Terex Fuchs MHL380 D User Manual

8 MALFUNCTION
8.8 MHL380 D
Possible cause
Remedy
8.8.7 Loading equipment is not working
1
All travel and work functions are disabled.
Enable travel and work functions
h 5.1.7 Disabling all travel and work functions
2
Armrest switch faulty.
Check the armrest switch and repair or replace
if necessary.
3
Oil supply to hydraulic pump interrupted.
Check the lines.
4
Hydraulic pump has failed.
Have the hydraulic pump checked by a special-
ist, replace complete pump if necessary.
5 Main pressure relief valve has failed or is set
incorrectly.
Have the main pressure relief valve checked by
a specialist, replace complete pump if neces-
sary.
6
Engine temperature above 110°C.
Allow engine to cool
h 4.7 Monitoring the machine during operation
8.8.8 Machine has reduced power
1
Engine has insufficient power.
Check the diesel engine.
2
Hydraulic oil level is too low.
Top up hydraulic oil to mark on sight glass.
3
Pump is taking in air.
Retighten the hose connections. Replace the
O-ring or seals.
4
Working pressure too low.
Have the main pressure relief valve adjusted by
a specialist; replace pump if necessary.
5
Fine mode not set to 0.
Check the load limit sensing control. Check if
fine mode is set to 0; set to 0 if necessary.
8.8.9 Machine is working too slowly and hydraulic fluid is getting hot
1
Main pressure relief valve set too low or
faulty.
Have the main pressure relief valve adjusted by
a specialist; replace pump if necessary.
2
Hydraulic pump has impermissible degree of
wear.
Replace hydraulic pump.
3
Incorrect hydraulic fluid.
Hydraulic fluid must be of the recommended
quality.
4
Hydraulic oil level is too low.
Top up hydraulic oil to mark on sight glass.
5
Oil cooler dirty or faulty.
Clean oil cooler, check and replace if neces-
sary.
6 Air in hydraulic system. Vent the pilot control.
Tighten connections with engine off and system
relieved of pressure.

Terex Fuchs MHL380 D Specifications

General

Brand	Terex
Model	Fuchs MHL380 D
Category	Construction Equipment
Language	English