Troubleshooting: Operation - Kubota KX91-3a2 Operator's Manual

Troubleshooting

Troubleshooting: operation

Malfunction
Operation
Exhaust gas colour very black
Insufficient engine power
Coolant temperature gauge in the
"H" zone
The Charge message displays
Deviation in driving direction of
excavator
No pilot-controlled hydraulic
functions available
Power of hydraulic functions is too
low or disruptive
Travel speed button does not work
Heater fan, wiper/washer system,
room light, horn, working light not
operating
Possible Cause
Air filter restricted
Air filter restricted
Fuel filter restricted or water in fuel
system
Radiator dirty
Low coolant level
Cooling system components
leaking
V-belt too loose
V-belt too loose
Defective Fuse in alternator circuit
Crawler tension adjusted
incorrectly
Defective fuse in fuse box
Hydraulic oil level too low
Suction filter restricted
Defective fuse in fuse box
Defective fuse in fuse box
Repair
Check and clean the air filter
(page 109).
Check and clean the air filter
(page 109).
Check the water separator for
water content, drain if necessary
(page 54), replace the fuel filter
(page 110).
Clean the radiator (page 105).
Check the coolant level, add
coolant, if necessary (page 104).
Check the cooling system for leaks
(page 108).
Check and adjust the V-belt
tension (page 105).
Check and adjust the V-belt
tension (page 105).
Replace the fuses (page 89).
Check and adjust the crawler
tension, if necessary (page 121).
Replace the fuses (page 89).
Check hydraulic oil level and top
up, if necessary (page 114).
Change the hydraulic oil tank
suction filter (page 113).
Replace the fuses (page 89).
Replace the fuses (page 89).
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