SANY SY50U Operation And Maintenance Manual
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SANY SY50U Operation And Maintenance Manual

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Operation and Maintenance Manual
SY50U Excavator
service@sanyamerica.com
SANY Part Number SSY005082347

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Summary of Contents for SANY SY50U

  • Page 1 Operation and Maintenance Manual SY50U Excavator service@sanyamerica.com SANY Part Number SSY005082347...
  • Page 2 This Page Intentionally Left Blank...
  • Page 3 SY50U Excavator OMM SY50U Excavator Operation and Maintenance Manual WARNING! Read and understand all safety precautions and instructions in this manual and on the machine labels before operating or maintaining it. Failure to follow safety messages could result in death or serious injury. Keep this manual with the machine for future reference.
  • Page 4 Wash hands after handling. © 2020 by SANY. All rights reserved. No part of this publication may be reproduced, used, distributed, or disclosed except for normal operation and maintenance of the machine as described herein. All information included within this publication was accurate at the time of publication.

  • Page 5: Table Of Contents

    SANY Contact Information........
  • Page 6 Table of Contents SY50U Excavator OMM Escape Tool ..............2-6 Fire Safety .
  • Page 7 SY50U Excavator OMM Table of Contents System Unlocked Screen........... 3-15 Reserved Function .
  • Page 8 Table of Contents SY50U Excavator OMM Sound Mode Adjustment ........... 3-42 Time Adjustment .
  • Page 9 SY50U Excavator OMM Table of Contents Left Joystick – BHL Mode ..........3-30 Right Joystick –...
  • Page 10 Table of Contents SY50U Excavator OMM Seat Weight Suspension Adjustment..........4-14 Seat Belt .
  • Page 11 SANY-Approved Lubricants ........
  • Page 12 Table of Contents SY50U Excavator OMM Inspection and Maintenance in Adverse Environments ....... . 5-7 Mud, Rain, or Snow Conditions .
  • Page 13 SY50U Excavator OMM Table of Contents Inspect and Tighten the Windshield Wiper Arm Nut ......5-25 Fuses .
  • Page 14 Table of Contents SY50U Excavator OMM Check the Track Tension ........... 5-55 Adjust the Track Tension .
  • Page 15 SANY Contact Information........

  • Page 16: Introduction

    Continuing improvements in the design of this machine can lead to changes which may not be covered in this manual. Contact a SANY dealer for the latest available information on the machine or to answer any questions regarding information in this manual.

  • Page 17: Documentation Package

    SY50U Excavator OMM Introduction DOCUMENTATION PACKAGE This documentation applies only to this machine and should not be used with any other machine. The documentation for this machine includes the following items: Operation and Maintenance Manual A copy of this manual must be stored in the machine or be accessible to the operator at all times. If the machine is sold, a copy of this manual must be provided to the new owner.

  • Page 18: Organization Of This Manual

    SY50U Excavator OMM ORGANIZATION OF THIS MANUAL Introduction Contains an overview of this manual, serial number information, and SANY contact information. Safety Hazard alerts used throughout the manual are explained. General and product-specific safety information is provided for this manual.

  • Page 19: Machine Applications

    This excavator can also operate a variety of optional equipment. SANY assumes no responsibility for any consequence caused by use outside this specified range. Machine Directions In this manual, the front, back, left, and right directions indicate the moving direction when viewed from the operator seat.

  • Page 20: Serial Number Location

    SERIAL NUMBER LOCATION Product identification plates are located in various places on the excavator. These list model and serial numbers that will be needed by a SANY dealer when ordering replacement parts or providing assistance for your machine. Product Identification Plate 0003139 Fig.

  • Page 21: Swing Motor Identification Plate

    SY50U Excavator OMM Introduction Swing Motor Identification Plate 0003140 Fig. 1-4 The identification plate is on the top of the swing motor. Engine Identification Plate 0003138 Fig. 1-5 The identification plate is on the top of the engine. SANY Operation and Maintenance Manual — 0120...

  • Page 22: Hydraulic Pump Identification Plates

    Introduction SY50U Excavator OMM Hydraulic Pump Identification Plates Fig. 1-6 0003169 The identification plate is on the bottom of the hydraulic pump. Travel Motor Identification Plate 0003188 Fig. 1-7 An identification plate is on each travel motor. Remove the cover plates to access the travel motors.

  • Page 23: Sany Contact Information

    SY50U Excavator OMM Introduction SANY CONTACT INFORMATION SANY 318 Cooper Circle Peachtree City, GA 30269 www.sanyamerica.com Phone: 470-552-SANY (7269) Find a dealer go to: www.sanyamerica.com/find-a-dealer RECORD OF SERIAL NUMBER AND DEALER INFORMATION Use this table to record the product information related to this machine.

  • Page 24: Correction Request Form

    Introduction SY50U Excavator OMM CORRECTION REQUEST FORM If you find a problem with this manual, make a copy of this page, complete the form below, and send it to SANY. Correction Request Form Date of This Notification Your Name Company Name...

  • Page 25: Glossary Of Acronyms

    SY50U Excavator OMM Introduction GLOSSARY OF ACRONYMS ANSI – American National Standards Institute BHL – Backhoe Loader DEF – Diesel Exhaust Fluid DPF – Diesel Particulate Filter ECM – Engine Control Module GPS – Global Positioning System HEST – High Exhaust System Temperatures ISO –...
  • Page 26 Introduction SY50U Excavator OMM This Page Intentionally Left Blank 1-12 SANY Operation and Maintenance Manual — 0120...

  • Page 27: Safety

    SY50U Excavator OMM Safety Safety General Safety..............2-3 Hazard Alerts in This Manual .
  • Page 28 Safety SY50U Excavator OMM Inclined Areas ............2-12 Snow or Frozen Surfaces .

  • Page 29: General Safety

    Contact a SANY dealer for replacement decals if needed. NOTE: When replacing decals, make sure they are placed in the proper locations. Contact a SANY dealer if you have any questions about their meaning and placement.

  • Page 30: Operator Safety Information

    Inspect the operator aids of this machine daily and make sure each operator aid is in normal working condition. Any faults found shall be reported to a SANY dealer. Stop all work immediately if any operator aid is not working properly.

  • Page 31: Mount And Dismount The Machine

    This excavator is a multipurpose construction machine used primarily for digging or loading earth and stones. It can also be used for grading, slope-trimming, lifting, breaking, demolishing, and trenching. It can perform the functions of a bulldozer, loader, and a crane. SANY assumes no responsibility for any consequence caused by use outside this specified range.

  • Page 32: Unauthorized Machine Modifications

    Electrical Fires Short circuits, damaged wiring, or overcharging batteries can cause fires. Observe the following: • Check the wiring on the machine for damage when doing a prestart check. Contact a SANY dealer to repair or replace any damaged wiring. •...

  • Page 33: In Case Of Fire

    SY50U Excavator OMM Safety In Case of Fire If a fire occurs on the machine: 1. Immediately press the emergency stop switch to shut down the machine. Never continue operating the machine. 2. Get clear of the machine and immediately call for help. Always have a list of emergency phone numbers available.

  • Page 34: Maintenance Safety

    SY50U Excavator OMM MAINTENANCE SAFETY SANY cannot foresee every circumstance that might involve a hazard in operation or maintenance. Therefore, the hazard alerts in this manual and on the machine may not include all possible safety precautions. Make sure all procedures and actions can be safely performed without damaging the machine or causing injury.

  • Page 35: Lockout/Tagout Procedure

    SY50U Excavator OMM Safety Lockout/Tagout Procedure Perform the lockout/tagout procedure before servicing the machine. Cleaning the Machine Always use hot water and mild, nonflammable, grease-cutting soaps or cleaning agents to clean the machine. Never use flammable or caustic cleaning agents.

  • Page 36: Accumulator

    If the accumulator needs service, contact a SANY dealer. Electrical System Always clean the electrical system using only SANY-approved electrical cleaners. Never use caustic soaps, high-pressure water, or steam cleaners to clean the electrical system. These could damage the system or cause intermittent system failures.

