GENERAL PARTS IDENTIFICATION
identification of the specific unit. The Model Number must
be used when ordering Parts Lists which contain specific
The first two (2) digits identify the series (20 through 27
The next digit identifies the unit type.
2 = Variable Displacement Pump
3 = Fixed Displacement Motor
4 = Variable Displacement Motor
The last three (3) digits specifically identify such items as
control, shaft, pressure settings, rotation, etc., in the
records maintained by Sundstrand.
The Sundstrand Serial Number can be used to identify
design configuration, build date, and units sequence in
The first two (2) digits are termed the dash number and are
used to identify significant configuration changes (product
interchangeability of parts are identified with a dash
The Serial Number provides Sundstrand with a tool to
further identify a unit and should be included in
communications regarding the servicing of the unit.
Parts kits are available from Sundstrand which contain all
the parts necessary for replacement. The following kits are
available, see parts list for specific model parts lists for kit
Other kits are available on specific models.