Terex PT-50 Service Manual
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Terex PT-50 Service Manual

Rubber track loader
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Service Manual
Rubber Track Loader
PT-50/60
Part Number: 2030-634
Printed (4-10)

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  • Page 1 Service Manual Rubber Track Loader PT-50/60 Part Number: 2030-634 Printed (4-10)

  • Page 3: Table Of Contents

    Safety Label Examples ........1-4 Chapter Overview ........... 7-1 Personal Safety ............7-1 2. Technical Specifications Machine Preparation ..........7-1 PT-50 Specifications ..........2-1 Radiator/Oil Cooler Disassembly and Assembly PT-60 Specifications ..........2-2 Procedures .............. 7-1 Fan Guard Removal and Installation ....... 7-1 3.
  • Page 4 Rubber Track Loader Table of Contents 9. Loader/Transmission Controls Disassembly 12. Loader Disassembly and Assembly and Assembly Chapter Overview ..........12-1 Personal Safety ............. 12-1 Chapter Overview ........... 9-1 Machine Preparation ..........12-1 Personal Safety ............9-1 Loader Disassembly and Assembly Procedures .. 12-1 Machine Preparation ..........

  • Page 5: Product Safety

    This chapter contains product safety information for the Loader may be unfamiliar with many of the systems on Terex PT-50/60 Rubber Track Loaders. Read and the machine. This makes it especially important to use understand all product safety information before caution when performing service tasks.

  • Page 6: Entering And Exiting

    Rubber Track Loader 1. Product Safety Entering and Exiting Pressurized Items Always use steps and handholds when entering or 1. Do not use hands or any other body part to check exiting a Rubber Track Loader. Clean any mud or for fluid leaks in the hydraulic system.

  • Page 7: Repair

    Terex jack stands objects or hot surfaces during operation. work well to support the machine while performing maintenance or repair work.

  • Page 8: Attachments

    1. Product Safety Attachments Safety Label Examples Examples of the labels and decals displayed on the Only use attachments that are recommended by Terex. machine are shown on this page. Make sure that all necessary guards and protective WARNING equipment are in place and functioning prior to operat- ing any attachment.
  • Page 9 Rubber Track Loader 1. Product Safety WARNING WARNING WARNING DANGER Explosion/Burn Hazard Will cause death, burns or Fall Hazard Burn Hazard blindness due to ignition of Crush Hazard ot surfaces can Falling can result in serious injury or death Contact with h Rollover can crush and result in serious injury or death.

  • Page 11: Technical Specifications

    2. Technical Specifications PT-50 Specifications Engine Loader Valve − Model: Perkins 404D-22 − Model: Husko − Displacement: 2.2 liter − Relief pressure: 3000 psi (20,684 kPa) − Gross horsepower: 50 hp, 37.3 kW − Pilot pressure required to move spools: 180- −...

  • Page 12: Pt-60 Specifications

    Rubber Track Loader 2. Technical Specifications PT-60 Specifications Engine Loader Valve − Model: Perkins 404D-22 T − Model: Husco − Displacement: 2.2 liter − Relief pressure: 3000 psi (20,684 kPa) − Gross horsepower: 60 hp, 44.7 kW − Pilot pressure required to move spools: 40- −...

  • Page 13: System Diagrams

    The filtering and cooling system (Figure 3-1) contains PT-50/60 systems. the following major components. • Filtering and cooling system • Hydraulic reservoir • Auxiliary circuit system • Radiator/oil cooler • Drive loop system • Loader valve Figure 3-1 PT-50/60 Filtering and Cooling System 3-001...

