Hydraulic Oil Exceeds Max. Admissible Temperature; Sluggish Acceleration And Deceleration, Too Little Propulsive Power - Terex TL80 Operating Instructions Manual

8 Troubleshooting
Fault Possible cause

8.7 Hydraulic oil exceeds max. admissible temperature

1 Thermo switch damaged
2 Oil level too low
3 Oil cooler dirty or damaged
4 Suction filter clogged
5 High-pressure valves do not respond all
the time or too early
6 Flushing circulation not functioning
7 Travel pump or travel motor damaged
(wear)
8 Loader pump worn
9 Main pressure relief valve damaged

8.8 Sluggish acceleration and deceleration, too little propulsive power

1 Insufficient engine power
2 Brake has got stuck
3 No tank pressurization
4 Suction filter clogged
5 FAST-SLOW-gear not functioning due to
electric or mechanical fault
6 Fault in operation of brake-inching pedal
7 Charge pump sucking up air
8 Travel pump incorrectly adjusted
9 Insufficient charge or supply pressure
10 Pressure relief valve of charge circuit dirty
or damaged
11 Insufficient high-pressure
12 Travel pump does not open fully, pilot
pressure too low
13 Internal damage to travel pump or travel
motor
14 Travel motor mis-adjusted
98
Remedy
Replace
Top up oil to mark on dipstick
Clean, check and replace if required
Replace
Check high-pressure valves, re-adjust or replace
if necessary
Check pressure of flushing and charge pump,
possible back pressure in cooling circuit, check
housing pressure
Replace
Replace
Replace
Check diesel engine
Check, remedy damage
Check ventilation filters and breathers, replace
Replace filter
Check power supply and solenoid valve, repair
and replace if necessary
Check travel motor
Check, adjust, replace
Check, eliminate leaks
Re-adjust travel pump
Check pressure, adjust
Check, re-adjust or replace
Check high-pressure;
pressure cut-off and high-pressure valves if
required.
Nozzles clogged, check, repair
Replace units
Re-adjust travel motor
re-adjust or replace
TL80