General Pump View
The Eaton Model 72400 is a Servo Controlled Piston Pump. The primary image shows a detailed external view of the pump assembly, highlighting its various ports and construction.
Parts Drawing and Assemblies
Page 2: Pump Components
This section provides a diagram illustrating the main components of the pump. It notes that the pump drawn is typical of a righthand rotation with porting out the left side. Key components are identified by numbered callouts. A note indicates the location for the Serial Code and Product Number. A separate diagram shows the 'Shaft assembly for rear pump of tandem'.
Page 3: Tandem and Single Pump Assemblies, Valve Plate Identification
Illustrates the 'Assembly for Front pump of Tandem' and the 'Assembly for single pump or rear pump of tandem'. It also shows the 'Inner Gerotor and 11 tooth Coupler'. A 'Valve Plate Identification' section includes diagrams showing the 'V' notch locations for 'Lefthand Rotation' and 'Righthand Rotation'.
Page 6: Rotating Kit and Servo Piston Assemblies
Details the 'Item 8 - Rotating Kit Assembly' and 'Item 9 - Servo Piston Assembly' with exploded view diagrams and associated parts lists. A caution is noted: 'Do not disassemble servo piston assembly.'
Page 7: Relief Valve and Housing Identification
Presents 'Item 21 or 22 - Relief Valve S/A' with a table of 'Internal Relief Valve Settings Available' listing Part Numbers and pressure ratings in bar [PSI]. It also details 'Item 28 - Housing Identification' with diagrams showing port configurations ('A' Auxiliary Port, 'C' Drain Port, 'B' Auxiliary Port, 'D' Drain Port, 'E' Drain Port) and a table linking Housing Assy. Part No. to Port Machined options.
Page 8: Endcover Assembly Identification
Describes 'Item 29 - Endcover Assembly' with a parts list and a table for 'Item 29 - Endcover Assembly Part Number Identification'. This table correlates 'Rear Mounting' types (e.g., Rear "B" Mount, Accepts Gerotor Charge Pump Adapter) and 'Support Hole' options with specific Endcover Assembly Part Numbers. Diagrams illustrate these mounting configurations.
Page 10: Charge Pump Adapter Assembly
Details 'Item 46 - Charge Pump Adapter Assembly' with a diagram and parts list. Includes a table for 'Gerotor Pocket Depth' showing displacement and pocket depth in mm [in.].
Page 11: Charge Pump Adapter Identification
Provides identification diagrams for 'Lefthand Rotation' and 'Righthand Rotation' showing flow paths. An 'Adapter, Item 46, Identification Chart' is presented as a table, correlating 'Charge Pump Routing', 'Shaft Rotation', 'Detail' (e.g., B&D, B&C), 'Displacement' (in cm³/r [in³/r]), and specific Part Numbers for 9 Tooth and 11 Tooth Output Shafts.
Page 12: Servo Controller Assemblies
Illustrates various 'Item 48 - Servo Controller Assemblies' with diagrams showcasing options such as 'Destroke Valve Option', 'Wide Band Neutral Spool Identification Mark', 'Neutral Lockout Switch Option', and 'Neutral Detent Option'.
Parts Lists
Page 4-5: Main Parts List
A comprehensive list of pump components is provided across these pages, detailing Item number, Part Number, Quantity, and Description. This includes standard parts, kits, and specific sub-assemblies.
Page 13-16: Servo Controllers Parts Lists
Detailed parts lists are provided for various configurations of 'Item 48 - Servo Controllers', including models like 72401-AA, -AD, -AE, -AF, -AG, -AH, -AR, -AS, and -AL, specifying components for each variant.
Page 17: Orifice Sizes Available
Lists 'Item 51, 52, or 53 - Orifice Sizes Available' in a table format, showing Part Numbers and corresponding Hole Diameters in mm [inches]. A diagram explains how to identify orifice size using the last two digits of the dash number stamped on the orifice face.
Drive Shaft Identification
Page 9: Drive Shaft Identification
Presents 'Item 31 - Drive Shaft Identification' with a diagram showing various drive shafts. Each shaft is labeled with its Input Drive teeth, Part Number, 'Where Used' application (e.g., Tandem Front Pump, Single Pump), and Output Drive teeth.
Contact Information
Eaton provides contact details for its Hydraulics division in Eden Prairie, MN, USA; Footscray, Victoria, Australia; and Baden-Baden, Germany. The document is copyrighted by Eaton Corporation in 2004.
Eaton Locations:
- USA: 14615 Lone Oak Road, Eden Prairie, MN 55344. Tel: 952 937-9800, Fax: 952 974-7722. Website: www.hydraulics.eaton.com
- Australia: 20 Rosamond Road, Footscray, Victoria 3011. Tel: (61) 3 9319 8222, Fax: (61) 3 9318 5714.
- Germany: Dr.-Reckeweg-Str. 1, D-76532 Baden-Baden. Tel: (49) 7221 682-0, Fax: (49) 7221 682-788.
