SHAFT-STUB 3N6059 - Caterpillar

1. Loosen adjustment screws (1). Remove six bolts and washers (2).2. Remove rocker shaft (3) and the push rods. Remove the O-ring seal from the rear support bracket. The following steps are for the installation of the rocker shaft and push rods. The O-ring seal in the rear support must be installed new each time the bolt is removed from the rear support bracket.3. Install the push rods. Position the rocker shaft assembly (3) and install bolts and washers (2).4. See the topic, Valve Rocker Arms And Lifters in the Specifications module, for Correct Torques And Adjustments.5. Make adjustments to the rocker arms in proper sequence.End By:a. install valve coverDisassemble And Assemble Rocker Shaft
Start By:a. remove rocker shaft and push rods 1. Remove O-ring seal (1) from the rear support bracket. A replacement of the O-ring seal must be made each time the head bolt is removed from the rear support bracket. 2. Remove retainer ring (6), washer (5), spring (4) and washer (3) from each end of rocker shaft. Remove rocker arm (2). 3. Remove pin from rear support bracket with a hammer and punch. Remove rear support bracket (7) from shaft.4. Remove remainder of rocker arms, springs, washers and brackets.5. Remove plugs from each end of the shaft if necessary. The following steps are for the assembly of the rocker shaft. 6. Install rocker arms (2), brackets (8), washers (5) and springs (4) on the rocker shaft.7. Install rear support bracket (7) on rocker shaft. Make sure hole in rear support bracket is in alignment with hole in rocker shaft.8. Install pin (9) through bracket and shaft with a hammer.9. Pin (9) must extend 9.60 mm (.378 in.) above the bracket.10. Install O-ring seal (1) in the rear support bracket. Install rocker arm (2), washer, spring, washer and retainer ring on the rocker shaft.11. Install the plugs in each end of the rocker shaft if they were removed.End By:a. install rocker shaft and push rods