56 P1512120 R3ImportantThe drive belt should be just tight enough to not slip on the drive pulley when operating. If the beltis too loose, it will slip, possibly causing a squeaking sound and slowing the belt down. If the belt istoo tight, it will cause excess wear.4. Reattach and secure guard. Start system to ensure proper operation.6.18. Align the Drive BeltsÆWhen equipped:1. Lay a straight edge across the pulley faces to check the alignment.2. Use the pulley hub to move the pulley to the required position for alignment.3. Tighten the hub bolts to secure pulley on the drive shaft.4. Check the belt tension.5. Reattach and secure the guard.6.19. Replace the Drive BeltsÆWhen equipped:1. Fully loosen the drive belts.2. Remove and replace the old belts.3. Tighten the drive belts as described in Belt Tension.4. Align the drive belts as described in Belt Alignment.5. Reattach and secure the guard.6.20. Repack the Wheel Bearings with Grease1. Block wheels and ensure unit is stable.2. Remove the wheel bolts and the wheels.3. Clean wheel and hub mounting surfaces to ensure there is no rust or debris.4. Remove the wheel bearing and pack with grease. Use SAE multi-purpose high-temperature grease withextreme pressure (EP) performance. SAE multi-purpose lithium-based grease is also acceptable.5. Tighten the wheel bolts (diagonal pattern) with a torque wrench to 80 ft-lb (±10 ft-lb) of torque. Inspect tomake sure the wheel is sitting flush with the hub.6. MAINTENANCE PORTABLE GRAIN BELT CONVEYOR – S-DRIVE FIELD LOADER