  • Page 14: Auxiliary Circuit System

    3. System Diagrams Auxiliary Circuit System The auxiliary circuit system (fig. 3-2) contains the following major components. • Loader valve • Pilot control manifold • Auxiliary gear pump • Loader control joystick Figure 3-2 PT-50/60 Auxiliary Circuit System 3-002 Self leveling (optional)

  • Page 15: Drive Loop System

    • Drive motors • Pilot control manifold • Drive control joystick • Tandem pump Figure 3-3 PT-50/60 Drive Loop System 3-003 Input Portion (joystick) tank Output Portion (drive motors) drive motor tandem pump (PT-60 2-spd) tank case drain...

  • Page 16: Electrical Attachment Outlet

    Rubber Track Loader 3. System Diagrams Electrical Attachment Outlet Figure 3-4 PT-50/60 Electrical Attachment Outlet...

  • Page 17: Machine Controls And Instrumentation

    4. Machine Controls and Instrumentation Chapter Overview Instrumentation This chapter contains an overview of the machine con- The Instruments (Figure 4-2) are positioned in the trols and instrumentation. For further information overhead dash panel for ease of access and visibility regarding machine controls, instrumentation or opera- when seated inside the operator enclosure.

  • Page 18: Switches

    Rubber Track Loader 4. Machine Controls and Instrumentation PT-50/60 Switches The various switches (Figure 4-3) are positioned to provide good access and visibility. The standard and optional switches are listed below. (1) Work lights (2) Heater fan (optional) (3) Front wiper (optional)

  • Page 19: Operator Enclosure Disassembly And Assembly

    5. Operator Enclosure Disassembly and Assembly Chapter Overview Operator Enclosure Disassembly and Assembly This chapter provides disassembly and assembly procedures for the operator enclosure assembly. Procedures Disassembly and assembly procedures are provided Personal Safety for the following operator enclosure components. Improper or incomplete maintenance/repair of a Rubber •...

  • Page 20: Light Bar Installation

    Rubber Track Loader 5. Operator Enclosure Disassembly and Assembly Light Bar Installation Figure 5-2 2. Carefully lower the light bar with the wire har- Figure 5-5 ness attached. 1. Carefully position the light bar, without pinching the wiring harness against the cab roof. Figure 5-3 3.

  • Page 21: Ignition Switch Installation

    Rubber Track Loader 5. Operator Enclosure Disassembly and Assembly Ignition Switch Installation Remove Nut Figure 5-7 Figure 5-10 2. Remove the nut that secures the ignition switch 1. Insert the ignition switch from the rear of the to the dash panel. dash panel.

  • Page 22: Gauge Removal And Installation

    Rubber Track Loader 5. Operator Enclosure Disassembly and Assembly 4. Install the light bar. Refer to Chapter 5. Light Bar Installation procedure. Gauge Removal and Installa- tion The tools required for gauge removal and installation are listed in Table 5-3. Use manufacturer- recommended tools whenever possible.

  • Page 23: Lap Bar Gas Assist Spring Removal And Installation

    Rubber Track Loader 5. Operator Enclosure Disassembly and Assembly Remove Retaining Clip Figure 5-18 Figure 5-20 3. Reconnect the gauge connector. 2. Using a small screwdriver, remove the retaining clip from each end of the gas assist spring. 4. Install the light bar. Refer to Chapter 5. Light Bar Installation procedure.
  • Page 24 Rubber Track Loader 5. Operator Enclosure Disassembly and Assembly Install Ends on Ball Joints Figure 5-23 2. Install the ends of the lap bar gas assist spring onto the ball joints. Insert Retaining Clip Figure 5-24 3. Slide the retaining clip on to each end of the gas assist spring.

  • Page 25: Chassis Disassembly And Assembly Procedures

    6. Seat & Fuel Sender Disas- sembly and Assembly Chapter Overview Chassis Disassembly and Assembly Procedures This chapter provides disassembly and assembly procedures for the chassis assembly. Disassembly and assembly procedures are provided for the following chassis components. Personal Safety •...

