COVER AS 3777892 - Caterpillar

Illustration 1 g01016809
Typical exampleDuring the installation of the crankshaft seals, the seal driver should not contact the seal on the inside diameter of the wear sleeve's flange. Diameter ... 177.80 0.25 mm (7.000 0.010 inch) (1) Install the front crankshaft seal until the seal is flush with the front face of the crankshaft. Maximum installation depth past crankshaft's front face ... 0.013 mm (0.0005 inch) (2) Install the rear crankshaft seal onto the rear of the crankshaft or onto the rear drive gear. Installation depth (A) ... 1.5 0.5 mm (0.06 0.02 inch) (3) Thrust plates are used on the center main bearing only. Thrust plates control the end play of the crankshaft. Measure the end play of the crankshaft after installation into the cylinder block. Thickness of new thrust plate ... 5.74 0.04 mm (0.226 0.002 inch) 3408B, 3408C, 3412, and 3412C engines Maximum crankshaft end play after installation ... 0.13 to 0.50 mm (0.005 to 0.020 inch) 3412D engines Maximum crankshaft end play after installation ... 0.10 to 0.60 mm (0.004 to 0.024 inch) (4) The locating pin for the crankshaft gear is installed to the following height. Maximum height of pin from the crankshaft flange ... 4.1 0.5 mm (0.16 0.02 inch)Note: During the installation of the crankshaft gear, the gear must be installed on the crankshaft with the timing mark "V" toward the outside of the crankshaft. (5) Some applications have oil gallery plugs. Minimum torque for the plugs ... 23 N m (17 lb ft)Note: Apply 5P-3413 Pipe Sealant to the threads of the oil gallery plugs prior to installation. (6) The dowel extends from the rear face of the crankshaft. Maximum distance ... 8.4 mm (0.33 inch)Reference: Refer to Specifications, "Connecting Rod and Main Bearing Journals" for information on the crankshaft journals.