SERVICE MANUAL TORQUE CHART DESCRIPTION DT-466 Back Plate-to-Center Housing 4.5 - 6.8 N•m Capscrews (40 - 60 lbf-in) Shaft Lock Nut (Hot) N.A. Shaft Lock Nut (Final Time) 2.0 - 2.3 N•m (18 - 20 lbf-in) * Center Housing-to-Turbine 11.3 - 14.7 N•m Housing Capscrews (100-130 lbf-in) Compressor Housing Clamp Nut N.A. Center Housing-to-Compressor 12.4 - 14.7 N•m Housing Capscrews (110-130 lbf-in) * Turn lock nut additional 1/4 turn after reaching torque value. TROUBLE SHOOTING CONDITION POSSIBLE CAUSE REMEDY Shaft and Turbine Wheel a.    Bearing surfaces a. Dirty or insufficient oil.. a. Replace scratched and worn. Wheel overspeeding. b.    Discoloration b. Overheating or insufficient oil b. Reuse if slightly discolored and not deeply scratched. c. Worn on one side c. Operating with unbalanced c. Replace. only wheel. d.    Cracked, bent or d. Foreign objects, heat or d. Replace. damaged blades fatigue. Bearings a.    Both ID and OD a. Dirty or insufficient oil. a. Replace. scratched and worn. Wheel overspeeding. b.    Seized on shaft or b. Overheating or lubrication b. Replace. excessive OD wear failure. c. Worn on one side c. Operating with unbalanced c. Replace. only wheel. Bearing Housing a.    Bore scratched or a. Dirty or insufficient oil. a. Replace. worn. b.    Carbon deposits. b. Oil leaking; overfueling. b. Clean housing.  Re- move any restriction from air intake system or oil drain - CTS-4104 PRINTED IN UNITED STATES OF AMERICA Page 19