Parts most commonly requiring replacement are found on this list. The referenced drawing numbers and part numbers are found in K&T Replacement Parts Manual Publication 98 (former KR-13), for which we can furnish a copy:

Assembly Drawing #4067 Adjustable Vertical Head 19007 Small Spindle Gear 19009 Spindle drive Pinion 19010 Arbor Draw-in Bolt Assembly 19023 Oil Pump Gear-Driver 19024 Oil Pump Gear Stud Assembly Drawing #4078 Vertical Column 19062 Vertical Drive Spiral Bevel Gear-Driver 19063 Vertical Drive Spiral Bevel Gear-Driven Assembly Drawing #4072 Coolant Pump 5348 Coolant Pump Gear-Driver 12263 Coolant Pump Gear-Idler 12264 Coolant Idler Gear Stud Assembly Drawing #4073 Cross Feed Bracket 14441 Cross Feed Bracket 14442 Cross Feed Bracket Bearing 14444 Table Feed Slide Bevel Gear 14445 Table Feed Drive Bevel Gear 14446 Cross Feed Bracket Bearing Sleeve 14458 Tube Nut w/Telescopic Brass Tubes (horizontal mills) Assembly Drawings #4074 and #4075 Feed & Rapid Traverse Takeoff Bracket 3448 Inner Clutch Disc (Steel) 3449 Rapid Traverse Clutch Driven Plate (Bronze) 9424 Oil Pump Gear-Driven 9425 Oil Pump Gear Stud 14750 Feed Drive Bevel Gear 14756 Rapid Traverse Drive Bevel Gear 14757 Rapid Traverse Bevel Gear 18901 Feed Drive Bevel Gear 18906 Feed Miter Bevel Gear 18908 Vertical Feed Drive Idler Gear 18910 Vertical Rapid Traverse Drive Idler Gear 18911 Rapid Traverse Miter Bevel Gear 18913 Rapid Traverse Drive Bevel Gear Assembly Drawing #4076 Feed Distribution Box SG-355 Spring 9564 Feed Dial Lever 12896 Cross and Elevating Hand Feed Clutch 12897 Hand Elevating Crank 12899 Hand Feed Clutch Stop 14598 Feed Change Helical Gear Shaft 14779 Elevating Clutch Gear-Front 14791 Elevating Reverse Clutch 14865 Primary Feed Sliding Gear-Front 14866 Primary Feed Sliding Gear-Rear (or 19856) 14868 Secondary Feed Shaft 14869 Double Gear Secondary Shaft-Front 14870 Double Gear Secondary Shaft-Middle 14871 Double Gear Secondary Shaft-Rear (or 19857) 14872 Feed Back Gear Pinion Shaft 14882 Feed Clutch Roller Cage 14883 Feed Roller Clutch Hub 14897 Elevating Clutch Gear-Rear 14900 Cross and Elevating Reverse Lever 14905 Cross Feed Handwheel 14910 Feed Dial Support Bracket 14926 Cross Feed Reverse Clutch Gear-Front 14927 Cross Feed Reverse Clutch 14928 Cross Feed Reverse Clutch Gear-Rear 14936 Primary Cam Drive Gear 14946 Elevating Clutch Shaft 18867 Elevating Slip Clutch Driver 18872 Hand Elevating Shaft 19694 Cross Feed Screw 19856 Primary Feed Sliding Gear-Rear (or 14866) 19857 Double Gear Secondary Shaft-Rear (or 14871) Assembly Drawing #4077 Elevating Screw 14562 Elevating Nut 14713 Elevating Bevel Pinion 14715 Elevating Bevel Gear 19681 Elevating Screw

Assembly Drawing #4077-2 Starting Mechanism in Knee 3448 Inner Clutch Disc 3449 Rapid Traverse driven Plate 3452 Finger Lever 9424 Oil Pump Gear-Driven 9425 Oil Pump Gear Stud 14692 Rapid Traverse Clutch Shaft Collar 14697 Oil Pump Body 14698 Oil Pump Cover 14699 Oil Pump Gear-Driver 14779 Elevating Clutch Gear-Front Assembly Drawing #4081 Pulley Bracket SG-380 Spring 18913 Rapid Traverse Drive Bevel Gear 18917 Rapid Traverse Slip Clutch Plate 19876 Rapid Traverse Clutch Drive Gear 19883 Rapid Traverse Slip Clutch Bushing 19884 Rapid Traverse Slip Clutch Friction Plate Assembly Drawing #4083 Plain Saddle and Table 4151 Saddle Coolant Return Swivel Fitting 7319 Clutch Release Rod 7662 Handwheel Bushng 8085 Handwheel Clutch 8739 Handwheel 9105 Clutch in Handwheel 9114 Clutch Release Plate 9115 Handwheel Clutch Knob 9635 Saddle Clamp Lever 9661 Table Trip Dog-Right Hand 9662 Table Trip Dog-Left Hand 14289 Table Drive Bevel Gear 14290 Table Screw Clutch Gear 14291 Table Feed Reverse Clutch 14292 Table Screw Clutch Gear 14312 Saddle Clamp Eccentric 14317 Table Bracket-Right Hand 14318 Table Bracker-Left Hand 14321 Table Screw Nut 14325 Table Bracket Cover-Right Hand 14441 Cross Feed Bracket 14907 Cross Feed Nut 19790 Clutch Release Gear Segment Assembly Drawing #4085 Speed Gear Box 5490 Large Clutch Plate (Bronze) 9246 Speed Selection Knob 12198 Valve Operating Arm 14355 Range Selection Lever 14361 Spindle Reverse Bevel Gear 14362 Spindle Reverse Clutch 14373 Front Idler Cluster Gear 14374 Center Idler Sleeve Gear 14375 Center Idler Gear 14380 Rear Idler Gear 14427 Spindle Drive Bevel Gear 16997 Rear Idler Sleeve Gear 18670 Clutch Plate (Steel) 19828 Clutch Shifter Race-Front 19829 Clutch Shifter Race-Rear 19831 Clutch Shifter Spool Pin 19840 Clutch Shifter Center Race Assembly Drawing #4089 Vertical Head Feed Bracket 6255 Clutch Washer 7796 Head Feed Starting Lever 8085 Handwheel Clutch 8728 Handwheel Release Rod 8729 Head Adjusting Handwheel 9115 Handwheel Clutch Knob 19020 Head Feed Screw 19052 Head Feed Nut 19055 Head Feed Nut Drive Gear 19298 Feed Takeoff Gear 19299 Head Feed Reverse Clutch Gear 19300 Head Feed Reverse Clutch 19310 Head Feed Reverse Drive Gear 19311 Feed Reverse Drive Gear Shaft 19320 Handwheel Shaft and Bevel Pinion 19328 Telescopic Tube-Upper