6 minute read
Troubleshooting
If the action below does not solve the problem or the fault cannot be found, contact Moxy dealer. *= Always contact your Moxy Dealer.
Symptom Cause Action
Engine:
Will not start • Main switch disconnected • Out of fuel • Low battery current • Blown fuse • Defective wiring • Hydrostatic lock • Starter motor defective • Electronic controller or sensors defective • Turn on
Refill fuel, bleed system
Recharge
Check circuit, replace fuse
Check connections, wires
Repair*
Replace*
Check/repair*
Starts but stops again, runs un-evenly or hunts.
Low output • Fuel system disturbance • Condensated water in diesel • Bad fuel quality • Low fuel level • Fuel filters clogged • Air filter clogged • Fuel tank breather clogged • Throttle system disturbance • Wrong injection timing • Injector defective • Turbo charger defective • Worn engine or internal damage • Electronic controller or sensors defective Check fuel lines, bleed system Drain tank Change fuel Refill fuel Replace filters Replace or clean Clean tank cover Adjust/replace/repair Adjust* Repair/replace* Repair/replace* Overhaul* Check/repair*
Overheated (warning light) • Low coolant level • Fan belt problem • Air in cooling system • Dirt inside cooling system • Radiator fins clogged/damaged • Thermostat faulty • Sensor/gauge defective • Coolant pump worn Add coolant, check for leakages Tighten/replace Bleed system Clean and replace coolant Clean Replace Replace Overhaul*
Low coolant temperature • Sensor/gauge defective • Thermostat stuck open Replace Replace
Low oil pressure • Too low oil level • Incorrect oil type • Sensor/gauge defective • Oil pressure red. valve faulty • Worn oil pump Add oil, check for leakage Change to correct oil type Replace Overhaul* Overhaul*
Blue smoke, oil consumed
Black or white smoke • Too high oil level • Incorrect oil type • Worn engine or internal damage Adjust to specified level Change to correct oil type Overhaul*
• Clogged air filter Replace or clean • Fuel pump/injection system worn or faulty Adjust/repair* • Cylinder gasket defective Replace* • Turbocharger defective Repair/replace*
Oil in coolant or coolant in oil • Internal leak in transmission cooler • Worn engine or internal damage • Internal leak on engine oil cooler Replace* Overhaul* Replace*
Knocking noise • Bad fuel quality • Valves incorrectly adjusted • Injection pump incorrectly adjusted • Injector defective • Worn engine or internal damage Change fuel Adjust Adjust* Replace* Overhaul*
Main warning light illuminates • Engine / engine controller failure Stop the dump truck at a safe place and check the error codes on the engine controller.
Following error codes can be read on the engine controller: • Control status lamp lights • Engine controller has detected an internal fault. Check/repair* • Shut down lamp lights • Engine temperature has reached a warning Check/repair* threshold or the sensor has failed.
• Torque limit lamp lights • Air inlet temperature has reached a warning threshold or the sensor has failed. Check/repair*
• Power - lamp lights • Speed potentiometer or idle safety switch has failed. Check/repair*
Main warning light flashes SHUT DOWN CONDITION • Engine / engine controller failure Stop the dump truck at a safe place, check the error codes on the engine controller and stop the engine as soon as possible.
Following error codes can be read on the engine controller: • Control status lamp lights • Engine controller has detected an internal fault. Check/repair* • Shut down lamp lights • Engine temperature has reached a shut down Check/repair* threshold or the sensor has failed.
