B Page 3 of 4

PUMP DISASSEMBLY

NOTE: All threadsare right hand. Refer to figure 2 (page 3). Discon­nect air supply and relieve all system pressure

Carefully remove theparts, inspect for damage, nicks or excessive wear
and determine if any parts will need replacement.

1. Using a 7/8” wrench, unthread and remove (11)adapterand (12 and

13) ‘‘O” rings, releasing (14) muffler housing.

2. Using a 7/16” wrench, remove (31) 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 (18) retaining ring, (19) washer and (21) piston.

7. Remove (25) dowel pin, releasing (23) piston adapter.

8. Remove (3) gasket.

9. Clamp (34) extension tube horizontally in a vise. Unthread and re­move (30) base, (33) gasket, (28) spring and (26) washer. NOTE:
Remove (29) rod seal only if replacement is necessary.

10. Pull up on (36) piston rod to reveal (38) cotter pin.

11. Remove (38) cotter pin and (37) connecting pin, releasing (36) pis­ton rod.

12. Using (36) piston rod, push down on (39) connector until it bottoms.

13. Remove (54) retainer ring.

14. Push (55) primer up into (56) primer tube.

15. Lightly wedge a flat blade screwdriver between (55) primer and (56)
primer tube, so (55) primer unthreads with (56) primer tube.

16. Insert a 5/16” diameter rod thru the cross holes in (56) primer tube
and use the rod to unthread and remove (56) primer tube.

17. Remove (46) spacer,(51) gasket and (52) valve seat from (56) prim­er tube.

18. Remove (47 - 50) foot valve assembly from (53) primer rod.

19. Remove (47) retaining ring, releasing (48) “U” cup. NOTE: Do not
remove (49) guide spacer unless replacement is necessary.

20. Remove (45) guide washer.

21. Clamp (40) lower suction tube horizontally in a vise. Unthread and
remove (34) extension tube and (35) gasket.

22. Using a 7/32” diameter rod in the cross hole in (39) connector and a
9/16” wrench on the flats of (41) plunger,unthread and remove (39)
connector from (41) plunger. NOTE: Do not damage the o.d. of (41)
plunger in any way.

23. Using a 7/16” wrench on flats of (44) adapter and a 1/4” wrench on
flats of (53) primer rod, unthread and remove (53) primer rod.

24. Clamp on flats of (41) plunger and, using a 1/4” wrench on flats of
(44) adapter,unthread and remove (44) adapter, releasing (43) ball
and (42) ball stop.

prior to servicing.

PUMP REASSEMBLY

3. Thread (39) connector to (41) plunger, using a 7/32” diameter rod
thru the cross hole to tighten. NOTE: Tighten (39) connector to 17 ­25 ft lbs (23.0 - 33.9 Nm).

4. Assemble (49) guide spacer and (48) “U” cup into (50) valve body,
securing with (47) retaining ring. NOTE: Assemble chamfered cor­ner of (49) guide spacer into (50) valve body first.

5. Assemble (45) guide washer and (47 - 50) foot valve assembly onto
(53) primer rod.

6. Assemble (46) spacer, (51) gasket and (52) valve seat onto (53)
primer rod.

7. Thread (55) primer onto (53) primer rod, securing with (54) retainer
ring.

8. Thread (56) primer tube to (40) lower suction tube and tighten.
NOTE: Torque (56) primer tube to 65 ft lbs (88.1 Nm).

9. Assemble (36) piston rod to (39) connector, securing with (37) con­necting pin and (38) cotter pin.

10. Assemble (35) gasket and (34) extension tube to (40) lower suction
tube and tighten.NOTE: Torque(34) extension tubeto 65 ft lbs (88.1
Nm).

11. Assemble (27) “O” ring, (29) rod seal, (26) washer, (28) spring and
(33) gasket into (30) base and assemble (30) base to (34) extension
tube. Clamp (30) base horizontally in a vise and tighten (34) exten­sion tube. NOTE: Torque (34) extension tube to 65 ft lbs (88.1 Nm).

12. Push up on (55) primer, exposing (36) piston rod.

13. Assemble (3) gasket to (30) base.

14. Assemble (24)“O” ring to (23) piston adapter and assemble (23) pis­ton adapter to (36) piston rod, securing with (25) dowel pin.

15. Replace (20) “U” cups on (21) piston and assemble (21) piston onto
(23) piston adapter, securing with (19) washer and (18) retaining
ring.

16. Replace (5) “O” rings on (4) sleeves and assemble (4) sleeves into
(10) cylinder. NOTE: Assemble each sleeve into the end of the cylin­der nearest the exhaust hole.

17. Replace (6 and 9) “O” rings and (8) “U” cups on (7) spools and as­semble (7) spools into (10) cylinder from the opposite end as the (4)
sleeve went in.

18. 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.

19. Replace (3) gasket on (2) upper cap and assemble (2) upper cap to
(10) cylinder.

20. Assemble (1) bolts to pump, securing with (31) nuts. NOTE: Torque
(31) nuts to 80 in. lbs (9 Nm).

21. Replace (12 and 13) “O” rings on (11) adapter.

22. Assemble (15) foam liners and (16) edge trims to (14) muffler hous­ing.

23. Assemble (14) muffler housing to (10) cylinder, securing with (11)
adapter. NOTE: Torque (11) adapter to 80 in. lbs (9 Nm).

NOTE: Thoroughly clean and lubricate all seals and bores with
Shell Gadus S2 U1000 upon assembly.Replace all soft parts with
new ones included in the repair kit. Note: Refer to the illustration

(figure2, page 3) for “U” cup lip seal direction.

1. Assemble (42) ball stop and (43) ball into (41) plunger, securing with
(44) adapter. NOTE: Torque (44) adapter to 50 - 70 ft lbs (67.8 - 94.9
Nm).

2. Assemble (53) primer rod to (44) adapter,using wrenches on flats to
tighten. NOTE: Torque (53) primer rod to 70 - 100 in. lbs (7.9 - 11.3
Nm).

Page 4 of 4

TROUBLE SHOOTING

If the pump will not cycle or will not deliver material.

x Be certain to check for non-pumpproblems including kinked,restric-

tive or plugged inlet / outlethose or dispensing device. Depressurize
the pump system and clean out any obstructions in the inlet/outlet
material lines.

x Check all seals, including track gaskets.
x Check direction of “U” cup lips.

PN 97999-825

LM2350E-X-B