  • Page 37: Job Safety

    SY50U Excavator OMM Safety JOB SAFETY It is the owner’s/operator’s responsibility to replace any safety decals that are damaged or missing from the machine. Never leave the machine running while it is unattended. Always park the machine in a safe, level area, lower any work equipment to the ground, move the hydraulic lockout control lever to locked (closed) position, and shut down the engine before exiting.

  • Page 38: Travel And Operation Precautions

    Safety SY50U Excavator OMM Travel and Operation Precautions Confirm the relative positions of the undercarriage and operator before operating the machine. Traveling with the machine may present hazards. When traveling with the machine, always travel in a safe, controlled manner, and remain alert at all times. Be sure the areas around the machine are clearly visible.

  • Page 39: Avoid Backover Accidents

    SY50U Excavator OMM Safety Avoid Backover Accidents Keep the windows, mirrors, and lights clean and in good condition. Before moving the machine, make sure all bystanders are clear of the intended path. Before moving the machine, warn others with the horn.

  • Page 40: Precautions In High-Voltage Areas

    Safety SY50U Excavator OMM Precautions in High-Voltage Areas WARNING! Overhead power lines carry high-voltage electricity that can discharge to the ground through the machine, even without direct contact with the machine’s structure. Avoid direct contact with high-voltage power lines while operating. High-voltage contact could result in equipment damage, death, or serious injury.

  • Page 41: Machine Controls

    SY50U Excavator OMM Machine Controls Machine Controls Machine Overview ............. . . 3-3 Monitor.
  • Page 42 Machine Controls SY50U Excavator OMM Windshield Washer Switch........... . . 3-23 Windshield Wiper Switch .

  • Page 43: Machine Overview

    SY50U Excavator OMM Machine Controls MACHINE OVERVIEW Fig. 3-1 0001462 1) Arm cylinder 10) Idler 2) Boom 11) Dozer blade 3) Boom swing cylinder 12) Dozer blade cylinder 4) Cab 13) Boom pivot 5) Carrier roller 14) Boom cylinder 6) Sprocket...

  • Page 44: Monitor

    Machine Controls SY50U Excavator OMM MONITOR The monitor displays machine operating information and provides access to change system parameters. Daily Maintenance Information Screen When the key switch is turned to ON, the monitor displays the Daily Maintenance Information screen. The screen lists 7 steps that need to be confirmed complete before starting the machine.

  • Page 45: Maintenance Information Screen

    SY50U Excavator OMM Machine Controls Maintenance Information Screen If maintenance is required, the Maintenance Information screen will display instead of the Daily Maintenance screen. 1. Press the button below the pause icon (1) to scroll through the intervals of the required maintenance.
  • Page 46 Machine Controls SY50U Excavator OMM Item Home Screen Display Function Description Time and date Displays the current time and date. Date (YY/MM/DD) and Time (HH/MM/SS) Preheat icon Indicates the engine is in preheating mode. Battery discharge icon When illuminated, indicates the battery is discharging.

  • Page 47: Function List Screen

    1. Press the button below the left/right arrow icon (1) to scroll to and highlight the selected icon. 2. Press the button below the gear icon (2) to display the system setup screen, which is also password-protected for use by SANY only. 3. Press the button below the check-mark icon (3) to confirm the selected icon.

  • Page 48: System Information Screen

    Machine Controls SY50U Excavator OMM System Information Screen Access to the Main Menu screen requires entering the password “31868” on the system information screen: • Press the button below the up/down arrow icon (1) to scroll to the desired number.

  • Page 49: Operation Information Screen

    SY50U Excavator OMM Machine Controls • Maintain Table – Displays when the machine is due for maintenance. If maintenance is not needed, the Maintain Table screen will not open. The Maintain Table screen is also used to reset the service timer. See “Maintenance Information Screen”...

  • Page 50: Switch Signals Screen

    Machine Controls SY50U Excavator OMM Switch Signals Screen The Switch Signals screen enables the operator to monitor the input and output of switch functions: • Press the button below the up/down arrow icon (1) to scroll to the next page.

  • Page 51: Machine Configuration Screen

    • Press the button below the return icon (1) to return to the previous screen. NOTE: SPN and FMI codes are engine internal diagnostic failure codes. • Contact a SANY dealer for troubleshooting information. Fig. 3-12 0003822 3-11 SANY Operation and Maintenance Manual — 0120...

  • Page 52: Global Positioning System (Gps) Information Screen

    Machine Controls SY50U Excavator OMM Global Positioning System (GPS) Information Screen NOTE: The GPS Information screen display is not used in North America at this time. Press the button below the return icon (1) to return to the previous screen.

  • Page 53: Maintain Table Screen

    • Brush cutter (8) NOTE: Check the work tool operator manual or contact a SANY dealer for hydraulic flow rate information. • Press the button below the left/right arrow icon (9) to scroll to and illuminate the selected work tool icon.

  • Page 54: Flow Rate Information Screen

    Machine Controls SY50U Excavator OMM Flow Rate Information Screen NOTICE! Check the work tool operator manual for hydraulic flow rate information and follow all optional equipment information and safety precautions. The Flow Rate information screen displays the flow rate, from 0% to 100%, of the hydraulic work tool selected in the Operating Mode screen: •...

  • Page 55: Flow Rate Setting Screen

    SY50U Excavator OMM Machine Controls Flow Rate Setting Screen The Flow Rate Setting screen displays the one-way flow circuit information of the operating mode for the hydraulic work tool selected in the Flow Rate Information screen. NOTE: • Check the work tool operator manual for hydraulic flow rate information.

  • Page 56: Quick Coupler Control Screen

    Machine Controls SY50U Excavator OMM Quick Coupler Control Screen • Not used at this time; reserved for future function. Fig. 3-18 0003829 Date and Time Setup Screen The Date and Time Setup screen is accessed by selecting the Time Calibration icon on the Function List screen.

  • Page 57: Diesel Particulate Filter (Dpf) Screens

    SY50U Excavator OMM Machine Controls Diesel Particulate Filter (DPF) Screens WARNING! • The exhaust temperature during regeneration can reach approximately 1100°F (600°C). Make sure there are no flammable materials around the exhaust system or machine. Do not touch any part of the exhaust system.
  • Page 58 (5) will illuminate steadily. NOTICE! If the red engine stop lamp (8) illuminates, shut down the engine immediately. Contact a SANY dealer for further information. Failure to follow this notice could damage the machine or cause it to operate improperly.

  • Page 59: Switches

    SY50U Excavator OMM Machine Controls SWITCHES Fig. 3-22 0002975 1) Left joystick switch (page 3-20) 7) Travel alarm switch (page 3-22) 2) Left joystick button (Not used) 8) Windshield washer switch (page 3-23) 3) Right joystick–horn button (page 3-21) 9) Windshield wiper switch (page 3-23)

  • Page 60: Joystick Switches

    Machine Controls SY50U Excavator OMM Joystick Switches Left Joystick Switch Move the left joystick switch (2) to the left (1) for medium flow and medium pressure of the left auxiliary hydraulic lines. Move the left joystick switch to the right (3) for medium flow and medium pressure of the right auxiliary hydraulic lines.

  • Page 61: Horn Button

    SY50U Excavator OMM Machine Controls Horn Button The horn button (1) is on the bottom of the right joystick. Press the horn button to sound the horn. Fig. 3-25 0002827 Throttle Control Dial The throttle control dial (1) is used to adjust the engine speed.

  • Page 62: Key Switch

    Machine Controls SY50U Excavator OMM Key Switch The key switch (1) is used to start or stop the engine. There are three positions on the key switch: • OFF: When the key switch is turned to OFF, the engine is shut down, power to the electrical system is shut off, and the key can be removed or inserted.

  • Page 63: Windshield Washer Switch

    SY50U Excavator OMM Machine Controls Windshield Washer Switch Press the windshield washer switch (1) to spray washer fluid on the windshield to clean it. 0002978 Fig. 3-29 Windshield Wiper Switch NOTICE! Before cleaning a dry windshield, press the windshield washer switch to spray washer fluid on the windshield and prevent damage to the wiper blade.

