Jungheinrich DFG 435 Operating Instructions Manual page 112

Fault
Engine
temperature
display in red
zone
Transmission
oil indicator lit
during
operation
Engine
running but
truck does not
travel
Truck does
not reach
max. speed
Lift speed too
low
Excessive
steering play
Malfunction in
the electrical
system
112
Possible Cause
Engine oil level too low Check engine oil level, top up if necessary
Radiator contaminated Clean radiator
Coolant level too low
Fan V belt slipping
Transmission oil level
too low
Radiator contaminated Clean radiator
Travel direction switch
in neutral
Parking brake applied Releasing the parking brake
Transmission oil level
too low
Hydraulic reservoir oil
level too low
Hydraulic reservoir
discharge system
contaminated or
blocked
Air in steering system
Faulty fuse
Action
Check engine radiator system for leaks, add
coolant if necessary
Check V belt tension, tighten or replace as
required
Check transmission oil level, top up if
necessary
Set travel direction switch to required
direction
Check transmission oil level, top up if
necessary
Check hydraulic oil, top up if necessary
Clean / replace hydraulic reservoir discharge
system
Check hydraulic oil level and top up if
necessary, then turn the steering wheel
several times from one end to the other.
Test fuses (see chapter F)