  • Page 26: Seat Installation

    Rubber Track Loader 6. Chassis Disassembly and Assembly Unplug Connector Plug in the Connector Figure 6-2 Figure 6-5 2. Tilt the seat forward and reach behind the seat to unplug the seat switch wiring harness. 2. Tilt the seat forward and reach behind the seat to plug in the seat switch connector Note: The machine will not operate unless the seat switch connector is plugged in.

  • Page 27: Fuel Sending Unit Installation

    Rubber Track Loader 6. Chassis Disassembly and Assembly Fuel Sending Unit Removal 4. Remove the fuel-sending unit. Be careful not to damage the float mechanism when pulling it 1. Remove the seat. Refer to Chapter 6. Seat Re- through the opening in the fuel tank. moval procedure.
  • Page 28 Rubber Track Loader 6. Chassis Disassembly and Assembly Note: Make sure that the wire on the sending unit is not bent and the fuel pickup line does not interfere with the movement of the float. 3. Connect the hoses and wires to the fuel-sending unit, and then install the screws that fasten the unit to the tank.

  • Page 29: Radiator/Oil Cooler Disassembly And Assembly

    7. Radiator/Oil Cooler Disassembly and Assembly Chapter Overview Radiator/Oil Cooler Disassembly and Assembly This chapter provides disassembly and assembly procedures for the radiator/oil cooler assembly. Ad- Procedures justment procedures are also included for selected radiator/oil cooler components. Disassembly and assembly procedures are provided for the following radiator/oil cooler components.

  • Page 30: Fan Guard Removal

    Rubber Track Loader 7. Radiator/Oil Cooler Disassembly and Assembly Fan Guard Removal Radiator/Cooler Removal and Installation The tools required for radiator/cooler removal and installations are listed in Table 7-2. Use manufactur- er-recommended tools whenever possible. Table 7-2 Required Tools Combination Wrench Socket Wrench Screwdriver Radiator/Cooler Removal...
  • Page 31 Rubber Track Loader 7. Radiator/Oil Cooler Disassembly and Assembly Figure 7-5 Figure 7-2 5. Remove the upper hose from the radiator sec- tion. Cap the hose and fitting. 2. Drain the coolant using the petcock on the bot- tom of the radiator. Figure 7-6 Figure 7-3 6.

  • Page 32: Radiator/Cooler Installation

    Rubber Track Loader 7. Radiator/Oil Cooler Disassembly and Assembly 7. Remove the three mounting bolts on each side Install Bolts of the radiator/cooler. Figure 7-10 Figure 7-8 2. With the radiator/cooler in position, install the three mounting bolts on each side of the radia- 8.
  • Page 33 Rubber Track Loader 7. Radiator/Oil Cooler Disassembly and Assembly 4. Remove the hose and fitting caps and install the upper hose on the radiator section. Install Hose Figure 7-13 5. Remove the hose and fitting caps and install the upper hose on the oil cooler section. Figure 7-14 6.

  • Page 35: Hydraulic Reservoir Disassembly And Assembly

    8. Hydraulic Reservoir Disassembly and Assembly Chapter Overview Hydraulic Reservoir Disassembly and Assembly This chapter provides disassembly and assembly procedures for the hydraulic reservoir assembly. Procedures Cleaning procedures are also included for the hy- draulic reservoir. Disassembly and assembly procedures are provided for the following hydraulic reservoir components.

  • Page 36: Filter Assembly Removal

    Rubber Track Loader 8. Hydraulic Reservoir Disassembly and Assembly Filter Assembly Removal Hot oil can cause personal injury. Make sure the oil is cool before removing any components or lines. Remove the oil filler cap only when the engine is stopped and the machine has been allowed to cool thoroughly Note: During disassembly, cap all hoses and fittings to...

  • Page 37: Filter Assembly Installation

    Rubber Track Loader 8. Hydraulic Reservoir Disassembly and Assembly Figure 8-6 Figure 8-9 6. Remove the filter head and gasket from the re- 3. Reconnect the hose to the filter head and se- servoir. cure. Filter Assembly Installation Figure 8-10 Figure 8-7 4.

