Table of Contents
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Table of Contents
Related Manuals for Sauer Danfoss 45 Series
Summary of Contents for Sauer Danfoss 45 Series
- Page 1 Series 45 Frame G Open Circuit Axial Piston Pumps Service Manual...
- Page 2 Series 45 G Frame Open Circuit Axial Piston Pumps Service Manual Revisions HistoRy of Revisions Table of Revisions Date Page Changed Rev. December 2010 last New Back Page March 2003 First revision © 2010 Sauer-Danfoss. All rights reserved. Sauer-Danfoss accepts no responsibility for possible errors in catalogs, brochures and other printed material.
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Page 3: Table Of Contents
Series 45 G Frame Open Circuit Axial Piston Pumps Service Manual intRoDuCtion Overview ................................5 Safety precautions ............................5 Unintended machine movement ....................... 5 Flammable cleaning solvents....................... 5 Fluid under pressure..........................5 Personal safety............................5 Symbols used in Sauer-Danfoss literature..................... 6 General description ............................ - Page 4 Series 45 G Frame Open Circuit Axial Piston Pumps Service Manual tRoubLesHooting Excessive noise and / or vibration ......................18 Actuator response is sluggish........................18 System operating hot ..........................19 Low pump output flow ..........................19 Pressure or flow instability........................19 Pressure or flow instability (continued) ....................20 System pressure not reaching PC setting....................20 High inlet vacuum............................20 aDjustments...
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Page 5: Overview
Series 45 G Frame Open Circuit Axial Piston Pumps Service Manual Introduction oveRview This manual includes information for the installation, maintenance, and minor repair of the Series 45 frame G open circuit axial piston pumps.The manual includes a description of the units and their individual components, troubleshooting information, and minor repair procedures. -
Page 6: Symbols Used In Sauer-Danfoss Literature
Series 45 G Frame Open Circuit Axial Piston Pumps Service Manual Introduction symboLs useD in These symbols are in the illustrations and text of this manual. They communicate helpful saueR-Danfoss information at the point where it is most useful to the reader. LiteRatuRe In most instances, the appearance of the symbol itself denotes its meaning. -
Page 7: General Description
Series 45 G Frame Open Circuit Axial Piston Pumps Service Manual Introduction geneRaL DesCRiPtion Sauer-Danfoss Series 45 G Frame open circuit piston pumps convert input torque into hydraulic power. Rotational force is transmitted through the input shaft to the cylinder block.The input shaft is supported by tapered roller bearings at the front and rear of the pump and is splined into the cylinder block . -
Page 8: System Circuit
Series 45 G Frame Open Circuit Axial Piston Pumps Service Manual Introduction system CiRCuit The pump receives fluid directly from the reservoir through the inlet line. A screen placed in the inlet protects the pump from large contaminants.The output of the pump is directed to a PVG-32 multi-section load sensing directional control valve which directs fluid to the actuators in the system. -
Page 9: Technical General Specifications
Series 45 G Frame Open Circuit Axial Piston Pumps Service Manual Technical specifications geneRaL type of mounting sPeCifiCations SAE-C mounting flange. auxiliary mounting pad options SAE-A, SAE-B, SAE-B-B, SAE-C, SAE C-C Control options PC: Pressure Compensator LS: Load Sensing (with PC) Port options Inlet and system ports: SAE flanged ports, code 61 Inlet Code 62 outlet. -
Page 10: General Specifications (Continued)
Series 45 G Frame Open Circuit Axial Piston Pumps Service Manual Technical specifications model geneRaL Ratings sPeCifiCations Rating units g74b g90C (continued) Input speed minimum (rpm) continuous 2400 2200 maximum 2800 2600 Working pressure continuous bar [psi] 310 [4495] 260 [3770] maximum 400 [5800] 350 [5075]... -
Page 11: Hydraulic Parameters (Continued)
Series 45 G Frame Open Circuit Axial Piston Pumps Service Manual Technical specifications HyDRauLiC temperature range PaRameteRs (continued) Temperature limits minimum - 40° C [- 40° F] (intermittent, cold start) Continuous¹ 82° C [180° F] maximum 104° C [220° F] fluid viscosity Fluid viscosity limits Condition... -
Page 12: Displacement Limiter
Series 45 G Frame Open Circuit Axial Piston Pumps Service Manual Features DisPLaCement LimiteR Frame G Series 45 pumps are available Displacement limiter with an optional adjustable maximum displacement limiter.The adjustable stop limits the pump’s maximum displacement.The displacement change is 6.5 cc/turn [0.40 in³/turn ] of the displacement limiter adjustment screw. -
Page 13: Control Options
Series 45 G Frame Open Circuit Axial Piston Pumps Service Manual Features ContRoL oPtions The Series 45 Frames G have two possible control options, a Load sensing (LS) control with Pressure Compensator (PC) or a PC only control. operation Cross-section pump General The bias piston and spring (1) acts at all times to push the swashplate (2) to... -
