Kubota D1803-CR-E4 Workshop Manual page 190

4. ENGINE
Symptom
The oil pressure is low
The oil pressure is high
The engine is overheated
4-90
Probable cause
The type of oil used is incorrect
The oil pump is damaged
The type of oil used is incorrect
The relief valve is damaged
The engine oil is not sufficient
The fan belt is broken or the fan
belt tension is too loose
The coolant is not sufficient
The radiator net and the radiator
fin are clogged with dust
There is corrosion in the inner
side of the radiator
There is clogged in the coolant
flow route
The radiator or radiator cap is
damaged
The load is too much
The head gasket is damaged
The fuel used is incorrect
D1803-CR-E4,D1803-CR-TE4,D1803-CR-TIE4,V2403-CR-E4,V2403-CR-TE4,V2403-CR-TE4BG,V2403-CR-TIE4
Solution
Use the specified type of oil
Replace
Use the specified type of oil
Repair or replace
Replenish oil to the specified
amount
Replace or adjust
Replenish to the specified
amount
Clean
Clean or replace
Clean or replace
Replace
Reduce the load
Replace
Replace the specified fuel
SERVICING
1. Troubleshooting
Refer-
ence
page
3-1
4-184
4-184
4-185
3-1
－
3-7
3-15
－
－
－
－
4-100
－
4-111
3-1
KiSC issued 12, 2018 A