Product Manual

Table Of Contents
185 T4F Kubota User Manual 6: Maintenance
02250216-781 R02
Subject to EAR, ECCN EAR99 and related export control restrictions. 53
High engine tempera-
ture
Faulty engine temperature sensor Check wiring connection to the sensor
Cooling air flow is insufficient
Clean cooler and check for proper ventila-
tion
Loose or broken fan belt Tighten or replace belt
Low engine coolant
Fill with proper water/glycol mixture as
required
Faulty water pump Change pump
Defective engine thermostat Change thermostat element
Engine problems might be present Refer to the Engine Operator’s Manual
Engine will not start
Did not start compressor within the
30 seconds from turning the igni-
tion switch to the ON position
After turning the ignition switch to the ON
position, press the switch to the START
position within 30 seconds
Low battery voltage
Check the battery cables and tighten if nec-
essary
Recharge or replace battery if necessary
No fuel Refuel
Water or dirt in the fuel and/or filter
Drain water from the fuel/water separators
on the fuel filters. Siphon water from the
fuel tank and clean the tank if necessary
Plugged air filter Clean and replace if necessary
Plugged fuel filter Replace the fuel filter
Engine problems
Turn the compressor off. See the Engine
Operator’s Manual for shutdown codes.
Starter solenoid relay does not
engage
Check wiring and tighten all connectors
Replace relay
Poor fuel delivery
No fuel Check fuel level and fill tank if empty
Air in fuel system
Check fuel system for air
Prime fuel system. See Figure 6-4 for loca-
tion of the primer.
Refer to Engine Operator’s Manual
Compressor does not
achieve full discharge
pressure
Run/start switch not in run position
For compressors with idle warm-up con-
trols, switch toggle to RUN for full operation
Air demand is excessive Check service lines for leaks or open valves
Dirty air filter
Check the filter and change the element if
required
Defective pressure regulator
Check the diaphragm and replace with kit if
necessary
Defective idle warm-up control Replace control
Table 6-1: Troubleshooting guide
Symptom Probable cause Remedy