ADAPTER 7D4903 - Caterpillar

(1) Turbocharger impeller installation at room temperature: a. Put impeller on shaft.b. Put a small amount of 2P2506 Thread Lubricant on the threads and impeller face that will be under the nut. c. Tighten the nut to ... 31 N m (23 lb.ft.) Do not bend or add stress to the shaft when the nut is loosened or tightened. d. Loosen the nut on the shaft.e. Tighten the nut to ... 5 N m (4 lb.ft.)f. Tighten the nut more ... 120°(2) Torque for the clamp bolt ... 14.0 1.5 N m (10 1 lb.ft.) Hit lightly all around clamp with a soft faced hammer and again tighten to ... 14.0 1.5 N m (10 1 lb.ft.)(3) Bore in the bearings ... 21.585 to 21.595 mm (.8498 to .8502 in.) Diameter of the surfaces (journals) on the shaft ... 21.539 to 21.549 mm (.8480 to .8484 in.)(4) Bore in the housing ... 30.594 to 30.607 mm (1.2045 to 1.2050 in.) Outside diameter of bearings ... 30.467 to 30.480 mm (1.1995 to 1.2000 in.)(5) Clearance between the ends of oil seal ring ... 0.20 to 0.38 mm (.008 to .015 in.) (6) End play for the shaft ... 0.165 0.063 mm (.0065 .0025 in.) (7) Torque for the bolts that hold the backplate ... 10 1 N m (7 1 lb. ft.) Torque for the bolts and nuts that hold the turbocharger to the exhaust manifold (put 5P3931 Anti-Seize Compound on the threads) ... 54 5 N m (40 4 lb.ft.) (8) Torque for the bolts that hold the turbine housing to the cartridge housing (put 5P3931 Anti-Seize Compound on the threads) ... 20 2 N m (15 1 lb.ft.)