  • Page 64: Emergency Stop Switch

    Machine Controls SY50U Excavator OMM There are two work lights: • One work light (2) on the boom. Fig. 3-32 0002979 • One work light (3) on the cab roof. Fig. 3-33 0002980 Emergency Stop Switch If a quick shutdown is required or the engine cannot be stopped normally, push the emergency stop switch (1).

  • Page 65: Battery Disconnect Switch

    SY50U Excavator OMM Machine Controls Battery Disconnect Switch The battery disconnect switch (1) is located in the right front access compartment. Turn the switch to OFF to isolate the battery from the electrical system when securing the machine for the day, or as needed for maintenance.

  • Page 66: Dome Light Switch

    Machine Controls SY50U Excavator OMM Dome Light Switch The dome light switch (1) is used to turn the dome light (2) on and off. NOTE: The cab light can be turned on only when the key switch is in the ON or START position.

  • Page 67: Controls

    SY50U Excavator OMM Machine Controls CONTROLS Fig. 3-38 0002973 1) Dozer blade control lever (page 3-28) 6) Hydraulic lockout control lever (page 3-32) 2) Right joystick (page 3-29) 7) Left travel control pedal (page 3-33) 3) Left joystick (page 3-29)

  • Page 68: Dozer Blade Control Lever

    Machine Controls SY50U Excavator OMM Dozer Blade Control Lever The dozer blade control lever (1) is located on the right side of the operator seat: • Push the lever forward (2) to lower the dozer blade. • Pull the lever backward (3) to raise the dozer blade.

  • Page 69: Joystick Controls

    SY50U Excavator OMM Machine Controls Joystick Controls WARNING! Prevent unexpected movement of the machine. Know the positions and functions of both joysticks before operation. Failure to follow this warning could result in death or serious injury. NOTE: There are two operating modes available for the joystick controls, the society of automotive engineers (SAE) mode and the backhoe loader (BHL) mode.

  • Page 70: Joystick Bhl Mode

    Machine Controls SY50U Excavator OMM Joystick BHL Mode Left Joystick – BHL Mode The BHL mode uses the left joystick to control the boom and upper structure: • Swing the upper structure to the left (1) • Boom down (2) •...

  • Page 71: Pattern Change (Sae/Bhl) Valve

    SY50U Excavator OMM Machine Controls Pattern Change (SAE/BHL) Valve NOTICE! Shut the engine down before adjusting the pattern change (SAE/BHL) valve. Failure to do so can cause damage to the machine, personal property, and the environment, or cause the machine to operate improperly.

  • Page 72: Hydraulic Lockout Control Lever

    If any part of the machine moves when the hydraulic lockout control lever is in the locked (closed) position, shut down the engine immediately. Contact a SANY dealer to solve this problem. NOTE: Keep all the control levers in a neutral position and move the hydraulic lockout control lever to the unlocked (open) position.

  • Page 73: Directional Arrow

    SY50U Excavator OMM Machine Controls Directional Arrow The directional arrow (1) on each of the track frames indicates forward movement of the machine. Check these arrows before using the travel control levers/pedals. The track sprocket is at the rear of the track frame.

  • Page 74: Boom Swing Control Pedal

    Machine Controls SY50U Excavator OMM Boom Swing Control Pedal WARNING! Do not place your foot on the boom swing control pedal except when using it for boom swing operation. Failure to follow this warning could result in death or serious injury.

  • Page 75: Windshield

    SY50U Excavator OMM Machine Controls WINDSHIELD The windshield (1) can be opened and stored in the roof of the cab. Fig. 3-52 0002985 Opening the Windshield WARNING! • Avoid sudden movement of the machine or work equipment. • Always place the hydraulic lockout control lever in the locked (closed) position before leaving the cab.

  • Page 76: Closing The Windshield

    Machine Controls SY50U Excavator OMM CAUTION! When open, the windshield must be secured to the roof of the cab. If it is not secured, the windshield may slide down unexpectedly and result in injury or machine damage. 3. Inside the cab, grasp the left and right grips (3) and press down on the latches (2) with your thumbs.

  • Page 77: Lower The Windshield

    SY50U Excavator OMM Machine Controls CAUTION! • Avoid placing hands where they could be injured by the closing windshield. • Close the windshield slowly. Failure to follow these precautions could result in injury. 3. Grasp the left and right grips (3) and press down on the latches (2) with your thumbs.

  • Page 78: Heating And Air Conditioning System

    Machine Controls SY50U Excavator OMM HEATING AND AIR CONDITIONING SYSTEM Control Panel Fig. 3-58 0002995 Item Control Operation Function Temperature Turn to the right. Increases the temperature inside the cab. adjustment dial Turn to the left. Decreases the temperature inside the cab.

  • Page 79: Heating And Air Conditioning System Operation

    SY50U Excavator OMM Machine Controls Heating and Air Conditioning System Operation NOTICE! • If water gets on the control panel, a failure may result. • Always keep this component free from water. Failure to follow this notice could result in damage to the machine, personal property, or cause the machine to operate improperly.

  • Page 80: Radio

    Machine Controls SY50U Excavator OMM RADIO Control Panel Fig. 3-59 0002996 Button or Item Operation Function Display PRESET Press and release. Plays the station stored at each button. STATION Press and hold. Stores the selected radio station. See “Presetting Radio Stations”...

  • Page 81: Radio Operation

    SY50U Excavator OMM Machine Controls Radio Operation WARNING! Turn the radio volume down to a level that allows you to hear traffic signals such as a horns, sirens, and bystanders. Failure to follow this warning could result in death or serious injury.

  • Page 82: Searching Radio Stations

    Machine Controls SY50U Excavator OMM Searching Radio Stations Press the power switch (5) to turn the radio on. The radio frequency is displayed on the LCD (2). Manual Tuning Press and hold tuning buttons (3 or 4). Release the button and then use the tuning buttons to manually tune the radio until the desired radio frequency appears on the LCD.

  • Page 83: Time Adjustment

    SY50U Excavator OMM Machine Controls Time Adjustment 1. Press the TIME button (1) to display the current time on the LCD (2). The display will return to radio frequency after 5 seconds. 2. To set the hours, press and hold the time button down while the time is being displayed until the hour numbers flash and a beep is heard.

  • Page 84: Escape Tool

    Machine Controls SY50U Excavator OMM ESCAPE TOOL If the cab door or windshield cannot be opened during an emergency, the escape tool (1) can be used to break a window. Fig. 3-64 0002988 FIRE EXTINGUISHER NOTICE! • Always keep a fire extinguisher in the machine.

  • Page 85: Machine Operation

    SY50U Excavator OMM Machine Operation Machine Operation Work Area ..............4-4 General Job Safety .
  • Page 86 Machine Operation SY50U Excavator OMM Inspection after Engine Shutdown ..........4-22 Moving the Machine.
  • Page 87 SY50U Excavator OMM Machine Operation Cold Weather Operation ............4-46 Operation in Cold Weather .

  • Page 88: Work Area

    Machine Operation SY50U Excavator OMM WORK AREA The work area is where the actual job is performed. Within the work area are hazard areas. Hazard areas immediately surround the machine where personnel may be at risk due to the machine’s operation and movement.

  • Page 89: Prestart Checks And Adjustments

    Check the bucket or optional equipment for damage. • Clean and check the mirrors and side mirrors for damage. If repairs are needed, contact a SANY dealer. Adjust the mirrors so the area behind the machine is visible from the operator seat.

  • Page 90: Fluid Level Checks

    NOTICE! If the overflow tank is empty, there may be an engine coolant leak. Inspect for engine coolant leaks. If a leak is not found, check the engine coolant level in the radiator. Contact a SANY dealer for additional information.

  • Page 91: Engine Oil Level Check

    6. Add clean engine oil through the filler port (4) until the oil level is at the upper mark of the dipstick. Always use SANY-approved engine oil. See “Engine Oil Viscosity/ Temperature Data” on page 5-12. NOTE: If the oil level is above the upper mark on the dipstick, drain the excess oil.

  • Page 92: Fuel Level Check

    Machine Operation SY50U Excavator OMM Fuel Level Check 1. Turn the key switch to the ON position to activate the monitor. See “Key Switch” on page 3-22. Check the fuel level on the monitor. 2. Turn the key switch to the OFF position.

