UPPERSTRUCTURE / Pump Device 50 View A W173-02-04-002 1 - Retaining Ring 14 - Bearing Nut 27 - Link 39 - Bolt (8 Used) 2 - Drive Gear 15 - Roller Bearing 28 - Pin (2 Used) 40 - Spring Washer (8 Used) 3 - O-Ring 16 - Roller Bearing 29 - Lever (2 Used) 41 - Set Screw 4 - Regulator 17 - Spacer 30 - Servo Pin 42 - Servo Piston 5 - Socket Bolt (4 Used) 18 - Packing 31 - Head Cover 43 - O-Ring 6 - Spring Washer (4 Used) 19 - Spring Pin (2 Used) 32 - Plug 44 - Stopper L 7 - Retaining Ring 20 - Plug 33 - Spring Washer (8 Used) 45 - Valve Plate 8 - Seal Cover 21 - Pin 34 - Socket Bolt (8 Used) 46 - Cylinder Block 9 - Oil Seal 22 - Plunger (7 Used) 35 - Stopper S 47 - Spring 10 - O-Ring 23 - Pin (2 Used) 36 - O-Ring 48 - Center Shaft 11 - Casing 24 - Pin 37 - Name Plate 49 - Drive Disc 12 - O-Ring (10 Used) 25 - Retaining Ring (6 Used) 38 - Screw (2 Used) 50 - P Sensor 13 - Spring Pin (2 Used) 26 - Feedback Pin W2-4-31 37 38 32 39 39 , 40