ASV RT-120 R350T Compact Track Loader Complete Service Manual

Description

This ASV RT-120 R350T Compact Track Loader Complete Service Manual is the full workshop guide for technicians and owners who need to maintain, diagnose, and repair these compact track loaders. Covering the RT-120 and R350T models powered by the Cummins QSF3.8 engine, this manual delivers detailed procedures for every major system on the machine. Whether you are performing scheduled maintenance, tracing a hydraulic fault, or rebuilding an undercarriage assembly, this ASV RT-120 R350T service manual provides the specifications and step-by-step instructions required to complete the job accurately.

The document spans 149 pages and covers the complete machine from the engine compartment through the hydraulic drive system, lift arm controls, electrical circuits, and cooling assembly. Circuit diagrams for the hydraulic charge, auxiliary, control, and drive circuits are included, along with relief valve settings, pressure test procedures, and a dedicated troubleshooting chapter. This ASV RT-120 R350T workshop manual is built for real service work, not just reference reading.

File Details

• Manual Type: Complete Service Manual
• Brand: ASV
• Models Covered: RT-120, R350T
• Engine: Cummins QSF3.8
• Language: English
• Page Count: 149
• File Format: PDF
• Document Number: 0404-667
• Region: United States

Chapters Covered

• 1. Product Safety — Safety messages, basic precautions, safety labels, protective equipment, entering and exiting, lifting, hot fluids and components, batteries, pressurized items, repair, attachments, machine labels and decals, product identification number
• 2. Technical Specifications — Engine, transmission, drive pumps, charge pump, drive motors, controls, auxiliary pump, lift arm control valve, oil cooler, critical torque specifications, service tools
• 3. Circuit Diagrams — Hydraulic charge circuit, hydraulic auxiliary circuit, hydraulic control circuit, hydraulic drive circuit, lift arm control valve, hydraulic solenoid blocks, electrical attachment outlet
• 4. Maintenance — Personal safety, lift-arm brace, tilt-up cab, jacking procedure, grease fittings, undercarriages, track tension, drive sprocket rollers, track removal, track installation, air cleaner, water separator, fuel filter, accessory belts, oil level check, engine oil/filter change, hydraulic fluid/filter change, engine coolant change, radiator/oil cooler cleaning, engine cleaning, fuse panel, diesel exhaust fluid, maintenance schedule
• 5. Machine Controls and Instrumentation — Machine controls, lift arm control, drive control, throttle, instrumentation, switches
• 6. Operator Enclosure — Personal safety, machine preparation, removal and installation, lap bar gas spring, dash panel, side panels, pillar harness panel, seat, headliner
• 7. Chassis and Fuel Tank — Personal safety, machine preparation, fuel sending unit, fuel tank, footwell, hood assembly, upper rear frame, forestry guarding
• 8. Cooling Assembly — Personal safety, fan, fan hub, fan motor, fan/support assembly, radiator/oil cooler, fan control block, coolant reservoir
• 9. Hydraulic Reservoir — Personal safety, hydraulic reservoir, suction screen
• 10. Lift Arm/Drive Controls — Personal safety, joystick, lift arm control valve
• 11. Hydraulic Pumps/Motors — Personal safety, charge pump, auxiliary pump, tandem drive pump, drive motor
• 12. Engine — Personal safety, battery, exhaust system, air cleaner, D.E.F. tank, engine
• 13. Undercarriage — Personal safety, 15-inch idler wheel, 10-inch bogie wheel and hub, idler hub, front and rear axles
• 14. Lift Arm Components — Personal safety, lift cylinder, bucket/tilt cylinder, Q/C block PRV
• 15. Quick Attach — Personal safety, locking pin, pivot pin
• 16. Hydraulic Component Service — Personal safety, hydraulic cylinder, lift arm control valve, drive pump (drive relief valves), drive pump (solenoid/spool), auxiliary pump
• 17. Hydraulic Pressure & Flow — Personal safety, contamination inspection, hydraulic tests and troubleshooting, charge pressure check and adjust, auxiliary pressure check and adjust, lift arm pressure check, drive pressure check
• 18. Troubleshooting — Personal safety, visual inspection, general troubleshooting scenarios, engine/machine troubleshooting, control system troubleshooting
• 19. Service Tool — Personal safety, service tool, driver download, service tool download, connecting the service tool, using the service tool
• 20. Lubricant & Fuel Specification — Fluids, fuel specifications
• 21. Service Aids & Supplements — General torque specifications, fitting torque specifications