  • Page 93: Fuel Tank Filler Cap

    SY50U Excavator OMM Machine Operation Fuel Tank Filler Cap NOTICE! Make sure the O-ring in the filler cap is clean. If the O-ring is contaminated by dirt or debris, the O-ring will be damaged, preventing the filler cap from sealing properly.

  • Page 94: Check And Drain The Fuel/Water Separator

    Machine Operation SY50U Excavator OMM Check and Drain the Fuel/Water Separator WARNING! • Fuel or fuel vapors that come into contact with hot surfaces or electrical components can cause a fire. • Never service the fuel system near an open flame or while smoking.

  • Page 95: Check The Hydraulic Oil Level

    SY50U Excavator OMM Machine Operation Check the Hydraulic Oil Level 1. Position the work equipment as shown on the hydraulic tank decal. (See Figure 4-7.) 2. Prepare the machine for service. See “Maintenance Safety” on page 2-8. Fig. 4-7 0002925 3.

  • Page 96: Windshield Washer Fluid Check And Fill

    Machine Operation SY50U Excavator OMM Windshield Washer Fluid Check and Fill Prepare the machine for service. See “Maintenance Safety” on page 2-8. Open the engine hood and right rear access door. See “Opening the Engine Hood” on page 5-21 and “Opening the Right Rear Access Door”...

  • Page 97: Electrical Components Check

    NOTICE! • If fuses fail frequently, the wiring harness must be inspected for broken or damaged wire insulation or a component placing a high electrical load on the system. Contact a SANY dealer for additional information. • The top of the battery must be kept clean to prevent plugging of the battery vents.

  • Page 98: Seat And Seat Belt

    Machine Operation SY50U Excavator OMM SEAT AND SEAT BELT This machine has an operator seat with seat position, seat backrest, and seat weight suspension adjustments. Seat Position Adjustment When seated, lift the position adjustment lever (4) located on the front lower edge of the seat. Slide the seat forward or backward to the desired position and release the lever to lock the seat in place.

  • Page 99: Buckle The Seat Belt

    Press the red button on the buckle (1) to release the latch plate. WARNING! Contact a SANY dealer if the seat belt fails any of these checks, or fails to fasten or unfasten. Failure to follow this warning could result in death or serious injury. 4-15 SANY Operation and Maintenance Manual —...

  • Page 100: Mirror Adjustment

    Machine Operation SY50U Excavator OMM MIRROR ADJUSTMENT 1. Loosen the fasteners (1) that secure the mirror (2) to the arm and rail. 2. Adjust the mirror for the best visibility to the rear of the machine and tighten the fasteners.

  • Page 101: Starting The Engine

    SY50U Excavator OMM Machine Operation STARTING THE ENGINE WARNING! • Before starting the engine or leaving the operator seat, make sure the hydraulic lockout control lever is in the locked (closed) position. If the hydraulic system is not locked, unintentional machine operation may occur.
  • Page 102 • If the engine fails to start after 15 seconds, stop and allow the starter motor to cool for at least 2 minutes before attempting another start. • If the engine fails to start after five attempts, contact a SANY dealer. Failure to follow this notice could damage the machine or cause it to operate improperly.

  • Page 103: Idling The Engine

    • If the engine fails to start after 15 seconds, stop and allow the starter motor to cool for at least 2 minutes before attempting another start. • If the engine fails to start after five attempts, contact a SANY dealer. Failure to follow this notice could damage the machine or cause it to operate improperly.

  • Page 104: Warm-Up Operation

    Machine Operation SY50U Excavator OMM NOTE: If the engine fails to start after preheating, wait at least 2 minutes before repeating the process. 4. After the engine starts, check monitor display for faults or errors. 5. Allow the engine to idle until the engine coolant temperature reaches the normal operating range before using the machine.

  • Page 105: New Machine Break-In

    SANY recommends a break-in period of 100 service hours for a new machine. Properly breaking-in a new machine is crucial for long service life by allowing time for internal engine parts to break-in.

  • Page 106: Engine Shutdown

    Machine Operation SY50U Excavator OMM ENGINE SHUTDOWN NOTICE! • Stopping the engine before it cools can accelerate engine component wear. Never abruptly shut down the engine except in an emergency. • Never stop the engine suddenly when it is overheated. Run the engine at low idle to allow it to cool down gradually before shutting it down.

  • Page 107: Moving The Machine

    SY50U Excavator OMM Machine Operation MOVING THE MACHINE Directional Arrow The directional arrow (1) on each of the track frames indicates forward movement of the machine. Check these arrows before using the travel control levers/pedals. The track drive sprocket is at the rear of the track frame.

  • Page 108: Travel Controls

    Machine Operation SY50U Excavator OMM Adjust the throttle control dial (1) to MAX (high idle). 0002783 Fig. 4-21 Travel Controls Forward Travel Push both travel control levers forward or press the top of both foot pedals equally to move the machine forward.

  • Page 109: Left Turn

    SY50U Excavator OMM Machine Operation Left Turn Push the right travel control lever (1) forward or press the top of the right pedal and leave the left travel control lever in the neutral position to turn the machine to the left.

  • Page 110: Work Equipment Control And Operation

    Machine Operation SY50U Excavator OMM WORK EQUIPMENT CONTROL AND OPERATION NOTE: The joysticks will return to the neutral position when released and the work equipment holds its position. • There are two operating modes available for the joystick controls: Society of Automotive Engineers (SAE) mode, and Backhoe Loader (BHL) mode.

  • Page 111: Boom Control-Bhl Mode

    SY50U Excavator OMM Machine Operation Boom Control—BHL Mode To raise the boom, pull the left joystick. To lower the boom, push the left joystick. 0003058 Fig. 4-30 Swing Control To swing the upper structure to the right, move the left joystick to the right.

  • Page 112: Boom Swing Control Pedal

    Machine Operation SY50U Excavator OMM Boom Swing Control Pedal The boom swing control pedal is mounted on the cab floor to the right of the travel controls. The boom swing control pedal swings the boom to the right or left.

  • Page 113: Restricted Operation

    SY50U Excavator OMM Machine Operation RESTRICTED OPERATION WARNING! • Use caution when operating work equipment while the machine is traveling. • When the engine auto idle is on, moving any control lever increases the engine speed. • Avoid sudden stops when operating work equipment. Hydraulic shock can damage the hydraulic system.

  • Page 114: Never Use Swing Force

    Machine Operation SY50U Excavator OMM Never Use Swing Force Never use swing force to compact the ground or to break objects. Such operation is very dangerous and may reduce the service life of the machine. 0002846 Fig. 4-37 Never Use Traveling Force Never use the machine’s traveling force to cut the bucket...

  • Page 115: Never Operate Using Machine Weight

    SY50U Excavator OMM Machine Operation Never Operate Using Machine Weight Never raise the front or rear of the machine to use the machine’s weight to excavate. Operating while using the machine’s weight may damage the machine. 0002870 Fig. 4-39 Do Not Operate a Cylinder to the...

  • Page 116: Avoid Dozer Blade Impact

    Machine Operation SY50U Excavator OMM Avoid Dozer Blade Impact Do not strike rocks or other hard objects with the dozer blade. This can shorten the service life of the dozer blade or the hydraulic cylinder. 0002874 Fig. 4-41 Avoid Shifting Travel Directions Suddenly •...

  • Page 117: Travel

    SY50U Excavator OMM Machine Operation TRAVEL General Travel Instructions WARNING! • Check the surroundings and sound the horn before moving the machine. • Personnel are not allowed to approach the machine without operator approval. • If the travel motors are in the front of the machine, the travel control pedals will operate in reverse.

  • Page 118: Traveling At High Speed

    Machine Operation SY50U Excavator OMM • Do not drive or swing the machine on broken stones, rugged surfaces, steel bars, or scrap iron. This could cause personal injury or track damage. • Do not perform operations where the rubber tracks may skid.

  • Page 119: Operating In Water

    SY50U Excavator OMM Machine Operation Operating in Water NOTICE! • Operate the machine slowly when traveling through water. Check the depth of the water with the bucket. • Do not operate the machine in a marine environment. Salt in seawater can damage the track cores.

