Table of Contents
Advertisement
Quick Links
Advertisement
Table of Contents
Related Manuals for Eaton 70422
Summary of Contents for Eaton 70422
- Page 1 No. 6-631 Eaton ® January 1998 Medium Duty Piston Pump Parts and Repair Information Model 70422 or 70452 0 - 38 cm /r [0 - 2.32 in Displacement Model 70423 or 70453 0 - 45 cm /r [0 - 2.77 in...
-
Page 2: Table Of Contents
Fault - Logic Troubleshooting ................20 - 23 Introduction This manual provides service information for the Eaton Models 70422 or 70423 Pressure or Pressure - Flow Compensated Piston Pumps. Step by step instructions for the complete disassembly, inspection, and reassembly of the pump are given. The following recommendations should be followed to insure successful repairs. -
Page 3: Identification
Stamped on each units mounting flange. Single Pump - Product Number: A - Product Number Description 70422 = Single Piston Pump 7 0 4 2 3 - R A A 70452 = Single Piston Pump, w/ Aux. Flange 70423 = Single Piston Pump 70453 = Single Piston Pump, w/ Aux. -
Page 4: Parts Drawing
Model 70422 or 70423 Parts Drawing Pump drawn below is typical of a righthand (CW) rotation pump. 18 17 Serial code and assembly number location (Cover only) All left (CCW) or right (CW) directions given are viewed from the input shaft end of the pump. -
Page 5: Parts List
Model 70422 or 70423 Parts List Item Part No. Qty. Description ♦ Drive Shaft (Identification drawing on page #6) ♦ Backplate Assembly (Identification drawing on page #7 & 8) ♦ Housing Assembly (Identification drawing on page #12) 16238-11816 Bearing 16026-808 Roll Pin ♦... -
Page 6: Item 1 - Drive Shaft Id
Model 70422 or 70423 Item 1 - Drive Shaft Identification Item 1 Drive Shaft Identification Part Number Input Drive Output Drive 9 Tooth Internal 70402-201, 13 Tooth 70402-207, 15 Tooth 70402-204, 41 Tooth 22.2 [.875] Dia. Keyed External 9 Tooth... -
Page 7: Item 2 - Backplate Assembly
2-2-1 Lefthand Rotation Lefthand Rotation Righthand Rotation Righthand Rotation (CCW) (CCW) (CW) (CW) Item 2 - Model 70422 Parts List (0 - 38 cm /r [0 - 2.32 in /r] Displacement) Lefthand Righthand Rotation Rotation Item Part No. Part No. - Page 8 Model 70422 or 70423 Item 2 - Model 70423 Backplate Assembly (0 - 45 cm /r [0 - 2.77 in /r] Displacement) 2(b) Rear Porting Opposite Side Porting 2-2-1 (Loctited) Lefthand Rotation Righthand Rotation Lefthand Rotation Righthand Rotation (CCW) (CCW)
-
Page 9: Item 4 - Compensator Assembly And Parts List
Model 70422 or 70423 Item 4 - Compensator Assembly Pressure-Flow Compensator Pressure Compensator *4-11 *4-11 *4-11 Cover Cover Cover non-set non-set non-set 4(a) 4(b) 4(c) 70422-HU 70422-HY 70422-HR Lefthand (CCW) Pump Rotation Righthand (CW) Pump Rotation Fits Both Pump Rotations (Righthand (CW) rotation shown) *4-11, Cover not included with non-set compensator assy. - Page 10 Model 70422 or 70423 Item 4 - Compensator Parts List Item 4 - Parts List (Refer to drawings) Item Part No. Qty. Description 4(a) 70422-HU Non-Set Pressure-Flow Compensator Assembly, Lefthand Rotation 4(b) 70422-HY Non-Set Pressure-Flow Compensator Assembly, Righthand Rotation 4(c)
-
Page 11: Factory Pre-Set Compensator Assemblies
Model 70422 or 70423 Factory Pre-set Compensator Assemblies Pre-set Pressure-Flow Compensator Assemblies Non-Set Pre-set Assembly Assembly Pump Rotation Pressure Setting Flow Setting 70422-HU 70422-AY-03 Lefthand (CCW) 210±3.5 bar [3050±50 lbf/in 13.8±0.7 bar [200±10 lbf/in 70422-HU 70422-BH-03 Lefthand (CCW) 191±2.1 bar [2770±30 lbf/in 15.2±0.7 bar [220±10 lbf/in... -
