Terex TL120 - User Manual

Questions and Answers

K
Karen ButlerJul 28, 2025
How to fix no steering movement in Terex Compact Loader?
- S
  Sherry MillerJul 28, 2025
  If there is no steering movement in your Terex Compact Loader, it could be due to several reasons: the oil supply to the pump may be interrupted (check and repair the suction line), the hydraulic pump may be damaged (repair or replace), the priority valve may be damaged (call Service Agent to remedy the fault), the steering cylinder may be damaged (Repair or call Service Agent to remedy the fault), or there could be a mechanical fault (repair).
K
Katrina EvansAug 6, 2025
What to do if hydrostatic travel drive of Terex TL120 Compact Loader has no neutral position?
- D
  destinyelliottAug 6, 2025
  If the hydrostatic travel drive of your Terex Compact Loader lacks a neutral position, possible causes include a damaged switch for travel direction (repair or replace), damaged solenoids of the valve (repair or replace), an incorrectly adjusted neutral position (call Service Agent to check and re-calibrate), or internal damage to the travel pump (replace the travel pump).
Y
ynewmanAug 10, 2025
What to do if the hydraulic oil exceeds the maximum admissible temperature in my Terex Compact Loader?
- K
  Kathryn HollandAug 10, 2025
  If the hydraulic oil in your Terex Compact Loader exceeds the maximum admissible temperature, several issues could be the cause. The thermo switch might be damaged (replace it), the oil level could be too low (top up to the mark on the dipstick), or the oil cooler might be dirty or damaged (clean, check, and replace if required). Also check if the suction filter is clogged (replace it), the high-pressure valves are not responding correctly (check, re-adjust, or replace if necessary), the flushing circulation isn't functioning (check pressure, back pressure, and housing pressure), the travel pump or motor is damaged (replace), the loader pump is worn (replace), or the main pressure relief valve is damaged (replace).
J
Jacqueline SmithAug 14, 2025
Why does the transmission in my Terex TL120 Compact Loader only work in one direction?
- J
  josephjacksonAug 14, 2025
  If the transmission in your Terex Compact Loader only works in one direction, the issue might be a damaged switch for travel direction (repair or replace if necessary), a solenoid valve that is stuck or damaged (repair or replace if necessary), an interrupted power supply to the switch or solenoid valve (check and repair, including the ground connection), low pilot pressure on one side (nozzles clogged, check, repair), or a faulty or incorrectly adjusted high-pressure relief valve (swap valves around; if the machine now travels in the other direction, examine, clean, and replace the valve if necessary).
J
jodyvaughnAug 18, 2025
What causes insufficient performance of the service brake in a Terex Compact Loader?
- D
  diazdanielAug 18, 2025
  Insufficient service brake performance in your Terex Compact Loader may be due to wear of the drum brake (call Service Agent to adjust or repair), a damaged master brake cylinder (call Service Agent to repair or replace), or a mechanical fault (call Service Agent to repair).
R
Robin SampsonAug 22, 2025
How to improve the parking brake performance on my Terex TL120?
- A
  Anthony StewartAug 23, 2025
  If your Terex Compact Loader has insufficient parking brake performance, it could be due to wear of the drum brake (adjust or repair) or a mechanical fault in the brake actuation (repair and/or re-adjust).
V
victorharveyOct 31, 2025
Why is my Terex Compact Loader experiencing sluggish acceleration and deceleration with too little propulsive power?
- J
  Joseph CastilloOct 31, 2025
  Sluggish acceleration and deceleration, coupled with too little propulsive power in your Terex Compact Loader, can stem from several causes. There may be insufficient engine power (check the diesel engine), the brake might be stuck (check and remedy the damage), there could be no tank pressurization (check ventilation filters and breathers, replace if needed), or the suction filter might be clogged (replace it). Other potential issues include a non-functioning FAST-SLOW-gear (check power supply and solenoid valve, repair or replace if necessary, and check the travel motor), a fault in the brake-inching device (check, adjust, replace), the charge pump sucking up air (check and eliminate leaks), the travel pump incorrectly adjusted (re-adjust travel pump), insufficient charge or supply press...

Summary

TEREX TL120 Wheel Loader Operating Instructions

Model Identification

Identifies the specific model of the wheel loader.

Safety and Accident Prevention

Proper Use of the Wheel Loader

General Safety Instructions for Operation

Lists essential safety practices for operating the machine.

Safe Machine Operation

Danger Zones and Safety Distances

Defines danger zones and safety distances around the machine.

Prohibition of Passenger Transport

Prohibits carrying people on the machine.

Ensuring Machine Stability

Outlines measures to ensure machine stability and prevent overturning.

Safe Driving Practices

Safe Operation Procedures

Safety Against Falling Objects

Safety measures related to overhead hazards and demolition work.

Safety Near Underground Power Lines

Safety precautions when working near underground power lines.

Safety Near Overhead Power Lines

Safety distances and procedures for working near overhead power lines.

Safe Work Stoppages

Safe Attachment Changes, Maintenance, and Repair

Safety guidelines for changing attachments, maintenance, and repair work.