  • Page 120: Traveling On An Incline

    Machine Operation SY50U Excavator OMM Traveling on an Incline Precautions When Traveling on an Incline WARNING! • Operating the machine on an incline may cause the machine to become unstable. • Use caution when operating the machine on inclines, and use a lower engine speed.
  • Page 121 SY50U Excavator OMM Machine Operation • Avoid crossing inclines as much as possible. Slipping or rolling over may occur. • Do not swing (1) the upper structure on a slope. The machine may tip over. If such an operation is necessary, swing the upper structure and the boom with great care.

  • Page 122: Engine Stalls On An Incline

    Machine Operation SY50U Excavator OMM NOTE: The tracks may slip when the machine is traveling uphill. Use the arm to help the machine travel uphill as necessary. • To maintain machine balance on an incline, extend the boom and arm uphill and keep them 8 in.–12 in.

  • Page 123: Operation On Soft Ground

    SY50U Excavator OMM Machine Operation Operation on Soft Ground NOTICE! • Rugged terrain could cause damage to track components. • Wide tracks are intended for operation on soft surfaces. • Inspect the tracks on a regular basis. Choose the proper track when operating the machine on soft ground. Soft ground may cave in and cause the machine to roll over.

  • Page 124: Two Tracks Stuck

    Machine Operation SY50U Excavator OMM 1. Position the boom and arm at an angle (1) between 90° and 110°. 2. Pivot the upper structure to position the boom over the track that is stuck. 3. Curl the bucket so the back of the bucket touches the ground.

  • Page 125: Towing The Machine

    SY50U Excavator OMM Machine Operation Towing the Machine WARNING! • Make sure the wire ropes used for towing the machine are strong enough. • Never use a broken chain, worn wire rope, or a bent tow hook to tow the machine.

  • Page 126: Recommended Operations

    Machine Operation SY50U Excavator OMM RECOMMENDED OPERATIONS WARNING! • Contact the site supervisor before any digging to make sure that all underground hazards have been located. • To avoid injury, never allow any personnel within the work zone of the machine.

  • Page 127: Boom Swing Feature

    SY50U Excavator OMM Machine Operation Boom Swing Feature The boom swing feature allows this excavator to perform trench work close to a wall. 0002917‘ Fig. 4-59 Vehicle Loading To increase efficiency, load the dump truck from behind instead of from the side.

  • Page 128: Operating Precautions

    Machine Operation SY50U Excavator OMM OPERATING PRECAUTIONS WARNING! • Always wear appropriate personal protective equipment (PPE) clothing during operation. • Clear all personnel and obstacles around the machine and the work area. Inspect the machine surroundings during operation. Be careful not to allow the upper structure to hit any objects when operating Fig.

  • Page 129: Park The Machine

    SY50U Excavator OMM Machine Operation PARK THE MACHINE 1. Move the machine to a solid, level surface. 2. Lower the bucket and dozer blade to the ground. 3. Move the throttle control dial to the MIN (low idle) position. Run the engine at idle for 5 minutes to cool it.

  • Page 130: Cold Weather Operation

    Machine Operation SY50U Excavator OMM COLD WEATHER OPERATION Operation in Cold Weather When operating the machine in low temperatures, the engine may be difficult to start, the fuel lines may freeze, and oil may become more viscous (thicker). Select fuels and lubricants according to the air temperature.

  • Page 131: Machine Storage In Cold Weather

    After Cold Season • Replace the fuel and engine oil with fuel and oil of the specified viscosity. See “SANY-Approved Lubricants” on page 5-6. • If permanent ethylene glycol engine coolant was not used, drain and flush the cooling system completely and add new ethylene glycol engine coolant to the engine cooling system.

  • Page 132: Long-Term Storage

    Machine Operation SY50U Excavator OMM Long-Term Storage Before Long-Term Storage NOTICE! Extend the bucket and arm and lower the boom to help prevent the cylinder rods from rusting. Perform the following procedures before storing the machine: 1. Clean and wash all components and park the machine indoors.

  • Page 133: Air Conditioner Storage

    Removing from Storage NOTICE! If the machine was not operated monthly, contact a SANY dealer before using the machine. Follow the procedures below before using a machine that has been stored for a prolonged period of time: •...

  • Page 134: Transportation Information

    Machine Operation SY50U Excavator OMM TRANSPORTATION INFORMATION Transportation Method Applicable laws and regulations must be observed when transporting the machine. • When transporting the machine with a trailer, confirm the length, width, height, and weight capacity of the trailer before loading.

  • Page 135: Loading The Machine

    SY50U Excavator OMM Machine Operation Use level, solid ground and keep the machine a safe distance away from roads during loading and unloading operations. • Make sure the loading ramps have adequate width, length, thickness, and strength. The maximum angle of the ramps is 15°...
  • Page 136 Machine Operation SY50U Excavator OMM • When loading the excavator with work equipment installed, place the work equipment in the front and travel forward. 0002937 Fig. 4-70 • When loading the excavator without equipment installed, travel in reverse up the ramps. Maintain the ramps to no more of an angle than 15°...
  • Page 137 SY50U Excavator OMM Machine Operation NOTE: To prevent damage to the bucket cylinder, place a wood block (1) between the bucket cylinder and the trailer floor. Slowly lower the bucket cylinder onto the wood block. 6. Stop the engine and turn the key to the ON position.

  • Page 138: Securing The Machine

    Machine Operation SY50U Excavator OMM Securing the Machine NOTICE! To prevent damage to the machine during transportation: • Lower the radio antenna and position the rearview mirror inward towards the cab. • Secure any removed parts to the trailer. • Put a wood block between the bucket cylinder and the trailer floor to help prevent damage to the bucket cylinder.

  • Page 139: Unloading The Machine

    SY50U Excavator OMM Machine Operation Unloading the Machine NOTICE! To prevent damage to the machine during transportation: • Use extreme care when the machine drives over the joint area between the trailer and the ramps. • Avoid damage caused by unexpected movement of the work equipment.
  • Page 140 Machine Operation SY50U Excavator OMM 8. Adjust the boom-arm to an angle of 90° and 110° (3) and lower the bucket so that the flat surface is in contact with the ground. Drive the machine slowly onto the ramps. 0002950 Fig.

  • Page 141: Lifting The Machine

    SY50U Excavator OMM Machine Operation Lifting the Machine WARNING! • Make sure all lifting devices are in safe operating condition and with sufficient capacity rating to safely support the intended load. • Never lift the machine with a person inside the cab.
  • Page 142 Machine Operation SY50U Excavator OMM 9. Use wire ropes and a container spreader bar that have adequate length to keep the machine free from damage. 10. Lift the machine 10 in.–12 in. (25 cm–30 cm) and check its balance. If it is not balanced, lower the machine to the ground and adjust the boom or dozer blade positions.

  • Page 143: Maintenance

    SANY-Approved Lubricants ........
  • Page 144 Maintenance SY50U Excavator OMM Collect Oil Samples ............5-13 Maintenance Schedule .
  • Page 145 SY50U Excavator OMM Maintenance Cooling System ............. 5-32 Check the Engine Coolant Level .
  • Page 146 Maintenance SY50U Excavator OMM Boom Cylinder Rod End Pin ..........5-63 Bucket Linkage Pins .

  • Page 147: Maintenance Information

    • Contact a SANY dealer if you are unable to perform the procedures listed in this manual or if additional procedures are required. •...

  • Page 148: Sany-Approved Lubricants

    Before changing the engine or hydraulic oil or filters, inspect them for contamination. If contamination is found, send a sample of the oil for testing to help determine the cause. Consult with a SANY dealer before operating the machine.

  • Page 149: Cleaning The Machine

    Weld, Drill, Cut, or Grind on the Machine NOTICE! Contact a SANY dealer before beginning any welding repairs. Any welding repairs on the machine must be performed by personnel who are qualified and certified to perform repairs that require welding. Owners are responsible for the structural integrity of any completed repair.

  • Page 150: Near Ocean (Salt Air) Environments

    In cold environments (32°F [0°C] or below), lubricate only with the oils shown in “Engine Oil Viscosity/ Temperature Data” on page 5-12. SANY recommends fuels identified in “Fuel” on page 5-11for extremely cold environments. Prior to starting the engine, make sure the battery is fully charged and the battery case and the cables have not cracked.