  • Page 38: Access Cover Removal And Installation

    Rubber Track Loader 8. Hydraulic Reservoir Disassembly and Assembly 1. Slightly loosen the access cover bolt to separate the upper cap from the oval-shaped clamping disk on the underside of the assembly. This will allow the assembly to be removed. Do not re- move the bolt entirely or the oval-shaped clamp will fall into the reservoir.

  • Page 39: Reservoir Gauge Removal And Installation

    Rubber Track Loader 8. Hydraulic Reservoir Disassembly and Assembly Figure 8-16 Figure 8-17 2. Tighten the access cover bolt. 3. View of hydraulic reservoir with filter assembly removed. Reservoir Gauge Removal and Installation The tools required for reservoir gauge removal and installation are listed in Table 8-3.

  • Page 40: Reservoir Gauge Installation

    Rubber Track Loader 8. Hydraulic Reservoir Disassembly and Assembly Reservoir Gauge Installation Suction Screen Removal Hot oil can cause personal injury. Make sure the oil is cool before removing any components or lines. Remove the oil filler cap only when the engine is Insert Reser- stopped and the machine has been allowed to cool voir Gauge...

  • Page 41: Suction Screen Installation

    Rubber Track Loader 8. Hydraulic Reservoir Disassembly and Assembly Hydraulic Reservoir Cleaning Procedures Cleaning procedures are provided for the following hydraulic reservoir components. • Hydraulic Reservoir Hydraulic Reservoir Cleaning The tools required for hydraulic reservoir cleaning are listed in Table 8-5. Use manufacturer- recommended tools whenever possible.

  • Page 43: Loader/Transmission Controls Disassembly And Assembly

    9. Loader/Transmission Controls Disassembly and Assembly Chapter Overview Loader/Transmission Controls This chapter provides disassembly and assembly pro- Disassembly and Assembly cedures for the loader and transmission controls. Procedures Disassembly and assembly procedures are provided Personal Safety for the following loader/transmission control compo- Improper or incomplete maintenance/repair of a Rubber nents.

  • Page 44: Joystick Removal

    Rubber Track Loader 9. Loader/Transmission Controls Loader Control Joystick Operation – The right-hand joystick controls the loader arm and the at-tachment tilt cylinder. It allows the operator to raise, lower and pivot the attachment. The joystick operates on hydraulic charge pressure. The loader control also has a float position, which is activated by moving the joystick completely forward until it is held in detent.

  • Page 45: Loader Float Magnet Removal And Installation

    Rubber Track Loader 9. Loader/Transmission Controls Note: If it is neccessary to remove the left joystick on a machine equipped with a heater, you must disconnect the (cool) heater lines at the heater unit in order to remove the side panel. Cap and plug hoses and ports to minimize coolant loss.

  • Page 46: Loader Valve Removal And Installation

    Rubber Track Loader 9. Loader/Transmission Controls Loader Valve Removal and Installation The tools required for loader valve removal and in-stal- lation are listed in Table 9 3. Use manufacturer-recom- mended tools whenever possible. Table 9-3 Required Tools Combination Wrenches Loader Valve Removal Figure 9-9 Hot oil can cause personal injury.
  • Page 47 Rubber Track Loader 9. Loader/Transmission Controls Figure 9-11 Figure 9-14 5. Disconnect the gas springs, then remove the bolts 8. Carefully remove the rear valance from the securing the hood as shown to allow for removal. machine to allow access to the loader valve. Loader Valve Figure 9-12 Figure 9-15...

  • Page 48: Self Level Valve Removal And Installation

    Rubber Track Loader 9. Loader/Transmission Controls Disconnect Figure 9-18 11. Disconnect the hoses from the rear and side of the loader valve. Cap and plug all openings to prevent Figure 9-19 fluid loss. Self Level Valve Removal and Installation The tools required for loader valve removal and instal- lation are listed in Table 9-4.

