SHAFT ASSEM. (25 & 22 Teeth) 8S6303 - Caterpillar

For procedure on how to measure for a bent crankshaft, See Guideline for Reusable Parts, SEBF8030.(1) Maximum length of pin out of crankshaft face ... 6.4 mm (.25 in)(2) End play for the crankshaft (new) ... 0.15 to 0.51 mm (.006 to .020 in) Maximum permissible end play with used bearings ... 0.89 mm (.035 in)(3) Make reference to Main Bearing Journals.(4) Make reference to Connecting Rod Bearing Journals.(5) Maximum permissible temperature of the gear for installation on the crankshaft ... 205°C (401°F) Centerline of gear key way to be in alignment with centerline of dowel within ... 0.50 mm (.020 in) Install gear with timing "V" mark to the outside.(6) Length of dowel out of the crankshaft ... 4.1 0.5 mm (.16 2 in)(7) 2W1734 Seal Group (rear).(8) Thrust plates for center main bearing only.(9) 2W1733 Seal Group (front). Remove front and rear seal groups as follows: Seals and wear sleeves can not be used again, after the seals and wear sleeves are separated.a. Use the 1U7600 Puller Group to remove the seals.b. Use the 5P7318 Distorter Group to remove the wear sleeves. Install front and rear seal groups as follows:a. Clean the outer surface of the crankshaft with 6V1541 Quick Cure Primer.b. Crankshaft seals must be installed with the lip of the seal toward the inside of the engine as shown. Make sure the correct seal is installed on each end of the crankshaft. Use the 2W1733 Seal Group on the front and the 2W1734 Seal Group on the rear. No lubrication is needed to install wear sleeves and seals.c. Do not separate seals from sleeves. Install the seal groups as a unit on each end of the engine as shown with the correct tools. See Special Instruction, SMHS8508 and SMHS8008 for the necessary tools and complete procedure for installation of front and rear seal groups.