Recovery, Loading, and Transportation Safety

Procedures for safely recovering, loading, and transporting the machine.

Machine Monitoring and Inspections

Requirements for regular machine inspections and checks.

Fire Prevention Measures

Safety measures related to fire prevention, especially during refueling.

Understanding Residual Dangers

Technical Specifications

Engine Technical Details

Travel Drive System Specifications

Brake System Specifications

Hydraulic System Specifications

Fuels, Lubricants, and Coolants Guide

Fuel, Lubricant, and Coolant Standards

Specifics on fuel, lubricant, and coolant types and standards.

Machine Operation

Operator Controls and Instrument Panel

Identifies and explains the machine's operator controls and displays.

Engine Start-up and Operation

Engine Starting Procedure

Step-by-step guide for starting the engine, including hot start.

Monitoring Machine During Operation

How to monitor engine and machine status during operation.

Engine Shut-down Procedure

Driving, Steering, and Braking Guide

Comprehensive guide to driving, steering, and braking the machine.

Safe Driving Procedures

Detailed instructions for safe driving of the machine.

Steering System Operation

Brake System Operation

Details on service, parking, and brake-inching mechanisms.

Driving on Public Roads

Safety checks and procedures for driving the machine on public roads.

Parking and Shutting Down the Machine

Steps for safely parking and shutting down the machine.

Working Operation

Loader Operation

Instructions for operating the loader function and its components.

Changing Work Attachments

General information on changing work attachments and system requirements.

Assembling Work Attachments

Procedures for mounting attachments with mechanical and hydraulic quick-attach systems.

Machine Working Techniques

Loading Procedures

Recovery, Loading, and Transporting

Machine Recovery Procedures

Instructions for towing and recovering the machine.

Loading with a Crane

Procedures for loading the machine onto transport using a crane.

Machine Transport Guidelines

Guidelines for transporting the machine on trailers or wagons.

Care and Maintenance

Machine Cleaning Procedures

Winter Operation Considerations

Checking, Maintenance, and Inspection Plans

Introduces plans for checking, maintenance, and inspections.

Initial Hand-over Inspection Checklist

Details the initial inspection checklist before machine delivery.

Daily and Weekly Maintenance Tasks

Lists daily and weekly inspection and maintenance jobs for operators.

Lubricating Points Overview

Illustrates and lists all lubrication points on the machine.

Comprehensive Inspection Plan

Comprehensive inspection plan detailing tasks and intervals.

Detailed Inspection and Maintenance Procedures

Detailed procedures for inspection and maintenance tasks.

Engine Oil Checks and Changes

Procedures for checking and changing engine oil.

Engine Oil Filter Replacement

How to replace the engine oil filter.

Cooling System and Oil Cooler Maintenance

Coolant Level Checks

Antifreeze Level Checks

Coolant Change Procedure

Step-by-step guide to changing the coolant.

Fuel System Maintenance

Maintenance procedures for the fuel system.

Fuel Level Checks

Water Separator Draining

Procedure for draining water from the fuel separator.

Fuel Filter Draining

Fuel Filter Replacement

Step-by-step instructions for changing the fuel filter.

Air Filter and Air Intake Maintenance

Maintenance of the air filter and air intake system.

Air Intake Cleaning or Replacement

Safety Air Filter Cartridge Replacement

Main Air Filter Cartridge Change

Step-by-step procedure for changing the main air filter cartridge.

Safety Air Filter Cartridge Change

Step-by-step procedure for changing the safety air filter cartridge.

Double V-Belt Maintenance

V-Belt Condition Checks

V-Belt Tension Checks

Manual V-Belt Tension Check

V-Belt Tensioning Procedure

V-Belt Replacement Procedure

Engine Valve Lash Checks

Brake System Maintenance

Procedures for checking and maintaining brake systems.

Brake Oil Level Check

Brake Oil Change and Bleeding

Steps for changing brake oil and bleeding the brake system.

TL120 S Rear Axle Brake Maintenance

Hydraulic Oil Tank Maintenance

Hydraulic Oil Level Check

Hydraulic Oil Change Procedure

Hydraulic Oil Return Filter Change

Axle Maintenance Procedures

Front Axle Differential Oil Service

Rear Axle and Transmission Oil Service

Wheel and Tire Inspection

Tire Pressure Checks

Wheel Nut Tightness Checks

Electrical Equipment Maintenance

Battery Maintenance and Checks

Battery Removal Procedure

Battery Installation Procedure

Cab Ventilation Dust Filter Maintenance

Removing Cab Ventilation Dust Filter

Installing the Dust Filter

Windshield Washer System Servicing

Immobilization Procedures

Preservation for Temporary Immobilization

Post-Immobilization Procedures

Trouble-Shooting Guide

Engine Problem Diagnosis

Common Faults and Remedies

Lists common faults, their causes, and remedies.

Machine Handover and Operator Instruction Checklist

Operating Instructions Review

Terex TL120 Specifications

General

Brand	Terex
Model	TL120
Category	Compact Loader
Language	English

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