TM 5-3895-374-24-1GP255FHFig. 5 - Typical direct drive turbo blower.CAUTIONEnsure that the electrical power cannot be accidentally applied to the motor while the casingis disassembled.A.Remove both self-tapping screws (22) holding the front half of the casing to the outlet adapter.B.Remove all of the hex head bolts (14) located around the casing flange.C.Separate the two halves. The two halves are factory sealed with a resin coating. To facilitate their separation, Itis recommended that a knife be drawn along the joining edge of the halves. Moderate force may be required toovercome the seal between the casing halves.D.Loosen the three setscrews (5) at the rear of the impeller hub.E.Pull the Impeller from the shaft. DONOTREMOVETHESTUDORLOCKNUTATTHECENTEROFTHEIMPELLER.F.Inspect the Impeller and replace If necessary.G.Clean any burrs from the shaft caused by the setscrews If necessary, use an emery cloth to restore a smoothsurface.H.Apply an antiseize compound to the Impeller hub bore and the shaft.I.Place the motor shaft keyway at the 12 o’clock position and insert the key.J.After ensuring that the impeller hub keyway is aligned with the key on the motor shaft, slide the impeller on theshaft.K.Replace the front half of the casing and tighten all casing hex head bolts (14).(page 3-544)
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