OPERATOR’S MANUAL
66301-XXX
RELEASED: 12-15-95
INCLUDING: SERVICE KITS, TROUBLESHOOTING, PARTS LIST,
DISASSEMBLY & REASSEMBLY.
REVISED:
(REV. E)
6-2-10
TWO-BALL STYLE
LOWER PUMP ENDS
Also covers 637306-X43 service kits
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
LOWER PUMP END DESCRIPTION CHART
Use only genuine ARO® replacement parts to assure com-
patible pressure rating and longest service life.
637306-X43 for general repair of 66301-XXX lower pump
ends.
66301 - X X X
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Packing Material
3 - Glass filled PTFE (upper and lower)
C - UHMW-PE (upper and lower)
G - UHMW-PE / Leather staggered (upper and lower)
P - UHMW-PE / Glass filled PTFE staggered (upper)
- UHMW-PE (lower)
GENERAL DESCRIPTION
R - Glass filled PTFE / UHMW-PE staggered (upper)
- Glass filled PTFE (lower)
WARNING DO NOT EXCEED MAXIMUM OPERATING
PRESSURE AS INDICATED ON PUMP MODEL PLATE.
WARNING REFER TO GENERAL INFORMATION SHEET
FOR ADDITIONAL SAFETY PRECAUTIONS AND IMPOR-
TANT INFORMATION.
Spring Arrangement
4 - Multiple wave spring with 316 stainless steel balls
7 - Multiple wave spring with 440 stainless steel balls
This manual only covers the lower pump section. It is one
of four documents which support an ARO pump. Replace-
ment copies of these forms are available upon request.
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Plunger Type
3 - Hardened stainless steel with hard chrome plating
B - Hardened stainless steel with ceramic coating
650XXX-X Pump Model Operator’s Manual.
General Information for Air Operated or Hydraulically
Operated Pumps.
Lower Pump End Operator’s Manual.
Air or Hydraulic Motor Operator’s Manual.
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Service Kit Selection
66301 - X X X
637306 - X 4 3
Packing
:
ꢀ
Example: Lower Pump End # 66301-C43
Service Kit # 637306-C43
The two-ball design provides better priming of the lower
foot valve. The double acting feature is standard in all
ARO industrial pumps. Material is delivered to the pump
discharge outlet on both the up and down stroke.
TROUBLE SHOOTING
No material at outlet (pump continually cycles).
Check material supply. Disconnect or shut off the air sup-
ply and replenish the material, reconnect.
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MAINTENANCE
The air / hydraulic motor is completely separate from the
lower pump end. This helps to keep the motor from being
contaminated by the material being pumped. Periodically,
flush entire pump system with a solvent that is compatible
with the material being pumped.
Keep solvent cup filled with this compatible solvent. This will
keep material from drying on the piston rod, which would
drag thru the packings, ruin them and eventually scour the
piston rod.
Provide a clean work surface to protect sensitive internal
moving parts from contamination from dirt and foreign mat-
ter during disassembly and reassembly.
Before reassembling, lubricate parts as required. When as-
sembling “O” rings, or parts adjacent to “O” rings, exercise
care to prevent damage to “O” rings and “O” ring groove sur-
face.
Material on one stroke only (fast downstroke).
The (21) lower ball may not be seating in the (22) seat (see
lower pump disassembly). Remove the ball from the seat,
clean and inspect the ball and seat area. If the ball or seat
is damaged, replace.
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Material on one stroke only (fast upstroke).
Check for worn or damaged packings and seals. Replace
the packings and seals as necessary.
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Material leakage out of the solvent cup or material ap-
pears on the pump plunger rod.
Relieve the pressure in the pump and tighten the solvent
cup until leakage discontinues. If this procedure does not
aid in stopping the leakage problem, the upper packings
may be worn (see lower pump disassembly). Replace the
packings as necessary.
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INGERSOLL RAND COMPANY LTD
209 NORTH MAIN STREET – BRYAN, OHIO 43506
(800) 495-0276 FAX(800) 892-6276
© 2010
CCN 99434599
PARTS LIST / 66301-XXX
ARO® is a registered trademark of Ingersoll Rand Company
Loctite® is a registered trademark of Henkel Loctite Corporation
271™ and Primer T™ are trademarks of Henkel Loctite Corporation
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ꢂ 1
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77
51
ꢁ 74
6
51
53
43
8
1 - 11-1/2 N.P.T.F. - 1
8
) TORQUE REQUIREMENTS (
NOTE: DO NOT OVERTIGHTEN COMPONENTS.
Apply Lubriplate® Super FML-2 grease to threads.
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Torque: (74) to 150 ft lbs. min. (203.4 Nm).
(9), (15), (70) to 300 ft lbs. min. (406.8 Nm).
(33) to 20 ft lbs. min. (27.12 Nm).
LUBRICATION / SEALANTS
Keep solvent cup filled with a lubricant such as Wet Sol
"Plus" or equivalent.
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c
d
Clean threads with Loctite® Primer T™, apply Loctite 271™.
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ꢁ 33
27
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57
55
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28
55
ꢀ 36
8
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21
15 ꢃ
23
22
2 - 11-1/2 P.T.F. SAE Short (male)
1 - 11-1/2 N.P.T.F. - 1 (female)
ꢁ 70
Figure 1
66301-XXX (en)
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PN 97999-647
66301-XXX (en)
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