The table of contents shows the manual’s broad scope: it moves from safety fundamentals through engine and hydraulic specifications into maintenance and removal/installation procedures, then finishes with hydraulic pressure testing, troubleshooting, and service tool guidance. The result is a single reference that supports both scheduled maintenance and complex repair work on the RT-120 and R350T. The ASV RT-120 R350T complete service manual goes beyond surface-level descriptions — it includes actual relief valve settings, torque values, pressure specifications, and procedural steps that a technician can follow directly.

What This Manual Enables You to Do

With this ASV RT-120 R350T repair manual on hand, you can perform a wide range of service tasks without guessing at specifications or procedures. The manual covers track tension adjustment, track removal and installation, sprocket roller replacement, idler wheel and bogie wheel service, and complete hub assembly rebuilds. On the hydraulic side, you can check and adjust charge pressure, auxiliary pressure, lift arm pressure, and drive pressure using the test port locations and relief valve adjustment procedures detailed in Chapter 17. The circuit diagrams in Chapter 3 give you a visual reference for tracing hydraulic flow through the charge, auxiliary, control, and drive circuits, as well as the electrical attachment outlet.

Engine service is covered in Chapter 12, including battery removal, exhaust system service, air cleaner service, D.E.F. tank removal, and complete engine removal and installation. The cooling assembly chapter walks through fan, fan hub, fan motor, radiator/oil cooler, fan control block, and coolant reservoir service. For the operator enclosure, the manual provides removal and installation procedures for the lap bar gas spring, dash panel, side panels, pillar harness panels, seat, and headliner. Each procedure includes required tools, step-by-step instructions, and relevant specifications.

The troubleshooting chapter (Chapter 18) is particularly valuable for diagnosing faults. It includes visual inspection checklists, general troubleshooting scenarios for common problems like hard starting, low power, no start, hydraulic overheating, and engine overheating, plus a detailed control system troubleshooting guide that maps display readings to possible causes and solutions. The service tool chapter explains how to download and use the PLUS+1 service tool for diagnostics, calibration, and software version updates.

Who This Manual Is For

This ASV RT-120 R350T service guide is written for professional technicians, fleet maintenance personnel, and machine owners who perform their own repairs. The procedures assume a working knowledge of mechanical and hydraulic systems, but the step-by-step format and detailed illustrations make even complex tasks manageable. If you are responsible for keeping an RT-120 or R350T running reliably, this manual gives you the same technical information a dealer service department would use.

The manual also includes critical torque specifications for transmission mounting bolts, drive sprocket drive teeth nuts, idler wheel retaining nuts, drive sprocket lug bolts, and drive motor mounting bolts — values you will not find in a generic repair guide. The hydraulic pressure and flow chapter provides the exact pressure ranges for charge pressure, auxiliary standby pressure, low flow and high flow relief pressures, lift arm pressures, and drive pressures, so you can verify system performance against factory specifications.

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This ASV RT-120 R350T Compact Track Loader Complete Service Manual is delivered as an instant PDF download — no shipping, no waiting. You can access it on any device, print the pages you need for the shop, and keep the full manual on hand for reference. Whether you are servicing the Cummins QSF3.8 engine, rebuilding a hydraulic cylinder, replacing undercarriage components, or troubleshooting an electrical fault, this manual provides the procedures and specifications to get it right. Add it to your service library today and stop working without the documentation you need.