GENERATOR GP - 3991945 - Caterpillar

(1) End play of pulley ... 0.03 to 0.23 mm (.001 to .009 in)(2) Dimension from mounting face of bracket to the rear face of pulley ... 53.1 mm (2.09 in)(3) Maximum radial play of pulley ... 0.13 mm (.005 in)6N7691 Pulley Assembly (with hexagon nut and pinned shaft).
(1) Torque for screws ... 4.5 0.8 N m (40 7 lb in) The head of screws (1) must be below outer surface (5) of cover (4).(2) Torque for nut ... 149 20 N m (110 15 lb ft)(3) *End play for the pulley ... 0.03 to 0.25 mm (.001 to .010 in) Put 2S3230 Bearing Lubricant in areas (A) until they are one-third to one-half full of lubricant.*See 3208 Diesel Truck Engine Testing & Adjusting for end play adjustment procedure.