120 W9215-8135-1
06/2021
Troubleshooting
Troubleshooting: Operation
MALFUNCTION POSSIBLE CAUSE REPAIR
Exhaust gas colour very black Air filter restricted Check and clean the air filter
(
page 137).
Insufficient engine power Air filter restricted Check, clean and replace the air fil-
ter (page 137).
Fuel filter restricted or water in fuel
system
Check the water separator for water
content. Drain it (
page 71) and re-
new the fuel filter (page 138), if nec-
essary.
Coolant temperature is too high.
Dirty radiator Clean radiator (page 70).
Low coolant level Check the coolant level, add cool-
ant, if necessary (page 133).
Cooling system components leak-
ing
Check the cooling system for leaks.
Please contact your KUBOTA deal
-
er.
V-belt too loose Check and adjust the V-belt tension
(
page 134).
Charge lamp lights up
V-belt is damaged or very loose Replace and/or tension it
(
page 134).
Fuse in fuse box blown Replace the fuse (page 110).
Deviation in driving direction of ex-
cavator
Crawler tension adjusted incorrectly Check and adjust the crawler ten-
sion, if necessary (page 146).
Power of hydraulic functions is too
low or disruptive
Hydraulic oil level too low Check hydraulic oil level and top up,
if necessary (
page 140).
Suction filter restricted Change the hydraulic oil tank suc-
tion filter. Please contact your
KUBOTA dealer.
Horn and working light do not work Fuse in fuse box blown Replace the fuse (page 110).
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