CAMSHAFT 8D6138 - Caterpillar

(1) Coat seal bore with 7M7260 Liquid Gasket and allow to dry before installing seal.(2) Use shims as necessary to get 0.05 0.05 mm (.002 .002 in) endplay on input shaft.(3) Depth to install bearing ... 3.5 0.5 mm (.138 .020 in) using the 6V4980 Torque Screwdriver Tool Group.(4) 6Y2102 Relief Valve Group (Torque Converter)(5) 9W7189 Flow Control Valve(6) 4M7945 Spring: Length under test force ... 53.8 mm (2.12 in)Test force ... 15.2 1.2 N (3.41 .27 lb)Free length after test ... 65.0 mm (2.56 in)Outside diameter ... 17.3 mm (.68 in) Procedure To Set Input Shaft Bearing Endplay1. Make sure that the bearing cups and cones are seated against their respective housing and shaft shoulders before assembly.2. Install the bearing cage without shims (2).3. Install two bolts 180° apart. Tighten finger tight.4. Torque the bolts to 1.5 N m (13.5 lb in) using the 6V4980 Torque Screwdriver Tool Group.5. Rotate or oscillate the input shaft the equivalent of three revolutions. To rotate the input shaft, remove the plug in the bearing cage and use a M10 X 1.5 bolt 100 mm (4 in) long threaded into the hole in the end of the input shaft.6. Torque the bolts to 3.0 N m (27 lb in) and repeat Step 5. Retorque the bolts to 3.0 N m (27 lb in).7. Using a feeler gauge, measure the gap between the case and the outside diameter of the bearing cage flange radially outward from the center of each bolt. If the difference between the measurements taken in Step 7 is greater than 0.3 mm (.012 in), perform Steps 2 through 7 again.8. Add the dimensions found in Step 7 and divide by two.9. Add 0.15 mm (.006 in) to the dimension found in Step 8. This is the required shim pack thickness to provide the specified input shaft bearing endplay of 0.05 0.05 mm (.002 .002 in). If the shim thickness determined in Step 9 or the bearing adjustment is questionable, repeat Steps 2 through 9. If the "repeat" shim thickness is within 0.05 mm (.002 in) of the original thickness, use the lesser of the two measurements.10. Assemble enough shims (2) to equal the dimension found in Step 9. Verify the thickness with a micrometer.11. Install the bearing cage, shims, and bolts.