TM 9-2320-361-34 16-4. REAR WINCH REPAIR (M764) (Contd) ITEM NO. 11 12 13 14 15 16 Table 16-3. M764 Rear Winch Wear Limits (Contd). lTEM/POINT OF MEASUREMENT Thimble springs (free length) Thimble spring (free length) Detent spring (free length) Clutch spring (free length) Brake lining (thickness) Clutch lining (thickness) WEAR LIMITS/TOLERANCES INCHES MILLIMETERS 2.38-2.5 60.45 -63.5 0.66-0.72 16.67-18.29 1.5 38.1 4.25 107.9 0.063-0.13 1.6- 3.3 0.168-0.38 4.27-9.65 16-39