
23
EATON
620 Mobile Open Circuit Piston Pump Service Manual E-PUPI-TS018-E2 November 2017
General information
Ordering replacement parts
Required tools
Standard tools for
disassembly
Special tools
When ordering replacement
parts, give the product
number, date code, Part
number and quantity of
parts required . This product
information is found on name
tag which is located on the
side of the housing .
When Eaton Model 620
pressure, pressure-flow
compensated piston pump
is repaired, thoroughly clean
pump before any repairs are
attempted .
The Part number and serial
number are on the tag .
Read this assembly manual thoroughly before starting
work on the pump
This manual assumes appropriately trained technicians with
specialized knowledge of mechanical and hydraulic compo-
nent assembly and disassembly
Replacement parts
• Ball peen hammer
• Plastic tip hammer
• Flat tip screw driver
• Snap ring pliers
• Torque wrench
• Magnet stick
• 11/16” Wrench
• 1-3/8” Wrench
• 4 mm allen wrench
• 3/32” Allen wrench
• Impact driver
• Slide hammer for
bearing removal
• Dial indicator and
accessories
• Marker or paint pen
• Petroleum jelly
• Cleaning solvent
Serial number/date code interpretation
Eaton product number or
customer number
Serial number/date code
Complete model code or
model code up to rotation
if requested (no bar code)
Parts list revision level
Assembled in Mexico
SERIAL NUMBER/DATE CODE INTERPRETATION
08 02 17 RC 1010
Serial Number
Manufacturing Plant - Reynosa, MX
Year Built
Day of Month
Month
• Swashplate hold down plug
4999331-001
• Swashplate locator tool kit
9900773-001
• Assembly tool kit for 620 pump 9900773-000