Cooling System
7/21
Z001138-1_2013-02-01
- Result:
Temperature on hose slowly rises simultaneously with
temperature of coolant, but does not reach operating
temperature (80°C opening temperature of thermostat).
- Conclusion:
- Thermostat blocked in partially open or completely open state.
- Sealing ring of thermostat defective.
-
Control:
- Thermostat got stuck in open or closed position.
- Defective thermostat sealing.
- Wrong thermostat for this type of engine.
05.00.04 Check points for problems in cooling system
1. Internal Cooling Circuit
1.1 hoses
- creaked or leaky
1.2 hose clamps
- loose or defective
1.3 thermostat
- thermostat defective
- wrong thermostat
1.4 cooler cap
- defective excess-pressure valve
- defective vacuum valve
- damaged cover sealing
1.5 coolant circulating pump
- defective housing sealing
- damaged roller bearing
- case pump wheel
- defective slide ring seal
1.6 coolant distribution manifold
- leaking connections or seals
1.7 oil cooler
- leaking connections or seals
- damaged hose clamps
Summary of Contents for Marine Engine 2012 Series
Page 35: ...General 35 65 Z001138 1_2013 02 01 Trouble Indication ...
Page 36: ...General Preliminary Service Manual MARINE 2012 Z001138 1_2013 02 01 36 65 ...
Page 51: ...General 51 65 Z001138 1_2013 02 01 G Notes on safety ...
Page 69: ...Engine Z001138 1_2013 02 01 4 87 Kapitel MOUNT BRACKET COVER T BELT GASKET SET ...
Page 154: ...Fuel System Z001138 1_2013 02 01 2 51 ...
Page 159: ...Fuel System 7 51 Z001138 1_2013 02 01 03 00 03 Unit injector ...
Page 190: ...Fuel System Z001138 1_2013 02 01 38 51 Schema Injection Timing Device ITD ...
Page 211: ...Cooling System 5 21 Z001138 1_2013 02 01 ...
Page 231: ...Electrical System Z001138 1_2013 02 01 4 47 ...
Page 235: ...Electrical System Z001138 1_2013 02 01 8 47 ...
Page 236: ...Electrical System 9 47 Z001138 1_2013 02 01 ...
Page 238: ...Electrical System 11 47 Z001138 1_2013 02 01 ...