FAN AS 2302892 - Caterpillar

Illustration 1 g00311103
Timing pin location
(1) Manual barring group
(2) Storage position for timing pin
Remove the crankshaft timing pin from the timing pin's storage position (2). The timing pin's storage position is located below manual barring group (1) on the right side of the rear housing.
Illustration 2 g00311105
Installation of crankshaft timing pin
(3) Flywheel 's bracket for timing
(4) Timing pin's mounting bracket
(5) Crankshaft timing pin
Prelube the engine. Use the barring group in order to turn the engine flywheel in the direction of normal engine rotation. Turn the engine flywheel in the direction of normal engine rotation until crankshaft timing pin (5) can be installed through bracket (4). Then, install crankshaft timing pin (5) so that the pin is engaged in bracket (3). Note: Prelube the engine before you rotate the crankshaft in order to perform service work. Rotating the crankshaft before prelube may cause damage to the crankshaft bearings if the mating surface is dry.Note: If the flywheel is turned beyond the point of installing the timing pin in the flywheel's bracket for timing, the flywheel must be turned opposite the direction of normal rotation. Turn the flywheel opposite the direction of normal rotation for approximately 20 degrees. Then, turn the flywheel in the direction of normal engine rotation until the timing pin can be installed in the flywheel's bracket for timing. This procedure is required to ensure that the play is removed from the timing gears when the No. 1 piston is put on the top center position of the compression stroke.
Remove the valve cover from the No. 1 cylinder head.
The inlet and exhaust valves for the No. 1 cylinder are fully closed if No. 1 piston is on the compression stroke and the rocker arms can be moved by hand. If the rocker arms cannot be moved and the valves are slightly open, the No. 1 piston is on the exhaust stroke. Refer to Crankshaft Position For Fuel Timing And Valve Lash Setting. Note: If the actual stroke position that is identified is incorrect and the other stroke position is needed, it is necessary to remove all timing pins from the engine. After all of the timing pins have been removed, rotate the flywheel for 360 degrees in the direction of normal rotation.