165 4000662720 E 06.17 USA / EN
F
- Simplified breakdown guide
HA26 RTJ O - HA26 RTJ O SW - HA26 RTJ PRO - HA26 RTJ PRO SW - HA80 RTJ O - HA80 RTJ PRO
3 - Quick checkings on engine
PROBLEM PROBABLE CAUSE SOLUTION
When it is difficult to
start the engine
Fuel is thick and doesn't flow
• Check the fuel tank and fuel filter.
• Remove water, dirt and other impurities.
• As all fuel will be filtered by the filter, if there should be water or
other foreign matters on the filter, clean the filter with kerosene.
Air or water mixed in fuel system
• If air is in the fuel filter or injection lines, the fuel pump will not
work properly.
• To attain proper fuel injection pressure, check carefully for
loosened fuel line coupling, loose cap nut, etc.
• Loosen joint bolt stop fuel filter and air vent screws of fuel
injection pump to eliminate all the air in the fuel system.
Battery is discharged and the engine
will not crank
• Charge battery.
• In winter, always remove battery from machine, charge fully
and keep indoors. Install in machine at time of use.
Engine oil becomes thick in cold
weather and engine cranks slow
• Change grade of oil according to the weather (temperature).
When output is
insufficient
Fuel is insufficient • Check fuel system
Overheating of moving parts
• Check lubricating oil system
• Check to see if lubricating oil filter is working properly.
• Filter element deposited with impurities would cause poor
lubrication. Change element.
When engine suddenly
stops
Lack of fuel
• Check the fuel tank and refill the fuel, if necessary
• Also check the fuel system for air or leaks.
Bad nozzle • If necessary, replace with a new nozzle.
Moving parts are overheated due to
shortage of lubrication oil or improper
lubrication
• Check amount of engine oil with oil level gauge.
• Check lubricating oil system.
• At every 2 times of oil change, oil filter cartridge should be
replaced.
When color of exhaust
is especially bad
Fuel is of extremely poor quality
• Select good quality fuel.
Use no. 2-D diesel fuel only
Nozzle is bad • If necessary, replace with new nozzle.
When engine must be
stopped immediately
Color of exhaust suddenly turns dark
• Check the fuel injection system, especially the fuel injection
nozzle.
Bearing parts are overheated • Check the lubricating system.
Oil lamp lights up during operation
• Check the lubricating system.
• Check the function of the relieve valve in the lubricating system.
• Check pressure switch.
• Check filter base gasket.
When engine
overheats
Engine oil insufficient • Check oil level. Replenish oil as required.
Fan belt broken or elongated • Change belt or adjust belt tension.
Coolant insufficient • Replenish coolant.
Excessive concentration of antifreeze
• Add water only or change to coolant with the specified mixing
ratio.
Radiator net or radiator fin clogged with
dust
• Clean net or fin carefully.
Inside of radiator or coolant flow route
corroded
• Clean or replace radiator and parts.
Fan or radiator or radiator cap defective • Replace defective parts.
Thermostat defective • Check thermostat and replace if necessary.
Temperature gauge or sensor defective • Check temperature with thermometer and replace if necessary.
Overload running • Reduce load.
Head gasket defective or water leakage • Replace parts.
Unsuitable fuel used • Use the specified fuel.
To Next Page
Loading...
