DOWEL 7X2438 - Caterpillar

1400 and 1600 Frame Generator Flex Coupling Installation
Mount the flex coupling plates (1) on main rotor shaft (2). Note: After the plates are assembled to the rotor shaft, rotate each of the plates so the flywheel mounting bolt holes in each plate is aligned with the other plates. Each of the mounting bolt holes must form an appropriate hole for each mounting bolt.
Illustration 1 g01467487
Install the mounting bolts (3) that are for the flex coupling plates. Tighten the mounting bolts. Note: If required, then verify that the generator rotor end play for the 1600 frame generators is in the nominal center position before assembling the generator to the engine. Refer to the 1400 and 1600 Frame "Single Bearing Generators – Install" section in this document.Two bearing Generator Flexible Coupling - Install
Rubber in Shear Type Coupling Installation
Note: Do not use any lubricant between inner and outer hubs of the coupling.
Verify the generator rotor end play for the 1600 frame and 1800 frame generators. The rotor is to be located in the nominal center position during this process. The front face of the coupling, that is, the machined surface where the flexible disc bolts to, is 25 mm (1 inch) from the face of the flywheel.
Assemble the outer ring (4) to the flywheel. Refer to Illustration 2. Assemble the correct washers, that are supplied with the coupling, to the bolts. Position the washers with the beveled edge toward the bolt head. Torque the bolts to 200 N m (148 lb ft).
Illustration 2 g01578713
Coupling
(4) Outer Ring
Install the flexible inner element (5) on the generator drive hub. Refer to Illustration 3. Torque the mounting bolts to 490 N m (361 lb ft) using the alternating pattern. Note: The flexible inner hub of the coupling is to be oriented with the steel flange facing toward the engine.
Illustration 3 g01631414
Slide the generator toward the engine, making sure the flexible rubber inner element (5) is correctly engaged in the teeth of the outer ring (4). Note: There is a small clearance between the driving and driven teeth in order to allow easier assembly. Do not use any lubricant during the assembly or during the use of the coupling.
Verify the axial position of the flexible rubber inner element (5). The element must not protrude out from the outer ring, or press against the flywheel. The element must be at the nominal position. The nominal position is approximately in the center of the outer ring (4). Adjust the generator rotor end play if necessary for the 1800 frame generator.
Align the generator and torque the rest of the assembly bolts as required. Rubber in Compression Type Coupling Installation
Note: Do not use any lubricant between inner and outer hubs of the coupling.
Adjust the generator end play for the 1800 frame generator. Note: Use a large pry bar in order to pry between the generator drive hub and the bearing bracket only. A significant force may be required to move the rotor initially. Ensure that there is no damage to any of the