TM 9-2320-209-34-2-3 FRAME 9 1. Check that drum gearcase oil seal (1) is not torn, damaged or leaking. If oil seal is damaged, take seal out of drum (2) and throw it away. 2. Check that two drum bushing type bearings (3) are not cracked, scored or damaged. If bearings are damaged, take bearings out of drum (2) and throw them away. 3. Measure two bearings (3) to see that they are within wear limits. Refer to table 18-1. If bearings are not within given limits, throw them away. 4. Take out setscrew (4). GO TO FRAME 10 18-10