Page 12: Item 3 - Housing Identification
Item 5 - Rotating Kit Assembly Item Part No. Qty. Description 70402-638 Model 70422 Rotating Kit Assembly 0 - 38 cm /r [0 - 2.32 in /r] Disp. 70423-617 Model 70423 Rotating Kit Assembly 0 - 45 cm /r [0 - 2.77 in /r] Disp. -
Page 13: Mounting Kits
Model 70422 or 70423 Mounting Kits Kit 2, Gear Pump Mounting K2-3 (To Mount "A" SAE flanges) Item Part No. Qty. Description 70442-929 Gear Pump Mounting Kit K2-1 16007-14 O-ring, 1.59 mm Dia. x 82.55 mm ID. [.0625 in. Dia. x 3.25 in. ID.]... -
Page 14: Product Number
Model 70422 or 70423 Product Number This list of product numbers is to aid in Item identification. If your product number is not listed contact your Eaton representitive. Model 70422, Lefthand Rotation (CCW) Description of Part Number Product Drive Shaft Backplate Assy. - Page 15 Model 70422 or 70423 Product Number This list of product numbers is to aid in Item identification. If your product number is not listed contact your Eaton representitive. Model 70423, Lefthand Rotation (CCW) Description of Part Number Product Drive Shaft Backplate Assy.
-
Page 16: Repair Information
Model 70422 or 70423 Repair Information Cleanliness is extremely important when repairing should not be removed without compressing the these pumps. Work in a clean area. Before spring. disconnecting the lines clean port area of pump. The following parts will be needed to disassemble the... -
Page 17: Inspection
Model 70422 or 70423 Repair Information ATTENTION: Removal of the adjusting screw covers 5 Examine the spider (5-2). It should be flat, no from cap may void the warranty on this assembly. cracks, and no signs of wear in the pivot area. - Page 18 Model 70422 or 70423 Repair Information pivot bearing (25). Install trunnion covers (20) and adjustment cap (4-18) with new o-ring (4-17) into secure with retaining rings (11). compensator housing (4-1). Torque plug (4-19) 8 to 11 N-m [6 to 8 lb-ft] and torque flow adjustment cap 5 Install retaining ring (10) on shaft (1).
-
Page 19: Start-Up Procedure
Model 70422 or 70423 Start - up Procedure When initially starting a rebuilt load sensing system, 5 Replace the coil wire or return the fuel flow to the it is extremely important that the start-up procedure injectors and start the engine. Run at low idle speed be followed. -
Page 20: Fault - Logic Troubleshooting
Model 70422 or 70423 Fault - Logic Troubleshooting This fault - logic troubleshooting guide is a diagnostic aid in locating pump problems. Symptom: Match the pump systems with the problem Action statements and follow the action steps shown in the Step box diagrams. - Page 21 Model 70422 or 70423 Fault - Logic Troubleshooting Symptom: System will not Develop Proper Pressure or Flow Check Check Inspect Inspect Oil Level in Hyd. Fluid Inlet Screen Compensator Reservoir Specs or Strainer Signal Below Level Improper Clogged Fill to...
- Page 22 Model 70422 or 70423 Fault - Logic Troubleshooting Symptom: Pump Noisy or Overheating Check Check Inspect Replace Oil Level in Hyd. Fluid Inlet Screen Pump Reservoir Specs or Strainer Below Level Improper Clogged Fill to Install Clean Proper Proper Level...
- Page 23 Model 70422 or 70423 Fault - Logic Troubleshooting Diagram Action Step Comments 1. Check Oil Level in Reservoir: A. Fill to proper level. 2. Check Hydraulic Fluid Specifications: A. Consult owner/operators manual for the proper type fluid. 3. Inspect Inlet Screen or Strainer for: A.
- Page 24 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, 1993 Form No. 6-631 All Rights Reserved May, 1993 Printed in USA...