  • Page 49: Chapter Overview

    10. Hydrostatic and Aux. Pump Disassembly and Assembly Chapter Overview Hydrostatic and Hydraulic Pump Disassembly and As- This chapter provides disassembly and assembly procedures for the hydrostatic and auxiliary pump. sembly Procedures Disassembly and assembly procedures are provided Personal Safety for the following transmission and drive components.
  • Page 50 Rubber Track Loader 10. Transmission and Drive Disassembly and Assembly Collect and contain liquids in a suitable contain- er. Dispose of all liquids according to local regula- tions and mandates. Note: During disassembly, cap all hoses and fittings to prevent fluid loss and contamination of the system fluids. 1.

  • Page 51: Tandem Pump Removal And Installation

    Rubber Track Loader 10. Transmission and Drive Disassembly and Assembly Tandem Pump Removal and Installation Remove Split The tools required for tandem pump removal and Flange installation are listed in Table 10-2. Use manufactur- er-recommended tools whenever possible. Remove Table 10-2 Tube and Fitting Required Tools...

  • Page 52: Tandem Pump Installation

    Rubber Track Loader 10. Transmission and Drive Disassembly and Assembly Pump Drive Coupler Flywheel Gear Pump Remove Mounting Bolt Plate Figure 10-10 Figure 10-7 9. Remove the mounting bolt (with spring lock washer and flat washer) from the right-hand side of the tandem pump.

  • Page 53: Pump Drive Coupler Removal And Installation

    Rubber Track Loader 10. Transmission and Drive Disassembly and Assembly 4. Install the access cover and seat. Refer to 6. Remove the auxiliary gear pump. Refer to Chap- Chapter 6. Seat Installation. ter 10. Auxiliary Gear Pump Removal. 5. Add fuel and manufacturer-approved hydraulic 7.

  • Page 54: Pump Drive Coupler Installation

    Rubber Track Loader 10. Transmission and Drive Disassembly and Assembly Pump Drive Coupler Installation Tandem Pump Drive Shaft Pump Drive Coupler Figure 10-15 1. Slide the pump drive coupler all the way onto the tandem pump drive shaft. Tighten Locking Screw Pump Drive...

  • Page 55: Undercarriage Disassembly And Assembly

    11. Undercarriage Disassembly and Assembly Chapter Overview Preliminary Checkout This chapter provides disassembly and assembly If troubleshooting is required prior to disassembly or procedures for the undercarriage assemblies. assembly, refer to Chapter 15. Troubleshooting. Personal Safety Undercarriage Disassembly and Assembly Procedures Improper or incomplete maintenance/repair of a Rubber Track Loader can be dangerous and may result in Disassembly and assembly procedures are provided...

  • Page 56: Wheel Removal

    Rubber Track Loader 11. Undercarriage Disassembly and Assembly Wheel Removal 1. Locate the wheel cap snap ring. Figure 11-4 Using a socket, remove the nut that fastens the wheel to the shaft. Remove the wheel with the wheel extractor. Figure 11-1 Inside Wheel 2.
  • Page 57 Removal Figure 11-10 Figure 11-7 4. Slide the track outward as you pull on the wheel to 1. Raise and support the machine on Terex jack- remove the wheel. stands in the front and rear as shown. Installation 1. To install the end wheels, reverse the removal pro- cedure.

  • Page 58: Track Removal And Installation

    Table 11-4 Required Tools Required Tools Combination/Socket Wrench Socket/impact wrench Heavy duty hydraulic jack Combination wrench Terex approved jack stands (2) Retaining Ring Bolt Removal 1. Perform the end wheel removal procedure located on page 11-3 of this chapter. Drive...