Page 14: Control Options
Series 45 G Frame Open Circuit Axial Piston Pumps Service Manual Features ContRoL oPtions LS control Typical load-sensing control valve (continued) The LS control design matches pump Load Return pressure pressure flow with system demand.The LS control senses the flow demand of the system Tank as a pressure drop across the external Control valve (ECV). -
Page 15: Pressure Required Tools
Series 45 G Frame Open Circuit Axial Piston Pumps Service Manual Pressure measurement RequiReD tooLs The service procedures described in this manual can be performed using common mechanic’s hand tools. Special tools, if required are shown. Calibrate pressure gauges frequently to ensure accuracy. Use snubbers to protect gauges. PoRt LoCations anD The illustration below shows gauge port locations. -
Page 16: Initial Start-Up
Series 45 G Frame Open Circuit Axial Piston Pumps Service Manual Initial start-up procedures geneRaL Follow this procedure when starting-up a new Series 45 installation or when restarting an installation in which the pump has been removed. Warning Unintended movement of the machine or mechanism may cause injury to the technician or bystanders. -
Page 17: Fluid And Filter Recommendations
Series 45 G Frame Open Circuit Axial Piston Pumps Service Manual Fluid and filter maintenance ReCommenDations To ensure optimum life of Series 45 products, perform regular maintenance of the fluid and filter. Contaminated fluid is the main cause of unit failure.Take care to maintain fluid cleanliness when servicing. -
Page 18: Excessive Noise And / Or Vibration
Series 45 G Frame Open Circuit Axial Piston Pumps Service Manual Troubleshooting item Description action exCessive noise anD / Insufficient hydraulic fluid causes oR vibRation Check fluid level in reservoir. Fill the reservoir to proper level. cavitation. Air in system causes noisy, erratic Purge air and tighten fittings. -
Page 19: System Operating Hot
Series 45 G Frame Open Circuit Axial Piston Pumps Service Manual Troubleshooting item Description action system oPeRating Hot Insufficient volume of hydraulic Fill reservoir to proper level. Verify Check fluid level in reservoir. fluid will not meet cooling proper size of reservoir. demands of system. -
Page 20: Pressure Or Flow Instability (Continued)
Series 45 G Frame Open Circuit Axial Piston Pumps Service Manual Troubleshooting item Description action PRessuRe oR fLow Low LS setting may cause Adjust LS setting to proper level. instabiLity (continued) Check LS setting. instability. See Adjustments, page 21. Blocked LS signal line interferes Check LS signal line. -
Page 21: Pc Control
Series 45 G Frame Open Circuit Axial Piston Pumps Service Manual Adjustments PC ContRoL PC setting is indicated in the pump model code. Refer to the Series 45 Open Circuit Axial Piston Pumps Technical Information Manual, 520L0519, for more information. Warning Before performing adjustments, read page 14, Pressure... -
Page 22: Ls Control
Series 45 G Frame Open Circuit Axial Piston Pumps Service Manual Adjustments Ls ContRoL The LS setting is indicated in the pump model code. Refer to the Series 45 Open Circuit Axial Piston Pumps Technical Information Manual, 520L0519, for more information. Warning Escaping hydraulic fluid Before performing adjustments, read page 15,... -
Page 23: Minor Repair Shaft Seal Replacement
Series 45 G Frame Open Circuit Axial Piston Pumps Service Manual Minor repair sHaft seaL The Series 45 open circuit variable pumps use a lip-type shaft seal.You can replace this RePLaCement seal without major disassembly of the unit. Replacing the shaft seal requires removing the pump from the machine. -
Page 24: Auxiliary Pads
Series 45 G Frame Open Circuit Axial Piston Pumps Service Manual Minor repair auxiLiaRy PaDs You may install auxiliary mounting pads on pumps equipped with through-drive radial ported end caps. Follow these steps to either remove, replace, or exchange auxiliary mounting pads. -
Page 25: Control
Series 45 G Frame Open Circuit Axial Piston Pumps Service Manual Minor repair ContRoL Disassembly Control assembly 1. Remove the 4 screws (C300) holding C103 the control housing onto the inch end cap. t10.8 - 13.5 N•m C104 [8 - 10 lbf•ft] inch 2. -
Page 26: Control (Continued)
Series 45 G Frame Open Circuit Axial Piston Pumps Service Manual Minor repair ContRoL (continued) Reassembly Control assembly 13. Install the PC spool (C132), spherical C103 end first, into the PC bore. Using a inch new O-ring (C103A), install the plug t10.8 - 13.5 N•m (C103).Torque the plug (C103) to C104... -
Page 27: Plug And Fitting Sizes And Torques
Series 45 G Frame Open Circuit Axial Piston Pumps Service Manual Minor repair PLug anD fitting sizes If any plugs or fittings are removed from the unit during service, install and torque as anD toRques indicated here.This drawing is a composite.Your configuration may differ but here is the appropriate wrench size and torque: Plug locations, sizes, and torques K130... - Page 28 Products we o er: Sauer-Danfoss is a global manufacturer and supplier of high- quality hydraulic and electronic components. We specialize in • Bent Axis Motors providing state-of-the-art technology and solutions that excel in the harsh operating conditions of the mobile o -highway market. •...
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