PISTON 4777677 - Caterpillar

Remove and Install Procedure
Start By:
Move the battery disconnect switch to the OFF position.
Care must be taken to ensure that fluids are contained during performance of inspection, maintenance, testing, adjusting, and repair of the machine. 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 to collect and contain fluids in Caterpillar machines.Dispose of all fluids according to local regulations.
Note: Put identification marks on all lines, on all hoses, on all wires, and on all tubes for installation purposes. Mark parts as needed to aid in assembly. Plug all lines, hoses, and tubes, this action helps to prevent fluid loss and helps to keep contaminants from entering the system.Note: Cleanliness is an important factor. Before the removal procedure, clean the exterior of the components to dirt from entering the internal mechanism. Precision components can be damaged by contaminants or by dirt.
Illustration 1 g03420979
Illustration 2 g03420980
Disconnect wires (1) from nozzle (3) .
Disconnect nozzle (3) from the cannon by rotating threaded coupler (2). Remove the nozzle.
Install nozzle (3) in the reverse order of removal.