  • Page 151: Daily Inspection And Maintenance

    SY50U Excavator OMM Maintenance Daily Inspection and Maintenance Do the following before operation with the engine off: • Perform daily service as necessary. • Inspect the machine for loose or missing components. • Clean the cab. • Check all controls for smooth operation and make sure they return to the neutral position.

  • Page 152: Recommended Lubricants, Fuels, And Coolant

    Failure to follow these standards can cause damage to the machine, or may cause improper machine operation. Always use SANY-approved lubricants, engine coolants, and filters. SANY is not responsible for damage caused by using unauthorized lubricants and engine coolants. Contact a SANY dealer for additional information.

  • Page 153: Fuel

    Do not use gasoline, kerosene, or any unapproved fuels in the fuel system. • If fuel waxing or bacterial growth occurs in the fuel system, contact a SANY dealer. • Make sure that there is no water or foreign material in the fuel. Take appropriate precautions to prevent fuel contamination during refueling.

  • Page 154: Engine Oil Viscosity/Temperature Data

    Diesel fuel GB252 Super-20 diesel fuel GB252 Super -35 diesel fuel Grease fitting Grease NLGI No.2 Engine See the engine manual or contact a SANY dealer for the Cooling system coolant recommended engine coolant. Fluid Capacities Capacities Model Final Drive...

  • Page 155: Additional Approved Service Products

    Mineral spirits, Type 1 or 2, high flash point. Collect Oil Samples 1. Obtain an Oil Analysis Sample Kit from a SANY dealer. 2. Operate the machine until the lubricant is at normal operating temperature. 3. Prepare the machine for checks and inspections. See “Maintenance Safety” on page 2-8.

  • Page 156: Maintenance Schedule

    Maintenance SY50U Excavator OMM MAINTENANCE SCHEDULE • Failure to perform the following procedures when and as directed can cause damage to the machine and cause the machine to operate improperly. • The lubricating intervals listed in the following tables apply only to normal operating conditions. In harsh environments, including those with dusty or corrosive air, extreme temperatures, heavy loads, frequent operating times, and long duty cycles, lubricating intervals should be shortened.

  • Page 157: After The First 50 Hours

    SY50U Excavator OMM Maintenance • Replace the bucket. (See page 5-69.) • Check the windshield washer fluid. (See page 4-12.) After the First 50 Hours • Change the engine oil and filter. (See page 5-29.) Weekly or Every 50 Hours •...

  • Page 158: Every 6 Months Or 1000 Hours

    Maintenance SY50U Excavator OMM • Replace the air filters. (See page 5-31.) • Clean or replace the ventilation filter screen. (See page 36.) • Check the final drive oil level. (See page 5-57.) • Collect engine oil sample. (See page 5-28.) •...

  • Page 159: Annually Or Every 4000 Hours

    SY50U Excavator OMM Maintenance • Check the starter. (See page 5-32.) • Check the engine valve clearance. (Contact a SANY dealer for more information.) • Change the hydraulic oil. (See page 5-53.) • Replace the hydraulic oil pilot filter. (See page 5-49.) •...

  • Page 160: Lubrication And Maintenance Charts

    Maintenance SY50U Excavator OMM Lubrication and Maintenance Charts Lubricants are used to minimize wear between moving parts. Insufficient lubrication will lead to excessive wear and damage to components. Engine oil is critical for engine operation. Never use lubricants that are not SANY-approved.
  • Page 161 SY50U Excavator OMM Maintenance Lubrication Chart Lubrication Interval Item Maintenance Items Qty. Lubricant 50 hr. 100 hr. 250 hr. 500 hr. Arm cylinder pins Boom-arm connecting pin Boom pin Swing bearing Dozer blade linkage pins Dozer blade cylinder pins Grease...

  • Page 162: Accessory Light Outlet

    Maintenance SY50U Excavator OMM Accessory Light Outlet An accessory light (12V) outlet (1), located in the engine compartment for powering an accessory light. Fig. 5-3 0003204 DOORS AND HOOD NOTE: The following can be locked using the machine key to prevent unauthorized access: •...

  • Page 163: Cab Door

    SY50U Excavator OMM Maintenance Cab Door The cab door can be locked (1) when closed. Secure the cab door after opening it using the cab door latch. 1. Pull the door handle (2) and push the cab door open until the catch (3) engages the latch (4).

  • Page 164: Closing The Engine Hood

    Maintenance SY50U Excavator OMM Closing the Engine Hood 1. Close the right rear access door (2) before closing the engine hood (1). 2. Close the engine hood. Make sure it is firmly seated in the latch (3). 3. Insert the key into the lock and turn it counterclockwise to lock the latch.

  • Page 165: Closing/Locking The Right Front Access Door

    SY50U Excavator OMM Maintenance Closing/Locking the Right Front Access Door 1. Lift the access door support arm (1) up slightly from the support position, close the access door, and insert the key. 2. Turn the key counterclockwise to lock the door.

  • Page 166: Windshield

    Maintenance SY50U Excavator OMM Windshield Inspect the Windshield Mechanism Check the windshield latches (4), linkages (5), and gas struts (6) inside the cab (one mechanism on each side). 0003194 Fig. 5-13 5-24 SANY Operation and Maintenance Manual — 0120...

  • Page 167: Inspect And Tighten The Windshield Wiper Arm Nut

    SY50U Excavator OMM Maintenance Inspect and Tighten the Windshield Wiper Arm Nut Raise the nut cap (7) at the end of the wiper arm, and check the nut (8). If the nut is loose, tighten it to 26–33 lb-ft. (33–...

  • Page 168: Fuses

    Maintenance SY50U Excavator OMM FUSES NOTICE! • A fuse should be replaced if it is blown, corroded, or becomes loose in the fuse block. • Before replacing a fuse, make sure the key switch is in the OFF position and the batteries are disconnected.

  • Page 169: Maintenance Procedures

    SY50U Excavator OMM Maintenance MAINTENANCE PROCEDURES Engine WARNING! Maintenance and service must be performed with the engine off unless otherwise indicated: • Shut off the engine before opening or removing the engine cover. • Remove the key and turn the battery disconnect switch to OFF.

  • Page 170: Prestart Inspection

    “Horn Function Check” on page 4-13 Collect Engine Oil Sample 1. Obtain an Oil Analysis Sample Kit from a SANY dealer. 2. Operate the machine until the engine oil is up to normal operating temperature. 3. Prepare the machine for service. See “Maintenance Safety” on page 2-8.

  • Page 171: Change The Engine Oil And Filter

    SY50U Excavator OMM Maintenance Change the Engine Oil and Filter 1. Prepare the machine for service. See “Maintenance Safety” on page 2-8. NOTICE! Dispose of used oil and filter in accordance with all applicable environmental regulations. Failure to do so could result in damage to the environment.

  • Page 172: Check And Adjust The Fan Belt Tension

    Visually inspect the condition of the belt. Fan belts that have been exposed to oil or engine coolant, or show signs of damage or wear, must be replaced. Replacing the fan belt requires special tools. Contact a SANY dealer for additional information. 5-30 SANY Operation and Maintenance Manual —...

  • Page 173: Check And Replace The Air Filters

    Check the alternator for abnormal noise and operation. If the alternator is malfunctioning, the brushes or bearings may have reached the end of their service life and may need to be replaced. Contact a SANY dealer for additional information. 5-31 SANY Operation and Maintenance Manual —...

  • Page 174: Check The Starter

    Check the Starter Prepare the machine for service. See “Maintenance Safety” on page 2-8. Check the starter motor for abnormal noise and operation. If the starter is malfunctioning, contact a SANY dealer for additional information. Inspect Engine Crankcase Breather System The crankcase breather system is required to be inspected every 1500 hours to maintain the emission requirements of the engine.

  • Page 175: Change The Engine Coolant

    SY50U Excavator OMM Maintenance Change the Engine Coolant WARNING! • Engine coolant is toxic. Avoid inhaling or ingesting engine coolant. If eyes or skin are contaminated by coolant, wash the affected area with plenty of water and seek medical treatment immediately.

