SHAFT (13 Teeth) 6K3674 - Caterpillar

(1) Coupling.(2) Drive slot angle. For Fairbanks Morse Magneto:With engine flywheel set at 18°BTC of the compression stroke for No. 1 cylinder, install coupling (1) so that drive slots in the coupling are at an angle of ... 13 5°For Altronic Magneto:With engine flywheel set at 25°BTC of the compression stroke for No. 1 cylinder, install coupling (1) so that drive slots in the coupling are at an angle of ... 20 5°(3) Diameter of gear (4) ... 22.127 to 22.157 mm (.871 to .872 in.) Bore in bushing for gear (4) ... 22.225 to 22.250 mm (.875 to .876 in.)(4) Gear.(5) Camshaft drive gear.(6) Bolt that holds camshaft drive gear (5) in position. Install the gear as follows: a. Pin both camshafts and put camshaft drive gear (5) in position on the camshaft taper.b. For correct timing, all gear clearance (backlash) must be removed. Turn camshaft drive gear (5) in the same direction as crankshaft rotation and hold in this position.c. Install gear (7) to hold camshaft drive gear (5) on the camshaft.d. Tighten bolt (6) in steps to a torque of ... 360 50 N m (265 35 lb.ft.)e. Hit bolt (6) and again tighten the bolt to a torque of ... 360 50 N m (265 35 lb.ft.) If necessary, repeat Step e until the bolt holds torque (cannot be moved) to make sure the drive gears are in full contact with the taper on the camshafts.(7) Gear.