Parker Denison T7DS-B31-3R00-A400 Hydraulic Pump – 024-90451-4

Series-specific model code

Original model: T7DS-B31-3R00-A400

Code coverage: Evidence-supported selected code meanings identified.

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

Code segment	Evidence-bound meaning
T7DS	Series: T7DS.
B31	Pump core (D family) documented displacement: 99.2 cm3/rev.
3	Shaft code 3: splined SAE C shaft, 12/24 pitch, 14 teeth.
R	Rotation: right-hand (clockwise), viewed from the shaft end.
00	Porting code: 00 (standard porting).
A	Design letter: A.
4	Seal code 4: S4 EPDM seal class.
00	Connection/modification code: 00.

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.