Parker Denison T7DS-E42-1R00-A1MW-NOP Hydraulic Pump – 054-51285-000S

Series-specific model code

Original model: T7DS-E42-1R00-A1MW-NOP

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

Evidence profile: T7DS exact single/double/triple ordering-code profile (HY29-0001/UK evidence revision 6)

Code segment	Evidence-bound meaning
T7DS	Series: T7DS.
E42	Pump core (D family) displacement code: E42. Contact us to confirm.
1	Shaft code 1: keyed SAE C shaft, 31.7 mm nominal diameter.
R	Rotation: right-hand (clockwise), viewed from the shaft end.
00	Porting code: 00 (standard porting).
A	Design letter: A.
1	Seal code 1: S1 BUNA N seal class.
MW	Unresolved value after the documented design/seal fields: MW. Contact us to confirm.
NOP	Special or legacy trailing code: NOP. Contact us to confirm.

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.