Parts most commonly requiring replacement are found on this list. The referenced key numbers and part numbers are found in Cincinnati Service Manual and Parts List Catalog M-1536, published 1947, for which we can furnish a copy:

Unit No. 9AC Column
Key No.	Part No.	Part Name
9AC-18	76936	Gear-Large B.G. Shaft
9AC-24	75756	Gear-Sliding
9AC-25	76937	Gear-Small B.G. Shaft
9AC-28	75759	Gear
9AC-29	75755	Gear
9AC-38	77072	Gear-2nd Drive Shaft
9AC-44	75782	Gear-Bevel 1st Drive Shaft
9AC-45	77071	Gear-Sliding 1st Drive Shaft
9AC-49	76142	Spool-Clutch Drive Shaft
9AC-60	75785	Clutch-Twin Disc
9AC-83	76154	Arbor Support Type B Outer
9AC-85	3697	Bushing-Arbor Support Adjusting
9AC-86	3972	Nut-Bushing
9AC-88	76152	Arbor Support Type B Inner
9AC-89	76153	Arbor Support Type A, Small
9AC-90	3695	Bushing-Arbor Support
9AC-91	3692	Screw-Support, Small
9AC-93	3849	Disc-Oil Gage
9AC-132	46795	Lever-Starting
9AC-134	64940	Shoe-Fork Clutch Shifter
9AC-147	107274	Dog-Upper Positive Stop
9AC-148	107273	Dog-On Column
9AC-149	107275	Dog-Lower Positive Stop
9AC-151	76130	Nut-Vertical Screw
9AC-153	44355	Screw-Vertical
9AC-163	75781	Gear-Bevel Pinion
9AC-167	38321	Shoe-Shifter Speed Change
9AC-191	56329	Bolt-Arbor Draw-In
Unit No. 9AH Saddle-Table
Key No.	Part No.	Part Name
9AH-4	39605	Gib-For Table
9AH-5	35942	Screw-Gib
9AH-6	100429	Dog-End Stop
9AH-7	71902	Dog-Feed Left Hand
9AH-8	71901	Dog-Feed Right Hand
9AH-10	5844	Crank-Ball
9AH-11	36548	Clutch-Table Feed Crank
9AH-12	33744	Spring
9AH-13	38125	Clutch
9AH-16	56694	Apron-Front
9AH-17	75620	Screw-Lead
9AH-22	77190	Apron-Back
9AH-24	78072	Cover-Back Apron
9AH-35	78755	Body-Pump
9AH-36	77527	Strainer
9AH-42	61473	Gear-Mitre
9AH-46	76916	Cover-Bracket Under Saddle
9AH-48	71977	Gib-For Saddle
9AH-50	38427	Dog-Cross Feed
9AH-57	77652	Bracket-Cross Feed Nut
9AH-58	79722	Lever-Clamping
9AH-64	75615	Lever-Detent
9AH-83	78907	Lever
9AH-86	76795	Gear-Bevel on Lead Screw
9AH-87	75605	Clutch-Lead Screw
9AH-88	76797	Sleeve-Lead Screw Clutch
9AH-89	75600	Gear-Attachment Driving
9AH-90	76796	Gear-Bevel on Lead Screw
9AH-91	76800	Gear-Stem Bevel
9AH-93	61476	Gear-On Stem Bevel Gear
9AH-101	78258	Lever-Table Feed
9AH-103	71984	Bracket-Under Saddle
9AH-111	75605	Clutch-Lead Screw
9AH-112	75615	Lever-Detent
9AH-133	75623	Sleeve-Lead Screw Clutch
9AH-135	75603	Gear-Bevel on Lead Screw
9AH-136	75624	Gear-Clutch Sleeve
9AH-138	75604	Clutch-Lead Screw Sleeve
9AH-139	75606	Sleeve-Lead Screw
9AH-140	62018	Nut-On Lead Screw
9AH-142	38239	Gear-Stem
9AH-144	61476	Gear-On Stem Bevel Gear
9AH-145	35942	Screw-Gib
9AH-146	71977	Gib-For Saddle
9AH-150	75602	Gear-Stem Bevel
9AH-168	78258	Lever-Table Feed
9AH-171	71983	Bracket-Under Saddle
Unit No. 9AF Feed Box
Key No.	Part No.	Part Name
9AF-1	115125	Shaft-3rd Feed
9AF-4	66001	Gear-Sliding, 3rd Feed Shaft
9AF-8	50810	Gear-Safety
9AF-15	66000	Gear-2nd Feed Shaft
9AF-16	50811	Gear-Back, 2nd Feed Shaft
9AF-29	61482	Clutch-Reverse
9AF-33	42078	Tube-3rd Telescopic
9AF-34	42079	Tube-2nd Telescopic
9AF-35	52779	Guard-Small Telescope
9AF-36	76784	Gear-Bevel, 1st Feed Shaft
9AF-39	50813	Gear-Sliding,1st Feed Shaft
9AF-73	75690	Lever-Feed Shifter C
9AF-75	50803	Gear-Vertical Feed
9AF-76	50804	Gear-Reverse Shaft
9AF-77	65873	Gear-Vertical Shaft
9AF-78	65874	Gear-Reverse Shaft
Unit No. 9AK Knee
Key No.	Part No.	Part Name
9AK-2	74560	Gear-Bevel on Vertical Screw
9AK-8	38415	Gear-Clutch on Clutch Sleeve
9AK-10	41968	Nut-Cross Feed Screw
9AK-15	38125	Clutch
9AK-18	36548	Clutch-Table Feed Crank
9AK-19	75729	Wheel-Hand Cross Screw
9AK-20	3502	Handle
9AK-22	61455	Gear-Clutch on Bevel Gear Bushing
9AK-25	38383	Gear-Stem Bevel
9AK-27	38359	Gear-Bevel on Elevating Shaft
9AK-30	61458	Gear-Intermediate
9AK-40	79725	Gear-Driver Rapid Traverse
9AK-41	75898	Plate-Driving
9AK-42	100191	Retainer-Clutch Plate
9AK-43	79719	Fork-Clutch
9AK-46	100192	Hub-Twin Disc Clutch
9AK-49	79726	Plate-Driven
9AK-50	75899	Plate-Driven
9AK-53	75733	Gear-Sliding
9AK-72	75713	Lever-Hand Rapid Traverse
9AK-88	77631	Screw-Cross Feed
9AK-91	56426	Crank
9AK-92	77630	Shaft-Spline
9AK-112	38395	Gib
9AK-121	95094	Body-Pump
Unit No. 9AS Gear Shifter Bracket
Key No.	Part No.	Part Name
9AS-3	76963	Lever-Center Speed Change
9AS-13	69300	Shoe-Back Gear Shifter
9AS-23	76716	Bracket-Gear Shifter
9AS-33	75932	Gear-Bevel
9AS-36	42078	Tube-Third Telescopic
9AS-37	42079	Tube-Second Telescopic
9AS-38	52779	Guard-Small Telescopic
9AS-40	50897	Shaft-Vertical Feed
Unit No. 9AP Centrifugal Pump
Key No.	Part No.	Part Name
9AP-10	42099	Gear-Driver
9AP-12	58166	Cover-Pump Body
9AP-19	56021	Impeller-Pump
9AP-20	72986	Body-Pump
9AP-22	58165	Gear-Driven Impeller
9AP-23	51546	Tube-Small Telescopic
9AP-24	42079	Tube-2nd Telescopic
9AP-25	42078	Tube-3rd Telescopic
9AP-26	42081	Tube-Large Telescopic