Terex TL120 Operating Instructions Manual page 100

8 Trouble-Shooting
Possible cause
Decrease in machine's performance (loader installation)
Insufficient engine power
Hydraulic oil level too low
Pump is sucking up air
Insufficient operating pressure
Pump worn
Incorrect hydraulic oil
Working cylinders are not working satisfactorily
Seals in cylinders worn
Secondary valves faulty
Faults in the electrical system
Outside and/or internal lighting damaged
Windshield wiper not working
Horn not responding
Control organs are imprecise
Starting system does not work satisfactorily
Table 31 Table of faults
100
Remedy
Check diesel engine and adjust if necessary
Top up hydraulic oil to mark on dipstick
Tighten hose connections. Replace O-ring or seals
Re-adjust main pressure relief valve, replace if necessary
Replace pump
Quality of hydraulic oil must conform to our recommendation
Re-seal cylinders
Check secondary valves and replace completely if necessary
Check cables, connections, bulbs and fuses
Check cables, connections, and fuses
Examine windshield wiper for mechanical damage, replace if necessary
Check cables, connections, and fuses
Replace complete horn if required
Determine the fault or source of the problem, call Service Agent if
necessary
Check charge capacity of battery
Test starter function
Check connection and condition of power and battery ground cables
Check function of ignition lock, replace if necessary
Operating Instructions Wheel Loader TL120