  • Page 176: Inspect The Engine Water Pump

    Prepare the machine for service. See “Maintenance Safety” on page 2-8. If the fan pulley has play, the bearings inside the engine water pump are worn and it must be replaced. Contact a SANY dealer for additional information. 5-34 SANY...

  • Page 177: Inspect And Clean The Cooling Package

    SY50U Excavator OMM Maintenance Inspect and Clean the Cooling Package WARNING! • Do not allow compressed air, pressurized water, or steam to come into contact with skin. • Always wear goggles, gloves, and other personal protective equipment (PPE). Failure to follow these warnings could result in death or serious injury.

  • Page 178: Heating And Air Conditioning System

    Maintenance SY50U Excavator OMM Heating and Air Conditioning System Check Heating and Air Conditioning System Operation See “Heating and Air Conditioning System” on page 3-38. 1. With the engine running, adjust the blower speed adjustment dial to check fan speed control and airflow.

  • Page 179: Check And Adjust The Air Conditioning Compressor Belt Tension

    SY50U Excavator OMM Maintenance 4. Remove the four fasteners (4) and the ventilation filter screen (5). 5. Clean and inspect the ventilation filter screen. Replace the ventilation filter screen if it is damaged or worn. 6. Installation is in the reverse order of removal.

  • Page 180: Air Conditioning Storage

    Maintenance SY50U Excavator OMM Air Conditioning Storage When the air conditioning will not be used for an extended period of time, it should be operated for 3 to 5 minutes each month in order to lubricate the compressor components and air conditioning system seals.

  • Page 181: Fuel System

    SY50U Excavator OMM Maintenance Fuel System Bleed the Fuel System NOTE: Air trapped in the fuel system may cause engine starting failure or abnormal running. After servicing the fuel system or running out of fuel, the key switch should be turned to ON for 2 to 3 minutes before attempting to start the engine.

  • Page 182: Replace The Fuel Filter

    2. Place a container under the fuel filter (1) to collect spilled fuel. 3. Remove the fuel filter. NOTE: Always use SANY-approved fuel filters. 4. Clean the mounting base of the fuel filter and fill the new fuel filter with clean fuel. Apply a thin film of oil onto the O-ring and install the new fuel filter onto the filter housing.

  • Page 183: Drain And Clean The Fuel/Water Separator

    SY50U Excavator OMM Maintenance Drain and Clean the Fuel/Water Separator WARNING! Components and oil remain hot when the engine is stopped, which may cause severe burns. Wait until components and oil are cool before you proceed. • Never service the fuel system near an open flame or while smoking.
  • Page 184 Maintenance SY50U Excavator OMM 4. Route the drain hose (5) into a suitable container. Open the drain valve (4) and drain the filter housing completely. 5. Close and hand-tighten the drain valve. 6. Remove the filter housing (2) and filter element (3) from the filter housing.

  • Page 185: Battery

    SY50U Excavator OMM Maintenance Battery Check the Battery WARNING! Before proceeding with any battery maintenance procedure, observe the following: • The top of the battery must be kept clean to prevent plugging of the battery vents. Regularly wash the top of the battery to prevent the battery vents from plugging.

  • Page 186: Remove The Battery

    Maintenance SY50U Excavator OMM 6. Check the negative (1) and positive (2) terminals for corrosion or loose connections under the protective covers. Clean the area with a mixture of baking soda and warm water. tighten fasteners as needed. 7. Wipe down the battery and terminals with a clean cloth.
  • Page 187 SY50U Excavator OMM Maintenance 4. Disconnect the negative terminal (1) first, followed by the positive terminal (2). 5. Remove the fasteners (3) securing the battery hold- down. Remove the battery hold-down (4). 6. Check that all cables and parts are out of the way, then lift the battery out of the battery compartment.

  • Page 188: Hydraulic System

    5. Fully cycle each pedal, joystick, and travel control lever two to three times within 15 seconds in order to release any pressure remaining in the hydraulic lines. NOTE: If there is no movement, contact a SANY dealer. Check the Hydraulic Hoses, Lines, and Connectors WARNING! Never use hands to search for hydraulic oil leaks.

  • Page 189: Check Hydraulic Oil Tank Level

    SY50U Excavator OMM Maintenance 6. Move the hydraulic lockout control lever to the locked (closed) position. 7. Open the right front access door. 8. Remove the cap (1) and press the relief valve button (2) to release pressure in the hydraulic tank.

  • Page 190: Replace The Hydraulic Tank Breather Filter Element

    Maintenance SY50U Excavator OMM 4. Clean around the hydraulic tank breather assembly (1). 5. Remove the four fasteners (2) and the hydraulic tank breather assembly. 6. Slowly add hydraulic oil through the breather assembly opening of the hydraulic tank. Monitor the oil level as it is added.

  • Page 191: Replace The Hydraulic Oil Pilot Filter

    SY50U Excavator OMM Maintenance 6. Inspect the filter element (5). Replace the filter element as needed. 7. Install the filter. Tighten the cover and wing nut cover securely. NOTICE! Dispose of the hydraulic oil and filters in accordance with all applicable environmental regulations.

  • Page 192: Replace The Hydraulic Oil Return Filter

    Maintenance SY50U Excavator OMM 7. Install a new filter element, gasket, and O-ring. Install the filter bowl and tighten securely. WARNING! Never use hands to search for hydraulic oil leaks. Use a piece of cardboard or paper. Hydraulic oil leaking under pressure can penetrate the skin. Failure to follow this warning could result in death or serious injury.

  • Page 193: Clean And Replace The Hydraulic Oil Suction Strainer

    SY50U Excavator OMM Maintenance 3. Clean the top of the hydraulic tank and the return filter cover (1). 4. Loosen the four fasteners (2) that secure the return filter cover. Push the cover down against the spring pressure while removing the fasteners. Remove the cover.
  • Page 194 Maintenance SY50U Excavator OMM NOTICE! Dispose of the hydraulic oil and filters in accordance with all applicable environmental regulations. Failure to do so could result in damage to the environment. 1. Prepare the machine for service. See “Maintenance Safety” on page 2-8.

  • Page 195: Change The Hydraulic Oil

    SY50U Excavator OMM Maintenance Change the Hydraulic Oil WARNING! • Allow the hydraulic system to cool before servicing. Hot oil may cause burns or other serious injury. • The hydraulic tank may be under pressure, and hydraulic oil may be present at the breather.

  • Page 196: Collect Hydraulic Oil Sample

    Hydraulic Oil” on page 5-47. Collect Hydraulic Oil Sample 1. Obtain an Oil Analysis Sample Kit from a SANY dealer. 2. Operate the machine until the hydraulic oil is up to normal operating temperature. 3. Prepare the machine for service. See “Maintenance Safety” on page 2-8.

  • Page 197: Track Assembly

    SY50U Excavator OMM Maintenance Track Assembly Check the Track Tension NOTICE! Remove gravel or mud buildup between the sprocket and the track before checking track tension. 1. Use the bucket to lift the track on one side. Place an appropriate supporting device under the frame.

  • Page 198: Decrease The Track Tension

    Maintenance SY50U Excavator OMM 1. Use the bucket to lift the track on one side. Place an appropriate supporting device under the frame. 2. Prepare the machine for service. See “Maintenance Safety” on page 2-8. 3. Make sure that the grease valve (1) is closed tightly.

  • Page 199: Check And Add Final Drive Oil

    SY50U Excavator OMM Maintenance Check and Add Final Drive Oil CAUTION! • Allow the final drive to cool before servicing. Hot oil may cause burns or other serious injury. • The final drive gear case may be under pressure. Remove the plugs slowly to prevent injury.

  • Page 200: Change The Final Drive Oil

    Maintenance SY50U Excavator OMM Change the Final Drive Oil CAUTION! • Allow the final drive to cool before servicing. Hot oil may cause burns or other serious injuries. • The final drive gear case may be under pressure. Remove the plugs slowly to prevent injury.

  • Page 201: Collect Final Drive Oil Sample

    SY50U Excavator OMM Maintenance Collect Final Drive Oil Sample 1. Obtain an Oil Analysis Sample Kit from a SANY dealer. 2. Operate the machine to normal operating temperature. 3. Prepare the machine for service. See “Maintenance Safety” on page 2-8.

