ENGINE AR-BASIC 0R3980 - Caterpillar

a. Use an outside diameter micrometer (47) and make a measurement of the diameter of the stator flange at four points on stator. Make a record of the lowest reading. b. Use an inside diameter micrometer (48) and make a measurement of the inside diameter of outer edge of flange on impeller wheel (22) at four points. Make a record of the highest reading.c. The clearance across the diameters between the impeller and stator is the difference between the highest reading on impeller and the lowest reading on stator. The clearance must be 0.25 to 0.35 mm (.010 to .014 in). Maximum permissible clearances across the diameters is 0.61 mm (.024 in).d. The running clearance is one half of the measurement made across the diameters. Running clearance must be 0.125 to 0.175 mm (.005 to .007 in). Maximum permissible running clearance is 0.30 mm (.012 in). 3. Use tooling (F) and install bearing (44) into housing (36). 4. Put retainer (44) in position on the housing, and install six bolts (43). Tighten bolts (43) to a torque of 50 7 N m (37 5 lb ft). 5. Use tooling (E) and install bearings (40) in flange assembly (39).a. Bearing (40a) should be installed to a depth of 25.4 mm (1.0 in) below the surface of flange assembly (39).b. Bearing (40b) should be installed flush with the surface of flange assembly (39).c. Bearings (40) should have an inside diameter of 44.501 0.013 mm (1.7520 .0005 in) after installation.6. If carrier (41) was removed from flange assembly (39), heat the carrier to a temperature of 138°C to 166°C (280°F to 330°F) for a maximum time of ten minutes. Install carrier (41) on flange assembly (39). Install seal ring (42) on carrier (41).
When the flange assembly is installed into the housing, use care to avoid causing damage to seal ring (15).
7. Put SAE 30 oil on seal ring (42). Pull the ends of the seal ring together, and install flange assembly (39) into housing (36).8. Put retaining ring (49) in position in the groove on flange assembly (39). Compress the ring, and install gear (38). Make sure retaining ring (49) engages the slot in gear (38) to hold it into position.9. Install two pins (37) to hold the retaining ring in position. 10. Hold gear (38) and flange assembly (39) to prevent them from sliding, and turn housing (36) over. Put spacer (50) in position on the flange assembly.11. Install turbine wheel (34) onto the flange assembly.12. Use tool (G), and install retaining ring (35) onto the flange assembly. 13. Use tooling (F), and install bearing (33) into carrier (32). 14. Use two 3/8" -24 NF guide bolts, and put carrier (32) in position in impeller wheel (22). Use tooling (F), and install carrier (32). 15. Turn impeller wheel (22) over, and put retainer (31) in position. Install eight bolts (51), and tighten to a torque of 50 7 N m (37 5 lb ft).