Parker Denison T7DDS-E38-E31-1R03-A1M0 Hydraulic Pump – 054-50879-003S

Series-specific model code

Original model: T7DDS-E38-E31-1R03-A1M0

Code coverage: Evidence-supported meanings shown. Confirmation required for remaining configuration.

Evidence profile: T7DDS exact single/double/triple ordering-code profile (HY29-0001/UK evidence revision 6)

Code segment	Evidence-bound meaning
T7DDS	Series: T7DDS.
E38	Shaft-end pump core (D family) displacement code: E38. Contact us to confirm.
E31	Cover-end pump core (D family) displacement code: E31. Contact us to confirm.
1	Shaft code 1: keyed SAE C shaft.
R	Rotation: right-hand (clockwise), viewed from the shaft end.
03	Two-character porting code preserved; physical port orientation: 03. Contact us to confirm.
A	Design letter: A.
1	Seal code 1: S1 BUNA N seal class.
M0	Connection/modification code: M0.

The exact longest series prefix determines the number and family of pump-core slots. Displacement codes are decoded only through the family table printed for that slot; identical codes are not generalized across A-AS, A-ASW, B, C, D or E cores. Shaft identity remains tied to the complete series. R/L is interpreted from the shaft-end view. Porting 00 is standard; other catalog-shaped porting codes are retained and require physical-orientation confirmation. Unsupported families and unknown special tails fail closed without blocking earlier evidence-supported fields.