PART NO. A-70228295. Coupling, Pinion Shaft (SN 13291 > ). Replaces 70225833. MODELS: Allis-Chalmers TRACTOR: CA (SN 13291 > ) Allis-Chalmers TRACTOR: D10 Allis-Chalmers TRACTOR: D12 Allis-Chalmers TRACTOR: D14 Allis-Chalmers TRACTOR: D15 . Pk size: 1.