Yanmar 3TNV82A Service Manual page 361

Troubleshooting Charts
Trouble Symptom Starting Problem
Cause
Fouled Blower
Waste Gate Malfunction
Worn Radial Bearing
Excessive Radiator Cooling
Insufficient Radiator Cooling
Insufficient Engine Coolant Level
Cracked Water Jacket
Stretched Fan Belt
Defective Thermostat
TNV DI Service Manual
Poor
Insufficient
Exhaust
Engine Output
Color
Engine Starts
During
But Stops Exhaust Color
Work
Soon.
Exhaust
Smoke
O O
O O
O O
O
O
O
O
O O
Engine Engine
Engine Oil
Surging Coolant
O
O
O
O O O
O
O
Air Intake
Corrective Action
Wash the Blower.
Disassemble and Inspect.
Disassemble and Inspect.
O Replace Thermostat.
Replace Thermostat or Check for Loose
O
Fan Belt.
Check Water Leakage from Engine
O
Coolant System.
Repair or Replace.
O Adjust the Belt Tension.
O Check or Replace.
TROUBLESHOOTING
Reference Page
See Washing Procedure on page 10-12.
See Waste Gate Valve Test on
page 10-14.
See Radial Bearing on page 10-11.
See Disassembly of Engine Coolant
Pump on page 8-10.
See Disassembly of Engine Coolant
Pump on page 8-10 or Check and
Adjust Cooling Fan V-Belt on page 5-21.
See Engine Coolant System Check on
page 8-8.
See Disassembly of Engine Coolant
Pump on page 8-10.
See Check and Adjust Cooling Fan V-
Belt on page 5-21.
See Disassembly of Engine Coolant
Pump on page 8-10.
14-11