PUMP GP-PISTON 3898425 - Caterpillar

Assembly Procedure
Keep all parts clean from contaminants.Contaminants may cause rapid wear and shortened component life.
Care must be taken to ensure that fluids are contained during performance of inspection, maintenance, testing, adjusting and repair of the product. Be prepared to collect the fluid with suitable containers before opening any compartment or disassembling any component containing fluids.Refer to Special Publication, NENG2500, "Caterpillar Tools and Shop Products Guide" for tools and supplies suitable to collect and contain fluids on Caterpillar products.Dispose of all fluids according to local regulations and mandates.
Illustration 1 g00449863
Install rocker arms (4), supports (1), washer (5) and springs (2) on the rocker shaft.
Install rear rocker shaft support (6) on the rocker shaft. Ensure that the hole in the rear rocker shaft support is aligned with the hole in the rocker shaft.
Install pin (3) through the rocker shaft support and the rocker shaft with a hammer.
Pin (3) must extend 9.60 mm (.378 inch) above the rocker shaft support.
Illustration 2 g00449625
Illustration 3 g00449628
Install O-ring seal (7). Install rocker arm (4), washer (8), springs (9), washer (10) and retainer ring (11) .Note: Make sure that the correct number of washers (8) are installed on the shaft.
Install the plugs in each end of the rocker shaft if the plugs were removed.End By: Install the rocker shaft and pushrods. Refer to Disassembly and Assembly, "Rocker Shaft and Pushrods - Install".