RG27/35/37 Operation • Service • Maintenance
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49
Service
When engine must be stopped immediately
Cause Countermeasures
Engine revolu-
tion suddenly
increases or
decreases
►Check the adjustments, injection timing, and
fuel system.
Unusual sound
is heard sud-
denly
►Check all moving parts carefully..
Color of ex-
haust 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 to see engine bearing clearances are
within factory specs.
►Check the function of the relief valve in the
lubricating system.
►Check the pressure switch.
►Check the filter base gasket.
When engine overheats
Cause Countermeasures
Engine oil
insufficient
►Check oil level. Refill as necessary
Fan belt broken
or elongated
►Change belt or adjust belt tension.
Coolant insuf-
ficient
►Replenish coolant.
Excessive
concentration
of antifreeze
►Add water only or change to coolant with the
specified mixing ratio.
Radiator net
or fin clogged
with dust
►Carefully clean net or fin.
Inside of radia-
tor or coolant
flow route
corroded
►Clean or replace radiator and parts.
Fan, radiator,
or radiator cap
defective
►Replace defective parts.
Thermostat
defective
►Check thermostat and replace if necessary.
temperature
gauge or sen-
sor defective
►Check temperature with thermometer and
replace if necessary.
Overload
running
►Reduce load.
Head gasket
defective or
water leakage
►Replace parts.
Incorrect injec-
tion timing
►Adjust to proper timing.
Unsuitable fuel
used
►Use the specified fuel.
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