PLATE 4S5891 - Caterpillar

Disassemble Rocker Shaft Assemblies
start by:a) remove rocker shafts and push rods 1. Slide shaft assembly (1) out of rocker arms (2). If necessary, remove the dowel from shaft assembly (1). 2. Remove adjustment screw (4) and the nut from rocker arm (2).3. Use a hammer and punch to push socket (3) out of rocker arm (2). 4. Remove the ring that holds button (5) in socket (3) and remove the button from the socket. 5. Use tool group (A) to remove bearing (6) from rocker arm (2).6. Do Steps 2 through 5 for the other two rocker arms.Assemble Rocker Shaft Assemblies
1. Make an alignment of the oil hole (slot) in the bearing with the oil passage in rocker arm (1). Use tool group (A) to install the bearing in rocker arm (1) with the joint in the bearing toward the top of the rocker arm. The bore in the bearing must be 37.140 0.015 mm (1.4622 .0006 in.) after assembly.2. Make an alignment of the scribe mark on socket (2) with the mark on rocker arm (1) and install the socket in the rocker arm. 3. Put button (3) in socket (2) and install ring (4) to hold the unit together. 4. Install adjustment screw (5) and nut (6) on rocker arm (1).5. Do Steps 1 through 4 for the other two rocker arms.6. If the dowel was removed from shaft assembly (7), install the new dowel in the shaft until it is 7.7 0.5 mm (.303 .020 in.) above the surface of the shaft. 7. Put clean engine oil on the rocker arm bearings and shaft assembly (7). Install rocker arms (1) on shaft assembly (7).end by:a) install rocker shafts and push rods