CHANGEOVER AR 3C8356 - Caterpillar

Illustration 1 g01185546
Rear timing gears (V) Camshaft gearsRefer to the following procedure if you have an engine with serial numbers, SMP1-134 and RNC1-2254. These engines will contain 224-1223 Camshaft Gears : The camshaft gears have a timing mark that points toward the rear housing at location (A). When the camshaft gears and rear housing marks are aligned, the No. 11 piston is on top center (TC) of the compression stroke. The No. 1 piston is at top center (TC) of the exhaust stroke. To verify that the No. 11 piston is at top center (TC) of the compression stroke, remove the valve cover and check the valves. The inlet and exhaust valves for the No. 11 cylinder should be fully closed. If the valves are fully closed, the rocker arms can be moved by hand. Rotate the crankshaft 360 degrees in order for the No. 1 piston to be at top center (TC) of the compression stroke.Refer to the following procedure if you have an engine with serial numbers SMP135-UP and RNC2255-UP. These engines will contain 264-0544 Camshaft Gears :The camshaft gears have a timing mark that points toward the rear housing at location (A). When the camshaft gears and rear housing marks are aligned, the No. 1 piston is at top center (TC) of the compression stroke. The No. 11 piston is at top center (TC) of the exhaust stroke. In order to verify that the No. 1 piston is at top center (TC) of the compression stroke, remove the valve cover and check the valves. The inlet and exhaust valves for the No. 1 cylinder should be fully closed. If the valves are fully closed, the rocker arms can be moved by hand.