Filter
Top Products
CCN 15262132
OPERATOR’S MANUAL 6737X-XXX
INCLUDING: SERVICE KITS, TROUBLESHOOTING, PARTS LIST,
DISASSEMBLY & REASSEMBLY.
RELEASED: 2-2-09
REVISED: 6-3-10
(REV. 02)
TWO-BALL STYLE
LOWER PUMP ENDS
Also covers 637444-XXX 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.
The original language of this manual is English.
SERVICE KITS
Use only genuine ARO® replacement parts to assure compatible
pressure rating and longest service life.
637444-XXX for general repair of 6737X-XXX lower pump ends.
GENERAL DESCRIPTION
WARNING
DO NOT EXCEED MAXIMUM OPERATING PRES-
SURE AS INDICATED ON PUMP MODEL PLATE.
WARNING
REFER TO GENERAL INFORMATION SHEET FOR
ADDITIONAL SAFETY PRECAUTIONS AND IMPORTANT IN-
FORMATION.
This manual covers the lower pump section. It is one of four
documents which support an ARO pump. Replacement copies
of these forms are available upon request.
NMXXXXX-XX-XXX Pump Model Operator’s Manual.
General Information for Air / Hydraulically Operated Piston
Pumps.
Lower Pump End Operator’s Manual.
Air / Hydraulic Motor Operator’s Manual.
The two-ball design provides better priming of the lower foot
valve. The double acting feature is standard in all ARO indus-
trial pumps. Material is delivered to the pump discharge outlet
on both the up and down stroke.
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 lled with this compatible solvent. This will keep
the material from drying on the piston rod, which would drag
through 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 matter during dis-
assembly and reassembly.
Before reassembling, lubricate parts as required. When assembling
“O” rings, or parts adjacent to “O” rings, exercise care to prevent
damage to “O” rings and “O” ring groove surface.
LOWER PUMP END DESCRIPTION CHART
Figure 1
6737 X - X X X
Service Kit Selection
Example: Lower Pump End # 67371-C6D
Service Kit # 637444-C6D
6737X - X X X
Packing Spring
637444 - X X D
Packing Material
C - UHMW-PE (upper and lower)
K - Carbon and Graphite lled PTFE with nitrile ener-
gizer (upper and lower)
L - Mineral lled PTFE (upper and lower)
P - UHMW-PE / Mineral lled PTFE staggered (upper)
UHMW-PE (lower)
R - Mineral lled PTFE / UHMW-PE staggered (upper)
Mineral lled PTFE (lower)
Plunger Type
D - Hardened stainless steel with hard chrome plating
F - Stainless steel with hard chrome plating
Spring Arrangement
3 - No spring
6 - Wave spring
8 - No spring with alternate solvent cup
C - No spring with alternate seat material
D - Wave spring with alternate seat material
E - Wave spring with alternate solvent cup
F - No spring with alternate seat material and alternate
solvent cup
G - Wave spring with alternate seat material and alternate
solvent cup
Pump Material
1 - 400 series stainless steel
2 - 300 series stainless steel
INGERSOLL RAND COMPANY LTD
209 NORTH MAIN STREET – BRYAN, OHIO 43506
(800) 495-0276 FAX(800) 892-6276
© 2010
www.ingersollrandproducts.com