  • Page 59: Outboard Bearing Removal And Installation

    Rubber Track Loader 11. Undercarriage Disassembly and Assembly Outboard Bearing Removal and Installation The tools required to remove and install the outboard bearing assembly are listed in table 11-5. Use manu- facturer recommended tools whenever possible. Table 11-5 Required Tools Combination/socket wrench Snap ring pliers Puller...

  • Page 60: Drive Sprocket Removal And Installation

    Rubber Track Loader 11. Undercarriage Disassembly and Assembly Drive Sprocket Removal and Drive Motor Removal and Installation Installation The tools required to remove and install the drive The tools required to remove and install the drive sprocket assembly are listed in table 11-6. Use manu- motor are listed in table 11-7.
  • Page 61 11. Undercarriage Disassembly and Assembly Hub Tool Kits 11-23 PT-50/60: 0403-552 Idler Hub Service Procedure PT-50/60 Required Tools Socket Wrench & Sockets (including Allen) Press & Tool Kit (0403-552) Snap Ring Pliers 1. Remove the hub assemblies from the undercar-...
  • Page 62 Rubber Track Loader 11. Undercarriage Disassembly and Assembly Part #: 0403-550 Part #: 0403-546 11-27 11-30 5. Remove the bearing out of the front of the hub as shown as well as the metal face seal half and rub- ber ring from the rear of the hub. (fig. 11-27) Part #: 0403-550 Part #: 0403-548 11-31...
  • Page 63 Rubber Track Loader 11. Undercarriage Disassembly and Assembly 8. Thoroughly clean all parts with parts cleaning solu- tion and gently blow them clean with air if neces- sary, then wipe dry. 9. Disassemble and clean the face seals and their rubber outer seals thoroughly, then wipe them dry to ensure a good seal when assembled.
  • Page 64 19. Install the bearing (cleaned, dried and repacked the bottom with tool #: 0403-551 and set it onto with Terex Multi-Purpose EP Lithium Grease) onto the press for center seal installation. (fig. 11-40) the bearing sleeve as shown. Press into the assembly until seated against the race.
  • Page 65 21. Remove the allen plug in the center portion of the hub. (fig. 11-45) 11-46 22. Add 1 oz. of Terex 10W-30 Heavy Duty Engine Oil to the hub as shown, then reinstall the plug and tighten. (fig. 11-46) 23. The hub assembly is now ready to be reinstalled.

  • Page 67: Assembly Procedure

    12. Loader Disassembly and Assembly Chapter Overview Loader Disassembly and Assembly Procedures This chapter provides disassembly and assembly procedures for the loader assembly. Disassembly and assembly procedures are provided for the following loader components. Personal Safety • Lift Cylinders Improper or incomplete maintenance/repair of a Rubber •...
  • Page 68 Rubber Track Loader 12. Loader Disassembly and Assembly Collect and contain liquids in a suitable container. Dispose of all liquids according to local regulations and mandates. Lift Cylinder Note: During disassembly, cap all hoses and fittings to Remove prevent fluid loss and contamination of the system fluids. Hose 1.

  • Page 69: Lift Cylinder/Tilt Cylinder Installation

    Rubber Track Loader 12. Loader Disassembly and Assembly Quick-Coupler Block / Pressure Release Valve Remove Removal and Installation The tools required for low-flow relief valve removal and installation are listed in Table 12-2. Use manufacturer-recommended tools whenever possible. Table 12-2 Required Tools Combination Wrench Figure 12-6...
  • Page 70 Rubber Track Loader 12. Loader Disassembly and Assembly Quick Coupler Block / Pressure Release Valve Installation Install Bolts Figure 12-8 3. Press the button on top of the valve to release Figure 12-11 hydraulic pressure. 1. Install the four bolts that secure the low-flow relief valve to the loader frame.

  • Page 71: 13. Maintenance

    Terex the proper SCA (Supplemental Cooling Additive) Heavy Duty Diesel Engine Oil – 10W30 is recom- mended. If Terex lubricants are not available, use a Engine Oil substitute meeting the following qualifications: - API CH-4 multi-grade engine oil Regular oil changes are necessary to maintain a strong running engine.

