UPPERSTRUCTURE / Pump Device 1 - Regulator Casing 10 - Support Plug 20 - Pilot Piston 29 - Socket Bolt (2 Used) 2 - Spring Seat 11 - O-Ring (2 Used) 21 - Pf Sleeve 30 - O-Ring (2 Used) 3 - Pilot Spring 13 - Pin 22 - O-Ring 31 - Seat 4 - Adjusting Disc Q 14 - O-Ring (5 Used) 23 - Plug 32 - Steel Ball 5 - O-Ring (2 Used) 15 - O-Ring 24 - Socket Bolt (4 Used) 33 - Stopper 6 - Cover 16 - Pin 25 - Socket Bolt 34 - Socket Bolt (6 Used) 7 - Socket Bolt (4 Used) 17 - Feedback Lever 26 - Plug (9 Used) 35 - O-Ring 8 - Nut 18 - Spool 27 - Valve Casing 9 - Adjusting Screw 19 - Sleeve 28 - Proportional Pressure Reducing Valve W2-4-43