BODY AS-PISTON 2651313 - Caterpillar

Remove & Install Camshaft
Start By:a. remove rocker arm assemblies and push rodsb. remove fuel injectorsc. remove front pulley and damperd. remove front timing covere. remove fuel transfer pump Turn the engine to (TDC) top center compression stroke for the No. 1 piston and install crankshaft flywheel timing pin. This will help when timing the camshaft when installing.
Wire used to hold cam roller followers up off camshaft. It is not necessary to remove the cylinder head. With the cylinder head in place, just wire the cam roller followers up off the camshaft and then remove the camshaft. 1. Remove camshaft retainer bolt (1) and remove camshaft assembly (2). The following steps are for the installation of the camshaft assembly.
Typical Example When installing the camshaft, rotating it both clockwise and counter clockwise directions will help prevent it from binding in the bearing bores.2. Put engine oil on the lobes and journals of the camshaft. Carefully install the camshaft. When installing the camshaft, be sure the number one cylinder is at (TDC) top dead center of the compression stroke with the timing pin installed in the flywheel. Camshaft timing is very important. Cam gear timing marks must line up with idler gear timing marks as illustrated. For more information about timing of engine, refer to Specifications module, Form No. SENR3908.
Camshaft Timing3. With the camshaft properly timed and positioned, install retaining bolt (1). Tighten bolt (1) to a torque of 48 7 N m (37 5 lb ft). Remove the wire that was used to hold the cam roller followers up off the camshaft.End By:a. install fuel transfer pumpb. install front coverc. install front pulley and damperd. install fuel injectorse. install rocker arm assemblies and push rodsDisassembly & Assembly of Camshaft And Gear Assembly
Start By:a. remove camshaft assembly 1. Wrap camshaft portion of camshaft and gear assembly (1) with paper towels to protect the camshaft from being damaged. 2. Remove six bolts (2). Remove timing/speed sensor ring gear (3). The timing/speed ring gear is located on gear (4) by dowel (6). Care must be