• Starting lamp lights • Running lamp lights • Boost limit lamp lights
• Power + lamp lights • Engine has exceeded its overspeed threshold. Check/repair* • Actuator feedback sensor failure. Check/repair*
• Engine controller has detected a loss of boost pressure. • Oil pressure has dropped below a threshold level or the sensor has failed. Check/repair*
Check/repair*
Transmission:
Too high temperature
No drive in any gear or only possible to drive in some gears
Low oil pressure • Too low oil level Add oil, check for leakage • Incorrect oil type Change to correct oil type • Cooling circuit failure Check/repair • Lock-up fault Overhaul* • Worn oil pump Overhaul*
• Too low oil level • Blown fuse Add oil, check for leakage Check circuit
• Converter prop. shaft • Electronic controller detect failure, neutral engaged • Electronic controller or sensors defective Replace Check/repair*
Check/repair* • Flywheel damper separated Replace* • Drive line failure Check/repair* • Internal transmission failure Overhaul* • Automatic central lubrication failure Check/repair*
• Too low oil level Add oil, check for leakage • Incorrect oil type Change to correct oil type • Sensor/gauge defective Replace • Pressure control valve failure Check/repair* • Worn oil pump Overhaul* • Internal transmission failure Overhaul/replace*
Noise • Too high oil level • Incorrect oil type in differential(s) • Worn transm. or internal damage Adjust to specified level Change to correct type Overhaul/replace*
Main warning light illuminates • Transmission / transmission controller failure Stop the dump truck at a safe place, select neutral gear position and check the error codes on the gear display.
Following error codes can be read on the gear display: • First digit 1, second digit 1-9 • Digital input signals • First digit 2, second digit 1-9 • Analog input signals • First digit 3, second digit1-9 or A-E • Speed signals
• First digit 5, second digit 1-9 • CAN signal error • First digit 6, second digit 1-9 or A-F • CAN signal error
• First digit 7, second digit 1-9 or A-C • Analog current output signals
• First digit 8, second digit 1-9 • Analog current output signals • First digit 9, second digit 1-9 or A-F • Digital output signals
• First digit A, second digit 1-9 • Digital output signals • First digit B, second digit 1-9 or A-F • Clutch errors
• First digit D, second diget 1-9 • Power supply • First digit E, second digit 1-9 • High speed signals • First digit F, second digit 1-9 • General errors
Brakes:
Poor braking effect or truck pull to one side when braking
Air system:
• Low brake fluid level • Uneven worn brake pads • Air in brake fluid circuit • Insufficient air pressure • A brake caliper is stuck Check/repair* Check/repair* Check/repair*
Check/repair* Check/repair*
Check/repair*
Check/repair* Check/repair*
Check/repair* Check/repair*
Check/repair* Check/repair* Check/repair*
Add fluid, check for leakage Replace pads Bleed brakes Check charging and system Repair*
Low air pressure (all circuits) • System leakage • Governor problem • Compressor failure Check circuits Adjust setting/repair Overhaul*
High air pressure • Governor problem Adjust setting/repair
Hydraulic system:
Emergency steering light on when driving
Truck will not go straight ahead, uneven steering movement or periodically sticking
Not possible to tip or slow tipping
Electrical system:
No electrical power • No oil flow from main pump, or no oil flow from emergencypump
Check and repair* Check and repair* • Oil flow switch defective Replace*
• Low hydraulic oil level Add oil, check for leakage. • Air trapped in hydraulic system Bleed system • Contaminated oil Change oil and flush system • Incorrect oil type Change to correct oil type • Steering cylinders internal leak Overhaul* • Orbitrol or steering valve failure Check and repair*
• Low hydraulic oil level • Clogged oil filter • Insufficient air pressure • Clogged tank strainer or breather • Low oil pressure • Worn oil pump • Tip valve failure Add oil, check for leakage Replace Check charging Replace/clean Check/repair* Check/repair* Overhaul*
• Main switch disconnected • Batteries discharged • Battery terminals/wiring defective Turn on Recharge Repair
Charge warning light on • Fan belt problem • Defective/worn alternator • Defective wiring Tighten/replace Replace Check connections, wires
Chassis:
Uncomfortable travel (jumping)
Vibrations • Defective shock absorber • Defective rubber suspension • Articulation turning ring worn
• Engine or transm. mountings • Fan or flywheel loose/imbalance • Defective elastic coupling • Prop. shaft failure • Drive line problem Replace Replace Overhaul*
Replace Check/repair* Check/repair* Check/repair* Check/repair*
Lubricants
6. Lubricants ................................................................. 123 - 130
Oil specification sheet ...............................................127 Filling capacities ........................................................128 Transmission oil list ...................................................129
