20479315
2-2012/Rev 03
iii
7 Electrical System ............................................................................................... 7-1
7.1 Overview ................................................................................................ 7-1
7.2 Sensors and Solenoids............................................................................ 7-1
7.3 Service and Maintenance Procedures .................................................... 7-5
Proximity Switch Maintenance .............................................................. 7-5
8 High Pressure Water System ........................................................................... 8-1
8.1 Overview ................................................................................................ 8-1
8.2 Operation................................................................................................ 8-1
8.3 System Components............................................................................... 8-3
8.4 Service and Maintenance Overview ...................................................... 8-4
Torque Specifications ............................................................................ 8-5
Specialized Maintenance Tools ............................................................. 8-7
8.5 High and Low Pressure Water Piping .................................................... 8-8
8.6 High Pressure Cylinder Assembly ......................................................... 8-8
High Pressure Cylinder Assembly Removal .......................................... 8-9
High Pressure Cylinder Assembly Installation ...................................... 8-10
High Pressure Cylinder Maintenance .................................................... 8-11
8.7 Hard Seal End Caps ............................................................................... 8-11
Hard Seal End Cap Removal ................................................................. 8-11
Hard Seal End Cap Installation .............................................................. 8-12
8.8 Sealing Head .......................................................................................... 8-13
High Pressure Discharge Check Valve .................................................. 8-13
Low Pressure Inlet Check Valve ............................................................ 8-15
Sealing Head Maintenance .................................................................... 8-16
8.9 High Pressure Seal Assembly ................................................................ 8-16
8.10 Hydraulic Cartridge Seal and Plunger Removal .................................... 8-18
Plunger Maintenance ............................................................................. 8-21
Plunger Installation ................................................................................ 8-21
Hydraulic Cartridge Seal Installation ..................................................... 8-21
8.11 Hydraulic Piston ..................................................................................... 8-23
Hydraulic Piston Removal ..................................................................... 8-23
Bearing Rings and Seal Assembly ......................................................... 8-25
Plunger Button Sockets, Seals and Retainer Pins .................................. 8-25
Internal Check Valves ............................................................................ 8-26
Hydraulic Piston Installation .................................................................. 8-26
8.12 Hydraulic Cylinder Maintenance ........................................................... 8-28
8.13 High Pressure Attenuator ....................................................................... 8-28
8.14 High Pressure Dump Valve ................................................................... 8-29
Pneumatic Control Valve ....................................................................... 8-29
Pneumatic Actuator ................................................................................ 8-33
8.15 Weep Holes ............................................................................................ 8-34
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