TRANSMISSION AR 1635299 - Caterpillar

Disassemble Rocker Shafts
start by:a) remove rocker shafts and push rods1. Remove retainer (2) from end of shafts.2. Remove washers and rocker arm (1). 3. Remove pins (6) that hold brackets to each end of shaft. The center bracket does not have a pin.4. Remove bracket (3), rocker arm (4) and spring (5).Assemble Rocker Shafts
1. Put clean engine oil on the shaft.2. Install bracket and rocker arms for the center bracket. 3. Install spring (1), rocker arm (2) and bracket (3). Install the pin that holds brackets on each end of rocker shaft. Install pin to have .50 .04 in. (12.7 1.0 mm) extended from surface of bracket. 4. Install rocker arm (4) on each end of the shaft. Install washers (5) as needed to get an assembled clearance of .012 to .055 in. (0.30 to 1.40 mm) at each end of the shaft. Install the retainer on each end of the shaft.end by:a) install rocker shaft and push rods