  • Page 72: Hydraulic Fluid And Filter

    Rubber Track Loader 13. Maintenance Hydraulic Fluid and Filter The hydraulic fluid should be changed every 500 service hours, and the hydraulic filter should be changed every 250 hours. Hydrostatic components require extremely clean oil for long service life. Hydraulic Fluid and Filter Change Procedures Hot oil can cause personal injury.

  • Page 73: Fuel/Water Separator

    Rubber Track Loader 13. Maintenance Fuel-Water Separator 2. Remove the bolt on the top of the assembly, then slide the filter and retainer down and off of the assembly. 3. Install the new filter by reversing step 2. 4. Bleed the fuel system according to the proce- dure at the end of this chapter.

  • Page 74: Track Tension

    Rubber Track Loader 13. Maintenance times, but it should be changed at least once a year. Safety Element Figure 16-9 3. After loosening the jam nut, turn the track ten- Figure 16-7 sioner until the track tension is within specifica- tions.

  • Page 75: Fuse Box

    An identical set of 0.75” (1.9 cm). fittings is located on the right side of the machine. These fitting should be lubricated at least after every 10 hours of operation using Terex Multi Purpose Fuse Box EP Lithium Grease. Figure 16-12 The fuse box is located on the left side of the engine compartment.

  • Page 76: Bleeding The Fuel System

    Rubber Track Loader 13. Maintenance Bleeding the Fuel System The tools required for bleeding the fuel system are listed below. Use manufacturer-recommended tools whenever possible. Table 16-1 Required Tools Combination Wrench If the machine has been run out of fuel, it may be necessary to bleed the fuel system.

  • Page 77: Hydraulic Pressure Check & Adjustment

    14. Hydraulic Pressure Check & Adjustment Chapter Overview Hydraulic Pressure This chapter provides an overview of checking and Adjustment Procedures setting pressures. It is important to contact the manufacturer for assistance before beginning these Adjustment and test procedures are provided for the procedures.

  • Page 78: Auxiliary Pressure Check & Adjustment

    Rubber Track Loader 14. Hydraulic Pressure Check & Adjustment Attach Gauge Figure 14-3 Figure 14-2 Insert the hydraulic gauge into one of the attachment 1. Attach the gauge to the charge pressure test quick couplers. port, located next to the fuel filter. 2.
  • Page 79 Rubber track Loader 14. Hydraulic Pressure Check & Adjustment Jam Nut Adjustment Screw Figure 14-5 4. To adjust the auxiliary pressure, loosen the jam nut and turn the adjustment screw in with an al- len wrench to increase pressure and turn screw out to decrease pressure.

  • Page 81: 15. Troubleshooting

    15. Troubleshooting Chapter Overview Preliminary Inspection This chapter contains basic troubleshooting proce- A simple visual inspection and operational check dures for the Rubber Track Loader. can identify many problems without the need for ex- tensive troubleshooting. If these checks indicate a Additional troubleshooting aids are provided in problem that requires further analysis, proceed to Chapter 3.
  • Page 82 Rubber Track Loader 15. Troubleshooting Troubleshooting Problem 4 Loader operates but tracks will not move. This section identifies selected problems and sug- Probable cause gests probable causes. Leak in feed line to pilot control. Pilot control malfunctioning. Problem 1 Low pilot pressure. Machine will not crank over.
  • Page 83 Rubber Track Loader 15. Troubleshooting Problem 13 Loader will not float; labors engine and has down pressure Problem 10 when detented into float. Probable cause No power to numerous auxiliary functions or accessories in ON or RUN position. Engine RPM too low. Probable cause Low charge pressure.
  • Page 85 Terex Construction Americas 8800 Rostin Road Southaven, MS 38671 (888)-201-6008 (662)-393-1800 www.terex.com...

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