TM-9-2990-206-34&P Parts Manual, Tools and Maintenance for Turbocharger Model T18C01 Download
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TM 9-2990-206-34&P ASSEMBLY—Continued. INSTALL BACKPLATE (WITH THRUST SPACER), COMPRESSOR WHEEL, AND NUT TOOLS : 9/16 inch, 1/2 inch drive socket 3/16inch, angular offset box wrench, 12 point 1/2 inch, 1/2 inch drive socket, 12 point 1/2 inch drive, O to 300 pound-inches, torque wrench INSTALLATION: 1. 2. 3. 4. 5. 6. Hold thrust spacer (A) in position in back- plate (B) and install backplate on center housing (C). Install four flat washers and bolts (D) and tighten using 9/16 inch socket and torque wrench. Torque tighten to 275 pound-inches (31 N-m). Place a 13/16 inch angular 12 point box wrench (E) in vise. Position wrench to hold turbine wheel hub. Place turbine wheel hub in box wrench (E) and hold in position. Install compressor wheel (F) on turbine wheel shaft. Install compressor wheel nut (G). Using torque wrench (H), torque tighten nut to 137 pound-inches (15.5 N-m) to seat the compressor wheel against the thrust spacer (A). Loosen compressor wheel nut two turns. Tighten nut one turn and note drag torque (torque re- quired to turn nut before it seats on the com- presser wheel). Tighten nut to 45 pound-inches (5 N-m) above drag torque. NOTE A sharp increase in torque will be noted when the nut bottoms against the compressor wheel. Tighten nut to final position by pulling the wrench through an angle of llO O- beyond the 45 pound-inches (5 Nom) torque point to attain proper shaft stretch. 3-22 TA097828