SEAL-LIP TYPE 4560191 - Caterpillar

1. Remove bolts (1), lift shaft (2) and the rocker arms off the valve cover base and push rods. The following steps are for the installation of the rocker arms and shaft assemblies.2. Put 2P2506 Thread Lubricant on all the bolts that hold the rocker arms shafts. Put rocker arms and shafts (2) in position on the push rods. Tighten the bolts first to a torque of 270 27 N m (200 20 lb ft). Start with the bolt in the center of the rocker shaft assembly.3. Tighten the bolts again to a torque of 450 20 N m (330 15 lb ft). Tighten the bolts by hand to a torque of 450 20 N m (330 15 lb ft).End By:a. install valve covers and spark plugsDisassemble Rocker Arms & Shaft Assemblies
Start By:a. remove rocker arms and shaft assemblies 1. Remove retainer (2) from the end of the shafts.2. Remove the washers and rocker arms (1). 3. Remove pins (6) that hold the brackets to each end of the shaft. The center bracket does not have a pin.4. Remove bracket (3), rocker arm (4) and spring (5).Assemble Rocker Arms & Shaft Assemblies
1. Put clean engine oil on the shaft2. Install the bracket and rocker arms for the center bracket.3. Install spring (1), rocker arm (2) and bracket (3). Install the pin that holds the brackets on each end of the rocker shaft. Install the pin until it extends 12.7 1.0 mm (.50 .04in) from the surface of the bracket. 4. Install rocker arm (4) on each end of the shaft. Install washers (5) as needed to get an assembled clearance of .030 to 1.40 mm (.0012 to .055 in) at each end of the shaft. Install the retainer on each end of the shaft.End By:a. install rocker arms and shaft assemblies