14. Troubleshooting

14. Troubleshooting

If the action below does not solve the problem or the fault cannot be found, contact Moxy dealer. *= Always contact your Moxy Dealer.

Area of dump truck Symptom/Problem Cause Remedy/Solution

Dump truck will not start Main switch disconnected Turn on Out of fuel Refi ll fuel, bleed system Low battery current Recharge Blown fuse Check circuit, replace fuse Defective wiring Check connections, wires Hydrostatic lock Repair * Starter motor defective Replace * Electronic controller or sensors defective Check/repair *

Starts but engine cuts out suddenly, runs un-evenly or hunts. Low output Fuel system disturbance Check fuel lines, bleed system Condensated water in diesel Drain tank Bad fuel quality Change fuel Low fuel level Refi ll fuel Fuel fi lters clogged Replace fi lters Air fi lter clogged Replace or clean Fuel tank breather clogged Clean tank cover Throttle system disturbance Adjust/replace/repair Wrong injection timing Adjust * Injector defective Repair/replace * Turbo charger defective Repair/replace * Worn engine or internal damage Overhaul * Electronic controller or sensors defective Check/repair *

Engine

Overheated (Warning light)

Low coolant temperature

Low oil pressure Low coolant level Add coolant, check for leakages Fan belt problem Tighten/replace Air in cooling system Bleed system Dirt inside cooling system Clean and replace coolant Radiator fi ns clogged/damaged Clean Thermostat faulty Replace Sensor/gauge defective Replace Coolant pump worn Overhaul * Sensor/gauge defective Replace Thermostat stuck open Replace Too low oil level Add oil, check for leakage Incorrect oil type Change to correct oil type Sensor/gauge defective Replace Oil pressure red - valve faulty Overhaul * Worn oil pump Overhaul *

Blue smoke, oil consumed

Black or white smoke

Oil in coolant or coolant in oil Too high oil level Adjust to specifi ed level Incorrect oil type Change to correct oil type Worn engine or internal damage Overhaul * Clogged air fi lter Replace or clean Fuel pump/injection system worn or faulty Adjust/repair * Cylinder gasket defective Replace * Turbocharger defective Repair/replace * Internal leak in transmission cooler Replace * Worn engine or internal damage Overhaul * Internal leak on engine oil cooler Replace *

Engine Knocking noise Bad fuel quality Change fuel Valves incorrectly adjusted Adjust Injection pump incorrectly adjusted Adjust * Injector defective Replace * Worn engine or internal damage Overhaul *

Main warning light illuminates Engine/engine controller failure Stop the dump truck at a safe place, check the error codes and contact your moxy dealer.

Too high temperature Too low oil level Add oil, Check for leakage Incorrect oil type Change to correct oil type Cooling circut failure Check/repair Lock-up fault Overhaul * Worrn oil pump Overhaul *

Transmission Will not drive in any gear or only possible to drive in some gears Too low oil level Add oil, check for leakage Blown fuse Check circuit Convertor prop. shaft Replace Electronic controller detection failure, neutral engaged Check/repair * Electronic controller or sensors defective Check/repair * Flywheel damper separated Replace * Drive line failure Check/repair * Internal transmission failure Overhaul * Automatic central lubrication failure Check/repair *

Low oil pressure 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 Adjust to specifi ed Incorrect oil type in differential(s) Change to correct type Worn transmission or internal damage Overhaul/replace *

Transmission/transmission controller Main warning light illuminates

failure Stop the dump truck at a safe place, select neutral gear position and check the error codes on the gear display. (Error codes shown below)

Error code on Transmission Cause Remedy/Solution

First digit 1, second digit 1-9 Digital input signals Check/repair * First digit 2, second digit 1-9 Analog input signals Check/repair * First digit 3, second digit 1-9 or A-E Speed signals Check/repair * First digit 5, second digit 1-9 CAN signal error Check/repair * First digit 6, second digit 1-9 or A-F CAN signal error Check/repair * First digit 7, second digit 1-9 or A-C Analog current output signals Check/repair * First digit 8, second digit 1-9 Analog current output signals Check/repair * First digit 9, second digit 1-9 or A-F Digital output signals Check/repair * First digit A, second digit 1-9 Digital output signals Check/repair * First digit B, second digit 1-9 or A-F Clutch errors Check/repair * First digit D, second digit 1-9 Power supply Check/repair * First digit E, second digit 1-9 High speed signals Check/repair * First digit F, second digit 1-9 General errors Check/repair *

Brakes Poor braking effect or truck pull to one side when braking Low brake fl uid level Add oil, check for leakage Uneven worn brake pads Replace pads Insuffi cient fl uid pressure Check charging and system A brake caliper is stuck Repair *

Emergency steering light is on when driving No oil fl ow from main pump Check and repair * No oil fl ow from emergency pump Check and repair * Oil fl ow switch defective Replace *

Hydraulic system Truck will not go straight ahead, uneven steering movement or periodcally sticking

Not possible to tip or activate slow tipping Low hydraulic pressure Add oil, check for leakage Air trapped in hydraulic system Bleed system Contaminated oil Change oil and fl ush 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 Add oil, check for leakage Clogged oil fi lter replace Insuffi cient hydraulic pressure Check charging Clogged tank strainer or breaher Replace/clean Low oil pressure Check/repair * Worn oil pump Check/repair * Tip valve failure Overhaul *

Electrical system

Chassis No electrical power

Charge warning light on

Uncomfortable travel (jumping)

Vibrations Main switch disconnected Turn on Batteris discharged Recharge Battery terminals/wiring defective Repair Fan belt problem Tighten/replace Defective/worn alternator Replace Defective wiring Check connections, wires Defective shock absorber Replace Defective rubber suspension Replace Articulation turning ring worn Overhaul * Engnine or transmission mountings Replace Fan or fl ywheel loose/imbalance Check/repair * Defective elastic coupling Check/repair * Prop. shaft failure Check/repair * Drive line problem Check/repair *

Lubricants

6. Lubricants ......................................................... 121 - 134 Lubrication schedule (MT25/26/31 Serial Number 710655 and up) .......................... 123 Oil specifi cation sheet (MT25/26/31 Serial Number 710655 and up) .......................... 125 Filling capacities (MT25/26/31 Serial Number 710655 and up) .......................... 126 Oil specifi cation sheet (MT36/41 Serial Number 810053 and up) .......................... 129 Filling capacities (MT36/41 Serial Number 810053 and up) .......................... 130

Transmission oil list ............................................. 131

Automatic Transmission Fluid (ATF) .................. 132