D343 ENGINE Caterpillar


Turbocharger (T18)

Usage:

1 Clearance-shaft end ... .0065±.0025 in.0,165±0,063 mm

Maximum permissible clearance ... .011 in.0,279 mm

2 Thickness-thrust collar ... .2995±.0005 in.7,607±0,013 mm

Minimum permissible thickness ... .298 in.7,493 mm

3 Torque-impeller housing bolts ... 105±5 lb. in.121,06±5,8 cm.kg

4 Diameter-shaft bearing journal ... .6247-.6250 in.15,867-15,875 mm

Bearing bore ... .6268-.6272 in.15,92-15,93 mm

Maximum permissible clearance ... .004 in.0,1016 mm

Shaft run-out-maximum permissible ... .002 in.0,0508 mm

5 Gap-oil seal ring ... .007±.004 in.0,1778±0,1016 mm

Maximum permissible gap ... .015 in.0,38 mm

Width-oil seal ring ... .0665-.0670 in.1,689-1,701 mm

Width-oil seal ring groove ... .0705±.0010 in.1,791±0,025 mm

6 Torque-impeller nut, initial, with impeller heated to 350° F. (176° C.) ... 150 lb. in.172,95 cm.kg

Torque-impeller nut, final, after impeller is cool, below 150° F. (70° C.) nut loosened and lubricated- ... 30 lb. in.34,59 cm.kg

-plus additional tightening of ... 90°90°

7 Bore in housing for bearing ... .9830-.9835 in.24,968-24,981 mm

Bearing outside diameter ... .9780-.9785 in.24,841-24,854 mm

Maximum permissible clearance ... .007 in.0,1778 mm

8 Torque-thrust plate bolts ... 35±5 lb. in.40,35±5,8 cm.kg

9 Thickness-thrust bearing ... .091±.001 in.2,311±0,025 mm

Minimum permissible thickness ... .089 in.2,26 mm

Thrust bearing-to-face of plate depth ... .397±.001 in.10,084±0,025 mm

Maximum permissible depth ... .399 in.10,135 mm

10 Torque-turbine housing bolts ... 175±15 lb. in.201,8±17,3 cm.kg

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