  • Page 202: Lubrication

    Maintenance SY50U Excavator OMM Lubrication Lubrication Points Fig. 5-53 0001635 1) Arm cylinder rod end pin (page 5-61) 9) Boom cylinder rod end pin (page 5-63) 2) Boom-arm connecting pin (page 5-61) 10) Bucket linkage pins (page 5-64) 3) Arm cylinder base end pin (page 5-62)

  • Page 203: Arm Cylinder Rod End Pin

    SY50U Excavator OMM Maintenance See “Lubrication and Maintenance Charts” on page 5-18. A new machine must be greased every 8 hours for the first 50 service hours. If abnormal noise exists, additional lubrication is required. More frequent lubrication is required when the machine is operated with heavy optional equipment (e.g., a hydraulic breaker).

  • Page 204: Arm Cylinder Base End Pin

    Maintenance SY50U Excavator OMM Arm Cylinder Base End Pin 1. Remove the grease fitting cap (1) from the arm cylin- der base end pin grease fitting (2). 2. Grease the arm cylinder base end pin grease fitting. NOTE: Wipe excess grease from around the grease fitting.

  • Page 205: Dozer Blade Linkage Pins And Dozer Blade Cylinder End Pins

    SY50U Excavator OMM Maintenance Dozer Blade Linkage Pins and Dozer Blade Cylinder End Pins NOTE: Only one dozer blade linkage pin grease fitting cap is shown. 1. Remove the grease fitting caps (1) from the dozer blade cylinder end pins (2) and the dozer blade linkage pins (3).

  • Page 206: Bucket Linkage Pins

    Maintenance SY50U Excavator OMM Bucket Linkage Pins 1. Remove the grease fitting caps (2) from the bucket linkage pin grease fittings (1). 2. Grease the bucket linkage pin grease fittings. NOTE: Wipe excess grease from around the grease fittings. 3. Install the grease fitting caps.

  • Page 207: Boom Swing Cylinder Rod End Pin

    SY50U Excavator OMM Maintenance Boom Swing Cylinder Rod End Pin 1. Remove the grease fitting cap (1) from the boom swing cylinder rod end pin grease fitting (2). 2. Grease the boom swing cylinder rod end pin grease fitting. NOTE: Wipe excess grease from around the grease fitting.

  • Page 208: Boom Swing Pin

    Maintenance SY50U Excavator OMM Boom Swing Pin NOTE: Only one boom swing pin grease fitting cap is shown. 1. Remove the grease fitting caps (1) from the boom swing pin grease fittings (2). 2. Grease the boom swing pin grease fittings.
  • Page 209 SY50U Excavator OMM Maintenance 3. Grease the two cab door hinges (3) until grease comes out of the hinges. Wipe off excess grease. 0003195 Fig. 5-71 5-67 SANY Operation and Maintenance Manual — 0120...

  • Page 210: Bucket

    Maintenance SY50U Excavator OMM Bucket Replace the Bucket Teeth WARNING! • Unexpected machine movement can be dangerous when replacing the bucket teeth. Place the bucket on a stable work surface. Shut down the engine and lock out the control levers.

  • Page 211: Remove And Install The Bucket

    SY50U Excavator OMM Maintenance Remove and Install the Bucket CAUTION! • Keep fingers and other body parts away from pinch points to prevent crushing injuries while removing or installing the bucket. Never put your finger into the pin bore during alignment.
  • Page 212 Maintenance SY50U Excavator OMM This Page Intentionally Left Blank 5-70 SANY Operation and Maintenance Manual — 0120...

  • Page 213: Specifications

    SY50U Excavator OMM Specifications Specifications Machine Dimensions ............. 6-2 Working Ranges .

  • Page 214: Machine Dimensions

    Specifications SY50U Excavator OMM MACHINE DIMENSIONS Fig. 6-1 0003198 Item Description Dimensions Tail swing radius 3 ft. 3 in. (980 mm) Transport height 8 ft. 8 in. (2630 mm) Minimum ground clearance 1 ft. 1 in. (325 mm) Upper structure width 5 ft.

  • Page 215: Working Ranges

    SY50U Excavator OMM Specifications WORKING RANGES 0003762 Fig. 6-1 SANY Operation and Maintenance Manual — 0120...
  • Page 216 Specifications SY50U Excavator OMM Item Description Dimensions Minimum swing radius 8 ft. 3 in. (2520 mm) Maximum digging height 17 ft. 11 in. (5450 mm) Maximum dumping height 12 ft. 6 in. (3805 mm) Maximum digging depth 11 ft. 3 in. (3420 mm) Maximum vertical wall digging depth 8 ft.

  • Page 217: Technical Specifications

    SY50U Excavator OMM Specifications TECHNICAL SPECIFICATIONS Description Specifications Operating weight 11,684 lbs. (5300 kg) Engine type Yanmar 4TNV88C Maximum engine power (gross) 39 hp/29.1 kW @ 2400 rpm Maximum engine torque 133.3 lb-ft/144.9 N•m @ 1500 rpm Engine displacement 133.8 cu in (2.191 L) Main pump flow 29.1 gal.

  • Page 218: Lift Chart: Blade Down

    Lift capacities shown are without power boost feature and do not exceed 75% of minimum tipping loads or 87% of hydraulic capacities. These capacities only apply to the machine as originally manufactured and normally equipped by SANY. Lift capacities do not include a bucket and are in compliance with ISO 10567:2007 •...

  • Page 219: Lift Chart: Blade Up

    Lift capacities shown are without power boost feature and do not exceed 75% of minimum tipping loads or 87% of hydraulic capacities. These capacities only apply to the machine as originally manufactured and normally equipped by SANY. Lift capacities do not include a bucket and are in compliance with ISO 10567:2007 •...
  • Page 220 Specifications SY50U Excavator OMM This Page Intentionally Left Blank SANY Operation and Maintenance Manual — 0120...

  • Page 221: Optional Equipment

    SY50U Excavator OMM Optional Equipment Optional Equipment Optional Equipment Selection ............7-2 Read Equipment Instructions.

  • Page 222: Optional Equipment Selection

    SY50U Excavator OMM OPTIONAL EQUIPMENT SELECTION Consult a SANY dealer before installing any optional equipment to the machine. Depending on the type of optional equipment selected, protective structures (such as front guards or top guards) may need to be installed on the machine.

  • Page 223: Equipment Operation Precautions

    SY50U Excavator OMM Optional Equipment Equipment Operation Precautions NOTICE! The following precautions must be strictly observed when selecting, installing, and operating optional equipment. Failure to follow this notice can damage the machine or cause it to operate improperly. • Prior to the operation, move the machine to a safe area and test its operation.

  • Page 224: Install Optional Equipment

    Optional Equipment SY50U Excavator OMM INSTALL OPTIONAL EQUIPMENT WARNING! • Do not release the optional equipment unless it is on the ground or on a solid, supportive surface. Block or support the equipment to prevent rolling or tipping. • Hydraulic systems operate under high pressure. Hydraulic oil escaping under pressure is dangerous.
  • Page 225 SY50U Excavator OMM Optional Equipment 7. Adjust the return flow selector valve (3) according to the optional equipment being installed. The return flow selector valve is located behind the right rear access door. It regulates the direction of hydraulic oil flow.

  • Page 226: Remove Optional Equipment

    Optional Equipment SY50U Excavator OMM REMOVE OPTIONAL EQUIPMENT WARNING! • Do not release the optional equipment unless it is on the ground or on a solid, supportive surface. Block or support the equipment to prevent rolling or tipping. • Hydraulic systems operate under high pressure. Hydraulic oil escaping under pressure is dangerous.
  • Page 227 This Page Intentionally Left Blank...
  • Page 228 318 Cooper Circle Peachtree City, Georgia 30269 Find a Dealer: sanyamerica.com/find-a-dealer Sales E-mail: sales@sanyamerica.com Service E-mail: service@sanyamerica.com Service Hotline: 470 552 SANY (7269) s anyameri ca. co m service@sanyamerica.com SANY Part Number SSY005082347...

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