Related Manuals for Eaton 26 Series
Summary of Contents for Eaton 26 Series
- Page 1 No. 7-624 Eaton ® October,1995 Gear Pumps Repair Information Series 26 Model 26000 Single Gear Pumps...
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Page 2: Table Of Contents
Ordering Information ........................16 Introduction This manual provides service information for the Eaton model 26000 single gear pumps. Step by step instructions for the complete disassembly, inspection, and reassembly of the pumps are included. The following recommendations should be followed to insure successful repairs. -
Page 3: Identification
Series 26 - Model 26000 Single Gear Pumps Identification and Tools Required 26 0 01 - R Z A B 95 01 31 JB Serial Number Code: Product Number: Series Testers Initials 26 = Gear Pump ( SAE "A" Mount ) Day of Month (two digits) Month (two digits) Features... -
Page 4: Exploded View Drawing
Series 26 - Model 26000 Single Gear Pumps Parts Cap Screws Drawing Washer Front Plate Optional Drive Gear Retaining Assembly Ring Shaft seal Drive Gear Washer Assembly Righthand (CW) Rotation Pump Plug Drive Gear Assembly Body O-ring Backup Gasket Seal Cap Screws Wear Plate Washer... -
Page 5: Parts List
Series 26 - Model 26000 Single Gear Pumps Disassembly Parts List Item Repair Information - Model 26000 Description Qty. Work in a clean area; cleanliness is extremely important when Front plate Assembly repairing hydraulic pumps. Before disconnecting the lines, Backplate clean port area of pump. -
Page 6: Disassembly
Series 26 - Model 26000 Single Gear Pumps Disassembly 8 Remove idler gear assembly from body. 11 Remove back-up gasket and seal from wear plate by extracting with a o-ring tool. 9 To separate body from the plate it remained with, place drive gear assembly in gear pocket and tap protruding end with plastic hammer or rawhide mallet. -
Page 7: Reversibility
Series 26 - Model 26000 Single Gear Pumps Reversibility Changing Input Rotation of Pump Place pump in a protected jaw vise with shaft end up. 7 Hold o-ring in groove of front plate with petroleum jelly. Remove the eight cap screws. Reassemble front plate over drive shaft end, being careful not to damage shaft seal. -
Page 8: Inspection
Series 26 - Model 26000 Single Gear Pumps Inspection Inspect Parts for Wear Front plate and Backplate Inspection General 1 Oil groove in bushings in front plate should be in line with dowel pin holes and 180° apart. The oil grooves in the 1 Clean and dry all parts. -
Page 9: Reassembly
Series 26 - Model 26000 Single Gear Pumps Reassembly General Information Install new seal and new backup gasket into wear plate. It is important that the relationship of the backplate, body, wear Note in the middle of the backup gasket a flat section or plate and front plate is correct. - Page 10 Series 26 - Model 26000 Single Gear Pumps Reassembly 7 Install new o-ring in groove of backplate. 8 Make sure port orientation is correct and then slide backplate over gear shafts until dowel pins are engaged. 9 Secure with cap screws and new washers . Tighten cap screws evenly in a crisscross pattern 34 to 38 N•m [25 to 28 lbf•ft] torque.
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Page 11: Specific Backplate Parts List
Series 26 - Model 26000 Single Gear Pumps Specific Backplate Parts List Relief Valve Backplate Item Description Qty. Relief Valve Backplate O-ring 19A4 Relief Valve Assembly 19A3 19A2 19A1 Relief Valve 19A1 19A2 O-ring 19A3 Backup Ring 19A4 O-ring Disasembly and Reassembly Plug Assembly 1 After removing relief valve , remove and replace o-rings 19B1... - Page 12 Series 26 - Model 26000 Single Gear Pumps Specific Backplate Parts List Tandem Backplate Tandem Flow Divider Backplate Disasembly and Reassembly 1 Remove relief valve plug, shim, spring, and poppet from Item backplate. Do not remove internal relief valve seat. Seat is Description Qty.
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Page 13: Placing Pump Back Into Operation
Series 26 - Model 26000 Single Gear Pumps Placing Series 26 Gear Pump Back into Operation When test stand is available . Start Pump Mount Pump Connect Run For Test Stand Fluid Supply 3 Minutes Each Load Load Load Zero Intermittently Intermittently Intermittently... -
Page 14: Trouble Shooting
Series 26 - Model 26000 Single Gear Pumps Trouble Shooting Problem Possible Cause Correction Cavitation a. Oil too heavy. a. Change to proper viscosity b. Oil filter plugged. b. Clean filter. c. Suction line plugged or too small. c. Clean line and check size of line. Oil heating a. - Page 15 Series 26 - Model 26000 Single Gear Pumps Note Wear Plate Identification A product improvement has been made to the Model 26000 gear pump with a new designed wear plate. To identify the new wear plate, look for grooves placed in the seal side of the wear plate as shown below. New Groove Wear Plate Wear Plate...
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Page 16: Ordering Information
Products in this catalog are manufactured Eden Prairie, MN 55344 Scotland, KY7 4NW 40880 Ratingen, Germany in an ISO-9001-certified site. Telephone 612/937-9800 Telephone 01-592-771-771 Telephone 02102-406-830 Fax 612/937-7130 Fax 01-592-773-184 Fax 02102-406-800 Copyright Eaton Corporation, 1995 Form No. 7-624 All Rights Reserved Printed in USA...